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[PMID]:29216619
[Au] Autor:Kirkham K; Munson JM; McCluskey SV; Graner KK
[Ad] Endereço:Mayo Clinic Rochester, Rochester, Minnesota. kirkham.kylian@mayo.edu.
[Ti] Título:Stability of Dalteparin 1,000 Unit/mL in 0.9% Sodium Chloride for Injection in Polypropylene Syringes.
[So] Source:Int J Pharm Compd;21(5):426-429, 2017 Sep-Oct.
[Is] ISSN:1092-4221
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The stability of dalteparin 1,000 units/mL in 0.9% sodium chloride for injection stored in polypropylene syringes under refrigeration was examined. Dalteparin 1,000-units/mL syringes were prepared by adding 9 mL of 0.9% sodium chloride for injection to 1 mL of dalteparin sodium 10,000 unit/mL from commercial single-use syringes. Compounded solutions in 0.5-mL aliquots were transferred to 1-mL polypropylene syringes and sealed with a Luer lock tip cap and stored at refrigerated temperatures (2°C to 8°C) with ambient fluorescent light exposure. Syringes from three batches of dalteparin 1,000 units/mL were potency tested in duplicate by a stability-indicating high-performance liquid chromatography assay using a 0.5-mL sample at specified intervals. Visual and pH testing were performed on each batch. Samples were visually inspected for container integrity, color, and clarity. Samples for pH testing were prepared using a 1:1 dilution of dalteparin 1,000 units/mL in sterile water for injection and underwent duplicate analysis at each time point. High-performance liquid chromatography analyses showed a remaining percent of the initial dalteparin content at day 30 of 94.88% ± 2.11%. Samples remained colorless and clear with no signs of container compromise and no visual particulate matter at each time point. Throughout the 30-day study period, pH values remained within 0.3-pH units from the initial value of 5.84. Dalteparin 1,000 unit/mL in 0.9% sodium chloride for injection, packaged in 1-mL polypropylene syringes was stable for at least 30 days while stored at refrigerated conditions with ambient fluorescent light exposure.
[Mh] Termos MeSH primário: Dalteparina/química
[Mh] Termos MeSH secundário: Cromatografia Líquida de Alta Pressão
Dalteparina/análise
Dalteparina/farmacologia
Estabilidade de Medicamentos
Inibidores do Fator Xa/farmacologia
Concentração de Íons de Hidrogênio
Injeções
Polipropilenos
Cloreto de Sódio
Seringas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Factor Xa Inhibitors); 0 (Polypropylenes); 451W47IQ8X (Sodium Chloride); S79O08V79F (Dalteparin)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171208
[St] Status:MEDLINE


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[PMID]:29224757
[Au] Autor:McIlwain WR; Wistermayer PR; Swiss TP; Marko ST; Ieronimakis NM; Rogers DJ
[Ad] Endereço:Madigan Army Medical Center, United States. Electronic address: wesley.r.mcilwain.mil@mail.mil.
[Ti] Título:Reproducing severe acute subglottic stenosis in a rabbit model.
[So] Source:Int J Pediatr Otorhinolaryngol;103:142-146, 2017 Dec.
[Is] ISSN:1872-8464
[Cp] País de publicação:Ireland
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: The objectives of this study were to develop an animal model with consistent, severe subglottic stenosis (SGS), and to develop the timeline needed for intervention to limit rabbit mortality. METHODS: Subglottic stenosis was created endoscopically using either a nylon or polypropylene brush in sixteen New Zealand White rabbits. The subglottic cross-sectional area was measured endoscopically using a right-angled probe and an open source image analysis software The cross-sectional areas of the stenotic and native airways were compared to calculate the subglottic stenosis percentage and Myer-Cotton grade classification. RESULTS: The average diameter of the native subglottis was 4.7 mm (SD 0.4). The mean subglottic stenosis percentage was 73% (SD 32) for all rabbits. The three rabbits injured with the nylon brush had 30, 52, and 76% stenosis. Nine of the 12 surviving rabbits (75%) injured with the polypropylene brush had a >86% subglottic stenosis. Four rabbits in the polypropylene brush cohort died from procedural complications. CONCLUSION: This study demonstrates a reliable model using a polypropylene brush to create severe acute subglottic stenosis. Cartilage exposure after creating the injury was associated with more severe stenosis. Mortality rate may have been reduced if endoscopic balloon dilation was performed electively seven days after injury, rather than emergently nine days after injury. LEVEL OF EVIDENCE: 4.
[Mh] Termos MeSH primário: Laringoestenose/patologia
Laringe/patologia
[Mh] Termos MeSH secundário: Animais
Cateterismo
Constrição Patológica
Modelos Animais de Doenças
Endoscopia
Seres Humanos
Masculino
Polipropilenos/efeitos adversos
Coelhos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Polypropylenes)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180104
[Lr] Data última revisão:
180104
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171212
[St] Status:MEDLINE


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Alberti, Luiz Ronaldo
Texto completo SciELO Brasil
[PMID]:29236795
[Au] Autor:Garcia DPC; Santos C; Nunes CB; Buzelin MA; Petroianu A; Figueiredo LO; Motta ASD; Gaspar CB; Alberti LR
[Ad] Endereço:PhD, Associate Professor, Department of Surgery, Instituto de Ensino e Pesquisa da Santa Casa, Belo Horizonte-MG, Brazil. Intellectual and scientific content of the study, design the protocol, technical procedures, manuscript writing.
[Ti] Título:Comparative study of intraperitoneal adhesions related to light-weight polypropylene mesh and type I polymerized and purified bovine collagen coated light-weight polypropylene mesh in rabbits.
[So] Source:Acta Cir Bras;32(11):903-912, 2017 Nov.
[Is] ISSN:1678-2674
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To compare the effectiveness of light-weight polypropylene mesh coated with polymerized and purified bovine type I collagen (Surgidry HNB) in the treatment of abdominal wall defect and the degree of adhesion formation. METHODS: Two types of polypropylene mesh were implanted after creation of defect measuring 6.0cm X 5.5cm in the anterior abdominal wall of 32 male New Zealand breed rabbits, divided in two groups (n = 32): (1) light-weigh macroporous polypropylene, (2) type I polymerized and purified bovine collagen coated light-weigh macroporous polypropylene. These animals were further accessed for adhesions, histological evaluation of inflammation and wall's thickness. RESULTS: The percentage of the area adhered in group 1 (62.31 ± 16.6) was higher compared to group 2 (22.19 ± 14.57) (p <0.05). There was an association between the percentage of the covered area by adhesions and the type of adhesion, toughness and the scores obtained by the adhesion score by correlation analysis (p <0.05). There was no difference between the groups in any variables in relation to the degree of inflammation. CONCLUSION: The purified type I bovine collagen coated light-weigh polypropylene mesh showed to be effective in the repair of abdominal wall defects and reducing adhesion formation.
[Mh] Termos MeSH primário: Parede Abdominal/cirurgia
Colágeno Tipo I
Doenças Peritoneais/prevenção & controle
Polipropilenos
Telas Cirúrgicas
[Mh] Termos MeSH secundário: Animais
Bovinos
Distribuição de Qui-Quadrado
Modelos Animais de Doenças
Masculino
Teste de Materiais
Doenças Peritoneais/patologia
Próteses e Implantes
Coelhos
Aderências Teciduais/patologia
Aderências Teciduais/prevenção & controle
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Collagen Type I); 0 (Polypropylenes)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171220
[Lr] Data última revisão:
171220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171214
[St] Status:MEDLINE


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[PMID]:29183531
[Au] Autor:Warren JA; McGrath SP; Hale AL; Ewing JA; Carbonell AM; Cobb WS
[Ti] Título:Patterns of Recurrence and Mechanisms of Failure after Open Ventral Hernia Repair with Mesh.
[So] Source:Am Surg;83(11):1275-1282, 2017 Nov 01.
[Is] ISSN:1555-9823
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Recurrence after ventral hernia repair (VHR) remains a significant complication. We sought to identify the technical aspects of VHR associated with recurrence. Patients who underwent open midline VHR between 2006 and 2013 (n = 261) were retrospectively evaluated. Patients with recurrence (Group 1, n = 48) were compared with those without recurrence (Group 2, n = 213). Smoking, diabetes, and body mass index were not different between groups. More patients in Group 1 underwent clean-contaminated, contaminated, or dirty procedures (43.8 vs 27.7%; P = 0.021). Group 1 had a higher incidence of surgical site occurrence (52.1 vs 32.9%; P = 0.020) and surgical site infection (43.8 vs 15.5%; P < 0.001). Recurrences were due to central mesh failure (CMF) (39.6%), midline recurrence after biologic or bioabsorbable mesh repair (18.8%), superior midline (16.7%), lateral (16.7%), and after mesh explantation (12.5%). Most CMF (78.9%) occurred with light-weight polypropylene (LWPP). Recurrence was higher if the midline fascia was unable to be closed. Recurrence with midweight polypropylene (MWPP) was lower than biologic (P < 0.001), bioabsorbable (P = 0.006), and light-weight polypropylene (P = 0.046) mesh. Fixation, component separation technique, and mesh position were not different between groups. Wound complications are associated with subsequent recurrence, whereas midweight polypropylene is associated with a lower overall risk of recurrence and, specifically, CMF.
[Mh] Termos MeSH primário: Hérnia Ventral/cirurgia
Herniorrafia/métodos
[Mh] Termos MeSH secundário: Implantes Absorvíveis
Falha de Equipamento
Herniorrafia/efeitos adversos
Herniorrafia/instrumentação
Seres Humanos
Meia-Idade
Polipropilenos/uso terapêutico
Recidiva
Estudos Retrospectivos
Fatores de Risco
Telas Cirúrgicas
Infecção da Ferida Cirúrgica/etiologia
Falha de Tratamento
[Pt] Tipo de publicação:COMPARATIVE STUDY; EVALUATION STUDIES; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Polypropylenes)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171204
[Lr] Data última revisão:
171204
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171130
[St] Status:MEDLINE


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[PMID]:28826804
[Au] Autor:Sahoo S; Haskins IN; Huang LC; Krpata DM; Derwin KA; Poulose BK; Rosen MJ
[Ad] Endereço:Department of Biomedical Engineering, Cleveland Clinic Foundation, Cleveland, OH.
[Ti] Título:Early Wound Morbidity after Open Ventral Hernia Repair with Biosynthetic or Polypropylene Mesh.
[So] Source:J Am Coll Surg;225(4):472-480.e1, 2017 Oct.
[Is] ISSN:1879-1190
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Recently introduced slow-resorbing biosynthetic and non-resorbing macroporous polypropylene meshes are being used in hernias with clean-contaminated and contaminated wounds. However, information about the use of biosynthetic meshes and their outcomes compared with polypropylene meshes in clean-contaminated and contaminated cases is lacking. Here we evaluate the use of biosynthetic mesh and polypropylene mesh in elective open ventral hernia repair (OVHR) and investigate differences in early wound morbidity after OVHR within clean-contaminated and contaminated cases. STUDY DESIGN: All elective, OVHR with biosynthetic mesh or uncoated polypropylene mesh from January 2013 through October 2016 were identified within the Americas Hernia Society Quality Collaborative. Association of mesh type with 30-day wound events in clean-contaminated or contaminated wounds was investigated using a 1:3 propensity-matched analysis. RESULTS: Biosynthetic meshes were used in 8.5% (175 of 2,051) of elective OVHR, with the majority (57.1%) used in low-risk or comorbid clean cases. Propensity-matched analysis in clean-contaminated and contaminated cases showed no significant difference between biosynthetic mesh and polypropylene mesh groups for 30-day surgical site occurrences (20.7% vs 16.7%; p = 0.49) or unplanned readmission (13.8% vs 9.8%; p = 0.4). However, surgical site infections (22.4% vs 10.9%; p = 0.03), surgical site occurrences requiring procedural intervention (24.1% vs 13.2%; p = 0.049), and reoperation rates (13.8% vs 4.0%; p = 0.009) were significantly higher in the biosynthetic group. CONCLUSIONS: Biosynthetic mesh appears to have higher rates of 30-day wound morbidity compared with polypropylene mesh in elective OVHR with clean-contaminated or contaminated wounds. Additional post-market analysis is needed to provide evidence defining best mesh choices, location, and surgical technique for repairing contaminated ventral hernias.
[Mh] Termos MeSH primário: Hérnia Ventral/cirurgia
Herniorrafia/efeitos adversos
Herniorrafia/instrumentação
Polipropilenos
Telas Cirúrgicas
Infecção da Ferida Cirúrgica/epidemiologia
[Mh] Termos MeSH secundário: Idoso
Estudos de Coortes
Feminino
Hospitalização
Seres Humanos
Masculino
Meia-Idade
Resultado do Tratamento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Polypropylenes)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171010
[Lr] Data última revisão:
171010
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170823
[St] Status:MEDLINE


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[PMID]:28690179
[Au] Autor:Zhong Z; Yao X; Gao X; Jia L
[Ad] Endereço:Ministry of Education Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China.
[Ti] Título:Polydopamine-immobilized polypropylene microfuge tube as a pH-responsive platform for capture/release of DNA from foodborne pathogens.
[So] Source:Anal Biochem;534:14-18, 2017 Oct 01.
[Is] ISSN:1096-0309
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:A rapid, convenient and efficient DNA extraction method with no need for toxic agents and centrifugation was reported. A polypropylene microfuge (MF) tube was used as the substrate to immobilize polydopamine (PDA). The prepared PDA-coated MF (PDA@MF) tube was used as a pH-responsive platform for rapid extraction of DNA based on pH-induced charge switch of amino and phenolic hydroxyl groups in PDA coating. The extraction procedure is simple and can be finished in 25 min. The PDA@MF tube was applied for extraction of genomic DNA from foodborne pathogens in milk. The extracted DNA was directly used as template for PCR amplification.
[Mh] Termos MeSH primário: DNA Bacteriano/isolamento & purificação
Escherichia coli O157/genética
Staphylococcus aureus/genética
[Mh] Termos MeSH secundário: DNA Bacteriano/genética
Concentração de Íons de Hidrogênio
Indóis
Reação em Cadeia da Polimerase
Polímeros
Polipropilenos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Bacterial); 0 (Indoles); 0 (Polymers); 0 (Polypropylenes); 0 (polydopamine)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170821
[Lr] Data última revisão:
170821
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170711
[St] Status:MEDLINE


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[PMID]:28689141
[Au] Autor:Azizi K; Keshavarz Moraveji M; Abedini Najafabadi H
[Ad] Endereço:Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Avenue, Tehran 1591634311, Iran.
[Ti] Título:Characteristics and kinetics study of simultaneous pyrolysis of microalgae Chlorella vulgaris, wood and polypropylene through TGA.
[So] Source:Bioresour Technol;243:481-491, 2017 Nov.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Thermal decomposition behavior and kinetics of microalgae Chlorella vulgaris, wood and polypropylene were investigated using thermogravimetric analysis (TGA). Experiments were carried out at heating rates of 10, 20 and 40°C/min from ambient temperature to 600°C. The results show that pyrolysis process of C. vulgaris and wood can be divided into three stages while pyrolysis of polypropylene occurs almost totally in one step. It is shown that wood can delay the pyrolysis of microalgae while microalgae can accelerate the pyrolysis of wood. The existence of polymer during the pyrolysis of microalgae or wood will lead to two divided groups of peaks in DTG curve of mixtures. The results showed that interaction is inhibitive rather than synergistic during the decomposition process of materials. Kinetics of process is studied by the Kissinger-Akahira-Sunose (KAS) and Flynn-Wall-Ozawa (FWO). The average E values obtained from FWO and KAS methods were 131.228 and 142.678kJ/mol, respectively.
[Mh] Termos MeSH primário: Chlorella vulgaris
Polipropilenos
Madeira
[Mh] Termos MeSH secundário: Cinética
Microalgas
Termogravimetria
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Polypropylenes)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171023
[Lr] Data última revisão:
171023
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170710
[St] Status:MEDLINE


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[PMID]:28631901
[Au] Autor:Filimonov VB; Vasin RV; Vasina IV; Kaprin AD; Kostin AA
[Ad] Endereço:Department of Surgery and Obstetrics-Gynecology, FPE of Ryazan SMU of Minzdrav of Russia, Ryazan.
[Ti] Título:[Female genital prolapse surgery using ultra lightweight polypropylene mesh].
[So] Source:Urologiia;(2):14-23, 2017 Jun.
[Is] ISSN:1728-2985
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:AIM: To compare the results of female genital prolapse (FGP) surgery via vaginal access using lightweight and ultra-lightweight polypropylene mesh. MATERIALS AND METHODS: From 2007 to 2011, 93 women aged from 46 to 71 years with II-IV stage FGP (POP-Q classification) were examined and underwent the vaginal extra-peritoneal colpopexy using polypropylene implants in the Department of Urology. Patients were divided into 2 groups. In patients of group 1 (n=50) the surgery was performed according to a newly developed technique using perforated ultra-lightweight (surface density 19 g/m2) domestically manufactured polypropylene implant. In group 2, a standard trocar set with light (surface density of 42.7 g/m2) foreign-made polypropylene implants was used. RESULTS AND DISCUSSION: Long-term follow-up was from 1 to 5 years. General surgical complications (urinary bladder injury, blood loss over 300 ml, perineal and vaginal hematomas) were detected in 2 (4%) patients of group 1 and in 7 (16.3%) patients of group 2. The most common specific mesh-related complication was the vaginal wall erosion, which was observed in 4 (9.3%) patients of group 2 and in 1 (2%) patient of group 1. FGP recurrence was diagnosed in 5 (10%) patients of group 1 in the non-treated part and in 8 (18.6%) patients of group 2. Three patients (7%) in group 2 developed recurrent cystocele due to the shrinkage of the mesh implant which was not observed in group 1. At 12 month follow-up, the results of FGP surgical treatment were estimated as good (full functional recovery and no FGP recurrence) in 41 (82%) and 32 (74.4%) patients of groups 1 and 2, respectively. CONCLUSION: We have developed a method of vaginal extra-peritoneal colpopexy using a perforated ultra-lightweight polypropylene implant. This technique has resulted in the absence of recurrence in the treated part of FGP, and 4.1, 4.2 and 4.7 fold reductions in the incidence of general surgical complications, vaginal wall erosions and perineal and vaginal hematomas, respectively, compared with FGP patients undergoing the placement of the lightweight polypropylene implant using the standard trocar set.
[Mh] Termos MeSH primário: Prolapso de Órgão Pélvico/cirurgia
Polipropilenos
Telas Cirúrgicas
Procedimentos Cirúrgicos Urogenitais
[Mh] Termos MeSH secundário: Idoso
Idoso de 80 Anos ou mais
Feminino
Seres Humanos
Meia-Idade
Resultado do Tratamento
Vagina/cirurgia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (Polypropylenes)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171103
[Lr] Data última revisão:
171103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170621
[St] Status:MEDLINE


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[PMID]:28598983
[Au] Autor:Ulrich D; Le Teuff I; Huberlant S; Carteron P; Letouzey V; de Tayrac R
[Ad] Endereço:Medical University Nimes, 4 Rue du Professeur Robert Debré, Nîmes, France.
[Ti] Título:A preclinical evaluation of polypropylene/polylacticacid hybrid meshes for fascial defect repair using a rat abdominal hernia model.
[So] Source:PLoS One;12(6):e0179246, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: Synthetic mesh surgery for both abdominal and urogenital hernia repair is often unsatisfactory in the long-term due to postoperative complications. We hypothesized that a semi-degradable mesh hybrid may provide more appropriate biocompatibility with comparable mechanical properties. The aim was to compare its in vivo biocompatibility with a commercial polypropylene (PP) mesh. METHODS: 72 rats were randomly allocated to either our new composite mesh (monofilament PP mesh knitted with polylactic-acid-fibers (PLA)) or to a commercially available PP mesh that was used as a control. 15, 90, and 180 days after implantation into the rat abdomen mesh tissue complexes were analysed for erosion, contraction, foreign body reaction, tissue integration and biomechanical properties. RESULTS: No differences were seen in regard to clinical parameters including erosion, contraction or infection rates between the two groups. Biomechanical properties including breaking load, stiffness and deformation did not show any significant differences between the different materials at any timepoint. Macrophage staining did not reveal any significant differences between the two groups or between timepoints either. In regard to collagen I there was significantly less collagen I in the PP group compared to the PP/ PLA group at day 180. Collagen III did not show any significant differences at any timepoint between the two groups. CONCLUSION: A PP/PLA hybrid mesh, leaving a low amount of PP after PLA degradation seems to have comparable biomechanical properties like PP at 180 days due to enhanced collagen production without significant differences in erosion, contraction, herniation or infection rates.
[Mh] Termos MeSH primário: Fáscia/patologia
Poliésteres
Polipropilenos
Telas Cirúrgicas
[Mh] Termos MeSH secundário: Animais
Materiais Biocompatíveis
Fenômenos Biomecânicos
Colágeno/metabolismo
Feminino
Hérnia Abdominal/cirurgia
Implantes Experimentais
Masculino
Teste de Materiais
Complicações Pós-Operatórias
Ratos
Resultado do Tratamento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biocompatible Materials); 0 (Polyesters); 0 (Polypropylenes); 459TN2L5F5 (poly(lactide)); 9007-34-5 (Collagen)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170926
[Lr] Data última revisão:
170926
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170610
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0179246


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[PMID]:28570885
[Au] Autor:Duan D; Wang Y; Dai L; Ruan R; Zhao Y; Fan L; Tayier M; Liu Y
[Ad] Endereço:Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China.
[Ti] Título:Ex-situ catalytic co-pyrolysis of lignin and polypropylene to upgrade bio-oil quality by microwave heating.
[So] Source:Bioresour Technol;241:207-213, 2017 Oct.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Microwave-assisted fast co-pyrolysis of lignin and polypropylene for bio-oil production was conducted using the ex-situ catalysis technology. Effects of catalytic temperature, feedstock/catalyst ratio, and lignin/polypropylene ratio on product distribution and chemical components of bio-oil were investigated. The catalytic temperature of 250°C was the most conducive to bio-oil production in terms of the yield. The bio-oil yield decreased with the addition of catalyst during ex-situ catalytic co-pyrolysis. When the feedstock/catalyst ratio was 2:1, the minimum char and coke values were 21.22% and 1.54%, respectively. The proportion of cycloalkanes decreased and the aromatics increased with the increasing catalyst loading. A positive synergistic effect was observed between lignin and polypropylene. The char yield dramatically deceased and the bio-oil yield improved during co-pyrolysis compared with those during lignin pyrolysis alone. The proportion of oxygenates dramatically and the minimum value of 6.74% was obtained when the lignin/polypropylene ratio was 1:1.
[Mh] Termos MeSH primário: Biocombustíveis
Polipropilenos
[Mh] Termos MeSH secundário: Calefação
Lignina
Micro-Ondas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biofuels); 0 (Polypropylenes); 9005-53-2 (Lignin)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171106
[Lr] Data última revisão:
171106
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170602
[St] Status:MEDLINE



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