采用分子量为1500的聚乙二醇(PEG 1500)、多元醇醚化2D 树脂(LF-2)及催化剂 MgCl2.6 H 2 O 制备湿致形状记忆织物.以织物浸水尺寸收缩率及干态形变回复率对湿致形状记忆性能进行表征,利用傅立叶-红外光谱仪、SEM 对湿致形状记忆织物的 FT-IR 光谱及纤维表面形态分析,并对湿致形状记忆机理进行探讨分析.研究结果表明,PEG1500与纤维及树脂间形成了—C—O—C—化学交联,织物在浸水-烘干循环中浸水尺寸收缩率可达12％,干态形变回复率可达80％,有较好的湿致形状记忆性能；织物拉伸弹性及甲醛含量降低的同时,其抗起毛起球效果及吸湿性得到改善.
Wet-driven shape memory fabrics were prepared with polyethylene glycol (PEG1 500),polyhydric al-cohol etherified 2D resin(LF-2 )and MgCl2 . 6 H 2 O.The wet-driven shape memory effect was measured by shrinkage rate in wet state and shrinkage recovery rate in dry state.The morphology and FT-IR spectrum of wet-driven shape memory fabrics were characterized by scanning electron microscope and FT-IR spectrograph and the mechanism of wet-driven shape memory effect was analyzed.The results show that —C—O—C—chemical cross-linking was formed between PEG1 500,fibers and resin.In wet-dry cycles,the shrinkage rate of fabrics in wet state is up to 12% and the shrinkage recovery rate of fabrics in dry state is up to 80%.The elastic-ity and the formaldehyde content of the fabrics were decreased,while the pilling resistance and hygroscopic properties were significantly improved.
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