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Miscibility, Crystallization, and Rheological Behavior of Solution Casting Poly(3-hydroxybutyrate)/poly(ethylene succinate) Blends Probed by Differential Scanning Calorimetry, Rheology, and Optical Microscope Techniques
Wei-hua Sun,Xiao-ping Qiao,Qi-kun Cao,Jie-ping Liu*
Author NameAffiliationE-mail
Wei-hua Sun School of Chemistry and Materials Science, Huaibei Coal Teachers' College, Huaibei 235000, China  
Xiao-ping Qiao School of Chemistry and Materials Science, Huaibei Coal Teachers' College, Huaibei 235000, China  
Qi-kun Cao School of Chemistry and Materials Science, Huaibei Coal Teachers' College, Huaibei 235000, China  
Jie-ping Liu* School of Chemistry and Materials Science, Huaibei Coal Teachers' College, Huaibei 235000, China jpliu@hbcnc.edu.cn 
Abstract:
The miscibility and crystallization of solution casting biodegradable poly(3-hydroxybuty- rate)/poly(ethylene succinate) (PHB/PES) blends was investigated by differential scanning calorimetry, rheology, and optical microscopy. The blends showed two glass transition temperatures and a depression of melting temperature of PHB with compositions in phase diagram, which indicated that the blend was partially miscible. The morphology observation supported this result. It was found that the PHB and PES can crystallize simultaneously or upon stepwise depending on the crystallization temperatures and compositions. The spherulite growth rate of PHB increased with increasing of PES content. The influence of compositions on the spherulitic growth rate for the partially miscible polymer blends was discussed.
Key words:  Miscibility, Poly(3-hydroxybutyrate)/poly(ethylene succinate) blend, Phase behavior, Crystallization
FundProject:
Miscibility, Crystallization, and Rheological Behavior of Solution Casting Poly(3-hydroxybutyrate)/poly(ethylene succinate) Blends Probed by Differential Scanning Calorimetry, Rheology, and Optical Microscope Techniques
孙伟华,乔晓平,曹启坤,刘结平*
摘要:
应用差示扫描量热、流变及偏光显微镜等方法研究了聚3-羟基丁酸酯/聚丁二酸乙二醇酯(PHB/PES)共混体系的相容性、结晶和流变行为.相图显示该共混体系有两个玻璃化转变,但PHB的熔点随其含量的减少而降低,这个结果证明该共混体系是部分相容的,同时应用偏光显微镜观察体系结晶形态的发展证实了这个结论.依赖于结晶温度和组成,PHB和PES能同时结晶,也能分步结晶,且PHB的球晶生长速率随PES含量的增加而增大.对于部分相容的聚合物共混体系,共混组成对球晶生长速率的影响也做了详细地讨论.
关键词:  相容性,相图,结晶,聚3-羟基丁酸酯/聚丁二酸乙二醇酯共混体系
DOI:10.1088/1674-0068/23/01/107-112
分类号: