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PAM/CS/GO水凝胶的制备及其吸湿行为

吴银秋 傅涛 高洪鑫 曹峥 成骏峰 刘春林 陶国良 吴盾

吴银秋, 傅涛, 高洪鑫, 曹峥, 成骏峰, 刘春林, 陶国良, 吴盾. PAM/CS/GO水凝胶的制备及其吸湿行为[J]. 功能高分子学报. doi: 10.14133/j.cnki.1008-9357.20201221001
引用本文: 吴银秋, 傅涛, 高洪鑫, 曹峥, 成骏峰, 刘春林, 陶国良, 吴盾. PAM/CS/GO水凝胶的制备及其吸湿行为[J]. 功能高分子学报. doi: 10.14133/j.cnki.1008-9357.20201221001
WU Yinqiu, FU Tao, GAO Hongxin, CAO Zheng, CHENG Junfeng, LIU Chunlin, TAO Guoliang, WU Dun. Preparation and Moisture Absorption Behavior of PAM/CS/GO Hydrogels[J]. Journal of Functional Polymers. doi: 10.14133/j.cnki.1008-9357.20201221001
Citation: WU Yinqiu, FU Tao, GAO Hongxin, CAO Zheng, CHENG Junfeng, LIU Chunlin, TAO Guoliang, WU Dun. Preparation and Moisture Absorption Behavior of PAM/CS/GO Hydrogels[J]. Journal of Functional Polymers. doi: 10.14133/j.cnki.1008-9357.20201221001

PAM/CS/GO水凝胶的制备及其吸湿行为

doi: 10.14133/j.cnki.1008-9357.20201221001
基金项目: 国家自然科学基金(21704008);江苏省自然科学基金面上项目(BK20201449);江苏省研究生实践创新项目(KYCX20_2532)
详细信息
    作者简介:

    吴银秋(1995—),女,福建福鼎人,硕士生,研究方向为功能高分子材料。E-mail:1030190474@qq.com

    通讯作者:

    曹 峥,E-mai:zcao@cczu.edu.cn

  • 中图分类号: O63

Preparation and Moisture Absorption Behavior of PAM/CS/GO Hydrogels

  • 摘要: 以丙烯酰胺(AM)为单体,壳聚糖(CS)与氧化石墨烯(GO)为功能组分,N, N'-亚甲基双丙烯酰胺(MBA)为交联剂,通过自由基聚合法制备PAM/CS/GO水凝胶。采用傅里叶变换红外(FT-IR)光谱、X射线粉末衍射(XRD)仪、扫描电镜(SEM)和万能试验机对水凝胶的结构与性能进行测试与表征。利用石英晶体微天平(QCM)研究该水凝胶薄膜在不同湿度条件下的吸湿行为。实验结果表明:相对于PAM/CS水凝胶,PAM/CS/GO水凝胶的力学性能得到显著提升,最大断裂伸长率为2 039%,最大断裂应力达到237 kPa;随着空气相对湿度从33%增加到85%,水凝胶薄膜修饰的QCM湿度传感器频率响应变化从12.2 Hz增大到22.3 Hz。

     

  • 图  1  PAM/CS/GO水凝胶修饰的QCM传感器的制备以及吸湿过程

    Figure  1.  Preparation and moisture absorption process of PAM/CS/GO hydrogel modified QCM sensor

    图  2  样品的红外光谱图

    Figure  2.  FT-IR spectra of samples

    图  3  样品的X射线衍射谱图

    Figure  3.  XRD patterns of samples

    图  4  GO的(a)AFM与(b)TEM图

    Figure  4.  (a) AFM and (b) TEM images of GO

    图  5  水凝胶的(a,c)扫描电镜图及(b,d)孔径分布图

    Figure  5.  (a, c) SEM images and (b, d) pore size distribution of hydrogels

    a, b—PAM/CS hydrogel; c. d—PAM/CS/GO-2.0% hydrogel

    图  6  水凝胶的应力-应变曲线

    Figure  6.  Stress-strain curves of hydrogels

    图  7  PAM/CS/GO水凝胶修饰的QCM传感器在33%RH条件下的(a)Δf与(b)ΔΓ曲线;QCM传感器在(c)不同相对湿度下Δf曲线以及(d)吸附平衡时的Δfn=3)

    Figure  7.  (a) Δf and (b) ΔΓ curves of the PAM/CS/GO hydrogel modified QCM sensor at 33% RH; (c) Δf curves of the QCM sensor with different relative humidities and (d) Δf at adsorption balance

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出版历程
  • 收稿日期:  2020-12-21
  • 网络出版日期:  2021-02-24

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