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首页> 外文期刊>Journal of Polymers and the Environment >Biodegradation Properties of Poly-ε-caprolactone, Starch and Cellulose Acetate Butyrate Composites
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Biodegradation Properties of Poly-ε-caprolactone, Starch and Cellulose Acetate Butyrate Composites

机译：聚ε-己内酯，淀粉和醋酸丁酸纤维素复合材料的生物降解性能

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摘要

Blending starches with polymers such as poly-ε-caprolactone (PCL) has been used as a route to biodegradable plastics. The addition of starch has a significant effect on all physical properties including toughness, elongation at break. On blending cellulose acetate butyrate (CAB) with starch and PCL, improvements in most physical and mechanical properties were observed. This is may be due to CAB acts as a compatibilizer between PCL and starch due to the presence of both hydroxyl groups (in starch and CAB) and ester carbonyls (in PCL and CAB). The presence of different compounds affects the way in which other components degrade. For example the structure of CAB within a starch and PCL combination might make the degradation rate different to that when starch was only mixed with PCL. To check whether this was the case, three combinations of different blends were used to calculate the rate of degradation of each of them separately. These degradation rate constants were then used to predict the theoretical degradation which was checked against the experimental value for other different combinations.
机译：将淀粉与聚合物（例如聚-ε-己内酯（PCL））共混已用作生产可生物降解塑料的途径。淀粉的添加对包括韧性，断裂伸长率在内的所有物理性能具有显着影响。将乙酸丁酸纤维素（CAB）与淀粉和PCL混合后，观察到大多数物理和机械性能均得到改善。这可能是由于同时存在羟基（在淀粉和CAB中）和酯羰基（在PCL和CAB中）导致CAB充当PCL和淀粉之间的增容剂。不同化合物的存在会影响其他组分降解的方式。例如，淀粉和PCL组合中CAB的结构可能使降解率不同于仅将淀粉与PCL混合时的降解率。为了检查是否存在这种情况，使用了不同掺合物的三种组合来分别计算它们各自的降解率。然后将这些降解速率常数用于预测理论降解，将其与其他不同组合的实验值进行对照。

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