کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5190914 | 1381220 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The starch grafted poly(l-lactide) and the physical properties of its blending composites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A new method of the surface modified starch (SM-St) by grafting reaction of the hydroxyl groups on the starch with l-lactic acid was developed. A novel biodegradable starch grafted copolymer, starch-g-poly(l-lactide) (St-g-PLLA), was synthesized in situ by the ring-opening graft polymerization of a l-lactide (LLA) monomer onto the surface of the SM-St granules in the presence of Sn(Oct)2 as a catalyst. The PLLA grafting efficiency could reach as high as 64Â wt%. The structure of St-g-PLLA was characterized by IR, DSC and WAXD. The good adhesion between the two components had been evidenced by SEM observations. The medium-resistance of St-g-PLLA and the mechanical properties of the PLLA composite blending with St-g-PLLA were much better than that of the PLLA/starch blending composite.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 46, Issue 15, 11 July 2005, Pages 5723-5729
Journal: Polymer - Volume 46, Issue 15, 11 July 2005, Pages 5723-5729
نویسندگان
Li Chen, Xueyu Qiu, Mingxiao Deng, Zhongkui Hong, Rui Luo, Xuesi Chen, Xiabin Jing,