双网络水凝胶纤维的增韧机理和纺丝工艺研究

项目名称： 双网络水凝胶纤维的增韧机理和纺丝工艺研究

项目编号： No.51373146

项目类型： 面上项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 费宾

作者单位： 香港理工大学深圳研究院

项目金额： 78万元

中文摘要： 本项目拟以双网络水凝胶为基本结构模型，应用可控共聚物合成，纳米复合，及多种交联方法相结合的系统设计，实现在水凝胶膜材料中的多尺度结构调控，进行高分子凝胶体系的增韧研究。然后将上述优化的凝胶体系进行湿法纺丝，通过适当调整凝固浴条件和后处理方法，可以获得几种高韧性的水凝胶纤维。本试验中申请者将系统地研究高分子链结构及其分子量，凝胶体系组成，交联种类，以及纳米填料种类对产生的网络拓扑结构和凝胶材料力学性能的影响，并综合考虑凝胶体系的稳定性，环境响应性和可纺性。预期通过控制纺织工艺参数，灵活应用后处理交联方法，来获得高韧性的，可长期使用的，适于机织或针织加工的水凝胶纤维，为功能纺织品的设计提供新的材料。

中文关键词： 水凝胶纤维;增韧机理;网络结构;交联方式;纳米复合材料

英文摘要： This proposal uses a double-network hydrogel as a principle structure model. In the planned research, a system design will be fulfilled by combination of controlled copolymer synthesis, nano-material incorporation, and versatile crosslinking methods, to adjust multi-scale structures in hydrogel membranes, to deeply explore the toughening mechanism of polymer hydrogel systems. The hydrogel systems optimized above will be further converted into fibers by wet-spinning, through finely varying condensing baths and post treatments. In this way, a few hygrogel fibers of high toughness can be obtained. The applicant will systematically study the effects of polymer chain structures and molecular weights, hydrogel component contents, crosslink and nano-additive types, by monitoring the network structures and mechanical properties of hydrogels. The stability, responsiveness to stimuli, and spinability of hydrogel systems will also be observed. We expect to prepare highly tough hydrogel fibers that can be durable and processible with versatile weaving or knitting techniques, by well tunning the wet-spinning parameters and crosslinking post-treatments. These fibers will support the design of many novel functional textiles.

英文关键词： hydrogel fiber;toughening mechanism;network structure;crosslink chemistry;nano composite