Recyclable Shape-Memory Polymer: Poly(lactic acid) Crosslinked By a Thermoreversible Diels-Alder Reaction

被引:83
作者
Inoue, Kazuhiko [1 ]
Yamashiro, Midori [1 ]
Iji, Masatoshi [1 ]
机构
[1] NEC Corp Ltd, Nanoelect Res Labs, Tsukuba, Ibaraki 3058501, Japan
关键词
Diels-Alder polymers; recycling; renewable resources; structure-property relations; LINKING;
D O I
10.1002/app.29469
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
An intelligent shape-memory polymer was made through the synthesis of poly(lactic acid) macromonomers with furanyl groups and crosslinking with linkers with maleimidyl groups. The thermoreversible covalent bonds formed by the Diels-Alder reaction between these groups made this polymer recyclable (i.e., environmentally friendly). The structure of the polymer was also studied. A defect of the structure, a dissociated moiety of the thermoreversible bonding, was strongly affected by the reaction conditions and was investigated with UV spectroscopy, which was used to monitor the concentration of the maleimidyl groups. The relation between the flexibility of the linker and the strength and inner stress of the polymer was also evaluated. Reducing the number of defects and relaxing the inner stress were found to increase the strength of the shape-memory polymer. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 112: 876-885, 2009
引用
收藏
页码:876 / 885
页数:10
相关论文
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