Pub Date : 2002-12-21DOI: 10.1002/3527600035.BPOL3B05
H. Abe, Y. Doi
Introduction and Historical Outline Structure and Properties of PHAs Poly[(R)-3-hydroxybutyrate] Homopolymer Copolymers of (R)-3-hydroxybutyrate with Hydroxyalkanoates Poly[(R)-3-hydroxybutyrate]-based Polymer Blends Medium-chain-length Poly[(R)-3-hydroxyalkanoates] Biodegradability of PHAs Environmental Degradability of PHA Materials Enzymatic Degradability of PHA Materials Outlook and Perspectives Keywords: thermal properties; mechanical properties; biodegradability; molecular weight; chemical structure of monomer unit; copolymerization; copolymer composition; solid-state structure of materials; lamellar thickness; degree of crystallinity; polymer blend; phase structure; cross-linking; introduction of functional group; PHB depolymerase; substrate specificity of catalytic domain; binding specificity of substrate-binding domain
Pub Date : 2002-12-21DOI: 10.1002/3527600035.BPOL3B12
A. Duda, S. Penczek
Introduction Historical Outline Polyesterification Thermodynamics of Polyesterification Kinetics of Polyesterification Molar Mass Distribution in Polyesterfication Cyclization in Polyesterification ROP of Cyclic Esters Thermodynamics of Cyclic Ester Polymerization Kinetics and Mechanisms of Cyclic Ester Polymerization Chain Transfer via Transesterification Stereochemistry of Lactide Polymerization Outlook and Perspectives Keywords: active centers; aggregation of active centers; aggregation of initiators; aliphatic cyclic esters; aliphatic polyesters; aluminum alkoxides; anionic polymerization; covalent (pseudoanionic) polymerization; ɛ-caprolactone; controlled polymerization; cyclization; kinetics of ring-opening polymerization; kinetics of polyesterification; l,l-dilactide; lactide(s); lactone(s); ɛ-caprolactone; living polymerization; MALDI-TOF; mechanism of ring-opening polymerization; metal alkoxides; 27Al-NMR; polycondensation; polyesterification; poly(ɛ-caprolactone); poly(l-lactide); rate constants of propagation; stereochemistry of lactides polymerization; stereocomplexes; thermodynamics of ring-opening polymerization; tin alkoxides; tin octoate
Pub Date : 2002-12-21DOI: 10.1002/3527600035.BPOL3B04
Y. Tokiwa, H. Pranamuda
Introduction Distribution of Microorganisms Able to Degrade Four Representative Aliphatic Polyesters Degrading Microorganisms at Ambient Temperature (30 °C) Degrading Microorganisms at High Temperature (50 °C) Polyester Degrading Ability of Reference Cultures from Type Culture Collections Microbial Degradation of Poly(ethylene adipate) (PEA) PEA degradation by Penicillium sp. 14-3 PEA-degrading Enzyme Produced by Penicillium sp. 14-3 Hydrolysis of Aliphatic Polyesters by Commercial Lipases Aspects Affecting the Degradability of Polyesters by Rhizopus Lipase Microbial Degradation of PCL Microbial Degradation of PHB Microbial Degradation of PPL Microbial Degradation of PBS, PES, and PBS/A Microbial Degradation of PLA Micobial Degradation of Polycarbonate, Polyester Carbonate, Poly(ether-ester), and Copolyester Polycarbonate and Polyester Carbonate Poly(p-dioxanone) (PPDO) Poly(2-methylene-1,3,6-trioxocane) Aliphatic–Aromatic Copolyester Outlook and Perspectives Keywords: aliphatic polyester; microbial degradation
{"title":"Biodegradation of Aliphatic Polyesters","authors":"Y. Tokiwa, H. Pranamuda","doi":"10.1002/3527600035.BPOL3B04","DOIUrl":"https://doi.org/10.1002/3527600035.BPOL3B04","url":null,"abstract":"Introduction \u0000Distribution of Microorganisms Able to Degrade Four Representative Aliphatic Polyesters \u0000Degrading Microorganisms at Ambient Temperature (30 °C) \u0000Degrading Microorganisms at High Temperature (50 °C) \u0000Polyester Degrading Ability of Reference Cultures from Type Culture Collections \u0000 \u0000 \u0000Microbial Degradation of Poly(ethylene adipate) (PEA) \u0000PEA degradation by Penicillium sp. 14-3 \u0000PEA-degrading Enzyme Produced by Penicillium sp. 14-3 \u0000Hydrolysis of Aliphatic Polyesters by Commercial Lipases \u0000Aspects Affecting the Degradability of Polyesters by Rhizopus Lipase \u0000 \u0000 \u0000Microbial Degradation of PCL \u0000Microbial Degradation of PHB \u0000Microbial Degradation of PPL \u0000Microbial Degradation of PBS, PES, and PBS/A \u0000Microbial Degradation of PLA \u0000Micobial Degradation of Polycarbonate, Polyester Carbonate, Poly(ether-ester), and Copolyester \u0000Polycarbonate and Polyester Carbonate \u0000Poly(p-dioxanone) (PPDO) \u0000Poly(2-methylene-1,3,6-trioxocane) \u0000Aliphatic–Aromatic Copolyester \u0000 \u0000 \u0000Outlook and Perspectives \u0000 \u0000 \u0000Keywords: \u0000 \u0000aliphatic polyester; \u0000microbial degradation","PeriodicalId":165163,"journal":{"name":"Biopolymers Online","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123760155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-12-21DOI: 10.1002/3527600035.BPOL3B07
R. Marchessault, Ga-er Yu
Introduction Historical Outline General Use Properties Optical Rotation of PHAs Crystalline Unit Cell and Conformation of Bacterial Poly(3HB) and Poly(3HV) Crystalline Structure of Syndiotactic Poly(3HB) Crystalline Conformation of Poly(4-hydroxybutyrate) Crystalline Structure and Properties of MCL-PHA Folded Chain Lamellar Single Crystals Splintering of Poly(3HB) Single Crystals by Depolymerases Molecular Chirality and Polymer Morphology Kinetics of Crystallization of PHA Thermal Degradation Crystalline Structure of Poly(3HB) Oligomers Dependence of Lamellar Thickness and Tm on the Molecular Weight of Poly(3HB) Chemical Degradation of Lamellar Poly(3HB) Crystals Outlook and Perspectives Acknowledgements Keywords: polyhydroxyalkanoates; bacterial; thermoplastics; elastomerics; biodegradable; optical activity; crystallization; lamella; folded chain; conformation; polyester; biopolyester; splintering; isodimorphism; depolymerase; chirality; morphology; thermal degradation; biocompatible; tissue culture; drug delivery
{"title":"Crystallization and Material Properties of Polyhydroxyalkanoates PHAs)","authors":"R. Marchessault, Ga-er Yu","doi":"10.1002/3527600035.BPOL3B07","DOIUrl":"https://doi.org/10.1002/3527600035.BPOL3B07","url":null,"abstract":"Introduction \u0000Historical Outline \u0000General Use Properties \u0000Optical Rotation of PHAs \u0000Crystalline Unit Cell and Conformation of Bacterial Poly(3HB) and Poly(3HV) \u0000Crystalline Structure of Syndiotactic Poly(3HB) \u0000Crystalline Conformation of Poly(4-hydroxybutyrate) \u0000Crystalline Structure and Properties of MCL-PHA \u0000Folded Chain Lamellar Single Crystals \u0000Splintering of Poly(3HB) Single Crystals by Depolymerases \u0000Molecular Chirality and Polymer Morphology \u0000Kinetics of Crystallization of PHA \u0000Thermal Degradation \u0000Crystalline Structure of Poly(3HB) Oligomers \u0000Dependence of Lamellar Thickness and Tm on the Molecular Weight of Poly(3HB) \u0000Chemical Degradation of Lamellar Poly(3HB) Crystals \u0000Outlook and Perspectives \u0000Acknowledgements \u0000 \u0000 \u0000Keywords: \u0000 \u0000polyhydroxyalkanoates; \u0000bacterial; \u0000thermoplastics; \u0000elastomerics; \u0000biodegradable; \u0000optical activity; \u0000crystallization; \u0000lamella; \u0000folded chain; \u0000conformation; \u0000polyester; \u0000biopolyester; \u0000splintering; \u0000isodimorphism; \u0000depolymerase; \u0000chirality; \u0000morphology; \u0000thermal degradation; \u0000biocompatible; \u0000tissue culture; \u0000drug delivery","PeriodicalId":165163,"journal":{"name":"Biopolymers Online","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132925191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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