The effect of processing on the properties of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymers

被引:7
作者
Chambers, R [1 ]
Daly, JH [1 ]
Hayward, D [1 ]
Liggat, JJ [1 ]
机构
[1] Univ Strathclyde, Dept Pure & Appl Chem, Glasgow G1 1XL, Lanark, Scotland
基金
英国工程与自然科学研究理事会;
关键词
D O I
10.1023/A:1017938203630
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Semi-crystalline poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymers are biodegradable systems with potential as substrates for use in tissue regeneration. Previous studies have shown that severe embrittlement occurs on storage at room temperature restricting their application possibilities. Concepts such as secondary, advancing crystallisation causing changes in the amorphous/crystalline ratio have been mooted as the cause of the embrittlement. Using films prepared by extrusion and compression moulding procedures we have attempted to probe not only the pure amorphous and crystalline phases but also the interfacial region. Interpretation of dynamic mechanical and dielectric data highlights the changes in the nature of the interfacial region on processing. Moreover, the use of the Thermally Stimulated Discharge technique is a powerful probe for highlighting the morphological changes induced in multiphase systems by the processing step. (C) 2001 Kluwer Academic Publishers.
引用
收藏
页码:3785 / 3792
页数:8
相关论文
共 28 条
[1]  
[Anonymous], J POLYM SCI C, DOI [10.1002/polc.5070140111, DOI 10.1002/POLC.5070140111]
[2]  
BAKR AA, 1977, EUR POLYM J, V13, P799
[3]  
BERTICAT P, 1976, MAKROMOL CHEM, V177, P1583
[4]  
Biddlestone F, 1996, POLYM INT, V39, P221
[5]   Dispersion and absorption in dielectrics I. Alternating current characteristics [J].
Cole, KS ;
Cole, RH .
JOURNAL OF CHEMICAL PHYSICS, 1941, 9 (04) :341-351
[6]   THE DIELECTRIC-PROPERTIES OF POLYCARBONATE STYRENE ACRYLONITRILE COPOLYMER MULTILAYER COMPOSITES .2. THE MAXWELL-WAGNER-SILLARS PROCESS [J].
DALY, JH ;
GUEST, MJ ;
HAYWARD, D ;
PETHRICK, RA .
JOURNAL OF MATERIALS SCIENCE LETTERS, 1992, 11 (19) :1271-1273
[7]   USE OF THERMALLY STIMULATED DISCHARGE MEASUREMENTS FOR THE INVESTIGATION OF CURE AND CHARACTERIZATION OF THERMOSET-EPOXY RESINS SYSTEMS [J].
DALY, JH ;
JEFFREY, K ;
HAYWARD, D ;
PETRICK, RA ;
WILFORD, P .
JOURNAL OF MATERIALS SCIENCE, 1993, 28 (08) :2028-2034
[8]   MORPHOLOGICAL-CHANGES IN POLYETHYLENE FILMS INDUCED BY PROCESSING - A DYNAMIC MECHANICAL STUDY [J].
DALY, JH .
EUROPEAN POLYMER JOURNAL, 1990, 26 (08) :933-936
[9]  
DALY JH, 1991, J MATER SCI LETT, V10, P441
[10]   CRYSTALLIZATION PHENOMENA IN BACTERIAL POLY[(R)-3-HYDROXYBUTYRATE] .3. TOUGHENING VIA TEXTURE CHANGES [J].
DEKONING, GJM ;
SCHEEREN, AHC ;
LEMSTRA, PJ ;
PEETERS, M ;
REYNAERS, H .
POLYMER, 1994, 35 (21) :4598-4605