The Shape Memory Properties of Biodegradable Chitosan/Poly(L-lactide) Composites

被引：37
|
作者：
Meng, Qinghao [1 ]
Hu, Jinlian [1 ]
Ho, KaiChiu [2 ]
Ji, Fenglong [1 ]
Chen, Shaojun [1 ]
机构：
[1] Hong Kong Polytech Univ, Inst Text & Clothing, Kowloon, Hong Kong, Peoples R China
[2] Hong Kong Res Inst Text & Apparel, Kowloon, Hong Kong, Peoples R China
来源：
JOURNAL OF POLYMERS AND THE ENVIRONMENT | 2009年 / 17卷 / 03期
关键词：
Shape memory property; Poly(L-lactide); Chitosan; WATER-VAPOR PERMEABILITY; MASS-TRANSFER PROPERTIES; POLYLACTIDE/LAYERED SILICATE NANOCOMPOSITES; SEGMENTED POLYURETHANE MEMBRANE; MELTING BEHAVIOR; STRUCTURAL-CHARACTERIZATION; HOLDING CONDITIONS; BARRIER PROPERTIES; POLY(LACTIC ACID); POLYMER NETWORKS;
D O I：
10.1007/s10924-009-0141-z
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The shape memory behavior of PLLA (poly (L-lactide)) and chitosan/PLLA composites was studied. PLLA and chitosan were compounded to fabricate novel materials which may have biodegradability and biocompatibility. Chitosan does not significantly affect the glass and melting transition temperature of the PLLA. Both the pure PLLA and chitosan/PLLA composites showed shape memory effect arising from the viscoelastic properties of PLLA comprised of semi crystalline structures. The shape recovery ratio of the chitosan/PLLA composites decreased significantly with increasing chitosan contents due to the incompatibility between PLLA and chitosan. Phase separation structures of the composites were observed by using atomic force microscopy. To obtain good shape memory effect, the chitosan content should be below 15 wt%.
引用
收藏
页码：212 / 224
页数：13
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