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首页> 外文期刊>Journal of Polymer Research >Physical properties and biodegradation of acrylic acid grafted poly(ε-caprolactone)/chitosan blends
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Physical properties and biodegradation of acrylic acid grafted poly(ε-caprolactone)/chitosan blends

机译：丙烯酸接枝的聚（ε-己内酯）/壳聚糖共混物的物理性质和生物降解

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摘要

We blended films of acrylic acid grafted polycaprolactone (PCLgAA) and citosan (CS) with different compositions from aqueous acetic acid solution. DSC measurements showed that the melting temperatures and enthalpies of the blends decreased with increasing CS content. From FTIR results, we observe that the amino groups of CS form covalent bonds with the carboxylic groups of PCLgAA in addition to hydrogen bonds between the constituents in the blends. Though the crystal structure of the PCLgAA component was not changed, as proved by WAXD results, blending CS suppressed the crystallinity of the blends. Furthermore, the ductility of CS was increased during tensile testing in PCLgAA/CS blends due to enhanced affinity between the two components. However, PCLgAA/CS blends show greater resistance than PCL/CS blends to biodegradation in an enzymatic environment.
机译：我们将丙烯酸接枝的聚己内酯（PCLgAA）和壳聚糖（CS）的膜与来自乙酸水溶液的不同成分混合在一起。 DSC测量表明，共混物的熔融温度和焓随CS含量的增加而降低。从FTIR结果，我们观察到CS的氨基与PCLgAA的羧基形成共价键，除了在混合物中各组分之间存在氢键。虽然WALD结果证明，PCLgAA组分的晶体结构没有改变，但共混CS抑制了共混物的结晶度。此外，由于在PCLgAA / CS混合物中进行拉伸测试时，CS的延展性有所提高，这是由于两种组分之间的亲和力增强。但是，在酶促环境中，PCLgAA / CS混合物比PCL / CS混合物具有更高的抗生物降解性。

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