The starch grafted poly(L-lactide) and the physical properties of its blending composites

被引:123
作者
Chen, L
Qiu, XY
Deng, MX
Hong, ZK
Luo, R
Chen, XS [1 ]
Jing, XB
机构
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
[3] NE Normal Univ, Dept Chem, Changchun 130022, Peoples R China
基金
中国国家自然科学基金;
关键词
starch; surface modification; grafting polymerization;
D O I
10.1016/j.polymer.2005.05.053
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
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 64 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. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:5723 / 5729
页数:7
相关论文
共 23 条
[21]   Aliphatic polyester-grafted starch composites by in situ ring opening polymerization [J].
Rutot, D ;
Degée, P ;
Narayan, R ;
Dubois, P .
COMPOSITE INTERFACES, 2000, 7 (03) :215-225
[22]   PROPERTIES OF BLENDS OF STARCH AND SYNTHETIC-POLYMERS CONTAINING ANHYDRIDE GROUPS [J].
VAIDYA, UR ;
BHATTACHARYA, M .
JOURNAL OF APPLIED POLYMER SCIENCE, 1994, 52 (05) :617-628
[23]   Syntheses of PVA/starch grafted hydrogels by irradiation [J].
Zhai, ML ;
Yoshii, F ;
Kume, T ;
Hashim, K .
CARBOHYDRATE POLYMERS, 2002, 50 (03) :295-303