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首页> 外文期刊>Journal of Materials Research >Responsiveness, swelling, and mechanical properties of PNIPA nanocomposite hydrogels reinforced by nanocellulose
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Responsiveness, swelling, and mechanical properties of PNIPA nanocomposite hydrogels reinforced by nanocellulose

机译：纳米纤维素增强PNIPA纳米复合水凝胶的响应性，溶胀性和机械性能

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摘要

Nanocrystalline cellulose (NCC) whisker obtained from acid hydrolysis of cotton was incorporated into the freezing polymerized PNIPA/clay hydrogels to prepare inorganic-organic hybrid nanocomposite hydrogels (named as C-NC gels). The influence of NCC on the properties of C-NC gels was investigated systematically. It was found that all C-NC gels exhibit similar lower critical solution temperature as that of NCC-free gels, being independent of the NCC content. However, with the increase of NCC content in C-NC gels, the swelling ability of gels decreases slightly while the response rate of gels increases gradually, the gels with high content of NCC exhibit an ultrarapid deswelling rate due to the amount of interconnected micropores appeared inside the gels. Moreover, the enhancement effect of increased NCC on the gels is significant, which is also determined by the swelling degree of gels directly. Comparably, for the gels with the same content of NCC, higher strength was found when the gels were kept in lower swelling ratio due to the stronger interaction of NCC through hydrogen bond in the gels.
机译：将由棉酸水解得到的纳米晶纤维素晶须掺入冷冻聚合的PNIPA /粘土水凝胶中，以制备无机-有机杂化纳米复合水凝胶（称为C-NC凝胶）。系统地研究了NCC对C-NC凝胶性能的影响。已发现，所有C-NC凝胶均显示出与无NCC凝胶相似的较低临界溶液温度，而与NCC含量无关。然而，随着C-NC凝胶中NCC含量的增加，凝胶的溶胀能力略有下降，而凝胶的响应率却逐渐提高，NCC含量高的凝胶由于出现了相互连接的微孔数量而显示出超快的溶胀率。里面的凝胶。而且，增加的NCC对凝胶的增强作用是显着的，这也直接由凝胶的溶胀度决定。相比之下，对于具有相同NCC含量的凝胶，由于NCC通过凝胶中的氢键具有更强的相互作用，因此当以较低的溶胀率保持凝胶时，发现具有更高的强度。

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  • 来源
    《Journal of Materials Research》 |2015年第11期|1797-1807|共11页
  • 作者

    Yi Chen; Weijian Xu; Wenyong Liu; Guangsheng Zeng;

  • 作者单位

    Key Laboratory of Advanced Materials and Technology for Packaging, Packaging and Materials Engineering Institute, Hunan University of Technology, Zhuzhou 412008, China and Institute of Polymer Research, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;

    Department of Chemical Engineering and Technology, Institute of Polymer Research, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;

    Key Laboratory of Advanced Materials and Technology for Packaging, Packaging and Materials Engineering Institute, Hunan University of Technology, Zhuzhou 412008, China;

    Key Laboratory of Advanced Materials and Technology for Packaging, Packaging and Materials Engineering Institute, Hunan University of Technology, Zhuzhou 412008, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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