کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5206365 1382305 2013 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Material propertiesBiodegradation study of plasticised corn flour/poly(butylene succinate-co-butylene adipate) blends
ترجمه فارسی عنوان
خواص مواد خواص بیولوژیکی آرد ذرت پلاستیکی / پت (بوتیلن ساکیناتا- کوبییلن آدیپات) مخلوط
کلمات کلیدی
آرد ذرت حرارتی، پلی اتیلن (بوتیلن سوکسینات - کوبییلن آدیپات)، مخلوط کردن مرفولوژی، تجزیه زیستی،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی

Plasticised corn flour/poly(butylene succinate-co-butylene adipate) (PBSA) materials were prepared by extrusion and injection in order to study the impact of PBSA ratio on their physicochemical properties and biodegradability. Scanning electron microscopy observations showed that corn flour and PBSA are incompatible. Three types of morphology have been observed: (i) starch dispersed in a PBSA matrix, (ii) a “co-continuous-like” morphology of starch and PBSA, and (iii) PBSA dispersed in a starch matrix. As expected, the extent of plasticised corn flour starch hydrolysis by amylolytic enzymes decreased when the amount of PBSA increased. Addition of a lipase to hydrolyse PBSA ester bonds enhanced enzymatic hydrolysis of starch by amylolytic enzymes in materials where PBSA formed a continuous phase. This suggests that PBSA formed a barrier restricting the access of amylolytic enzymes to starch. This was consistent with aerobic and anaerobic biodegradation assays, which also showed lower biodegradability of materials containing a majority of PBSA.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 32, Issue 8, December 2013, Pages 1565-1575
نویسندگان
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