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Robust hydrogel of regenerated cellulose by chemical crosslinking coupled with polyacrylamide network

机译：通过化学交联耦合聚丙烯酰胺网络的鲁棒水凝胶

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摘要

Regenerated cellulose/polyacrylamide (RC/PAAm) double network (DN) hydrogels are composed of cellulose crosslinked by epichlorohydrin (ECH) and chemical-crosslinked PAAm. The prepared RC/PAAm DN hydrogels present enhanced strength, good shape recovery property, excellent energy dissipation properties, decreased equilibrium water content, and low equilibrium swelling ratio (SR). The compressive strength and modulus of RC/PAAm hydrogel are about 4.3 and 11.5 times compared to that of RC hydrogel, respectively. Intriguingly, the chemical crosslinking between ECH and cellulose chains could increase the distance between cellulose chains. Consequently, the increasing molar ratio of ECH to glucose leads to larger SRs and decreased mechanical strength of the hydrogels. Additionally, higher PAAm contents lead to more densely crosslinked networks, and thus decreasing the SRs and improving the mechanical strength of the hydrogels. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47811.
机译：再生纤维素/聚丙烯酰胺（RC / PAAM）双网络（DN）水凝胶由通过表氯醇（ECH）和化学交联的PAAM交联的纤维素组成。制备的Rc / Paam DN水凝胶具有增强的强度，良好的形状回收性能，优异的能量耗散性能，降低的平衡含水量和低平衡溶胀比（SR）。与RC水凝胶的抗压强度和rC / Paam水凝胶的模量分别为约4.3和11.5倍。有趣的是，ECH和纤维素链之间的化学交联可以增加纤维素链之间的距离。因此，随着葡萄糖的摩尔比的增加导致较大的Srs和水凝胶的机械强度降低。另外，较高PAAM内容物导致更密集地交联网络，从而降低Srs并提高水凝胶的机械强度。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47811。

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  • 来源
    《Journal of Applied Polymer Science》 |2019年第30期|共10页
  • 作者

    Yang Biao; Hua Wen-Qiang; Li Lei; Zhou Zi-Han; Xu Ling; Bian Feng-Gang; Ji Xu; Zhong Gan-Ji; Li Zhong-Ming;

  • 作者单位

    Sichuan Univ State Key Lab Polymer Mat Engn Coll Polymer Sci &

    Engn Chengdu 610065 Sichuan Peoples R China;

    Chinese Acad Sci Shanghai Inst Appl Phys Shanghai Synchrotron Radiat Facil Shanghai 201204 Peoples R China;

    Sichuan Univ State Key Lab Polymer Mat Engn Coll Polymer Sci &

    Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ State Key Lab Polymer Mat Engn Coll Polymer Sci &

    Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ State Key Lab Polymer Mat Engn Coll Polymer Sci &

    Engn Chengdu 610065 Sichuan Peoples R China;

    Chinese Acad Sci Shanghai Inst Appl Phys Shanghai Synchrotron Radiat Facil Shanghai 201204 Peoples R China;

    Sichuan Univ Coll Chem Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ State Key Lab Polymer Mat Engn Coll Polymer Sci &

    Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ State Key Lab Polymer Mat Engn Coll Polymer Sci &

    Engn Chengdu 610065 Sichuan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;
  • 关键词

    double network hydrogel; mechanical properties; polyacrylamide; regenerated cellulose; swelling behavior;

    机译：双网络水凝胶;机械性能;聚丙烯酰胺;再生纤维素;肿胀行为;

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