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卡拉胶/聚(N-异丙基丙烯酰胺)基热致变色凝胶的构建与应用

刘洋 林振辉 陶涛 苗庆显 李建国

刘洋, 林振辉, 陶涛, 等. 卡拉胶/聚(N-异丙基丙烯酰胺)基热致变色凝胶的构建与应用[J]. 复合材料学报, 2022, 39(0): 1-7
引用本文: 刘洋, 林振辉, 陶涛, 等. 卡拉胶/聚(N-异丙基丙烯酰胺)基热致变色凝胶的构建与应用[J]. 复合材料学报, 2022, 39(0): 1-7
Yang LIU, Zhenhui LIN, Tao TAO, Qingxian MIAO, Jianguo LI. Construction and application of carrageenan/poly(N-isopropylacrylamide)-based thermochromic gel[J]. Acta Materiae Compositae Sinica.
Citation: Yang LIU, Zhenhui LIN, Tao TAO, Qingxian MIAO, Jianguo LI. Construction and application of carrageenan/poly(N-isopropylacrylamide)-based thermochromic gel[J]. Acta Materiae Compositae Sinica.

卡拉胶/聚(N-异丙基丙烯酰胺)基热致变色凝胶的构建与应用

基金项目: 国家自然科学基金 (31770633;31971612),国家重点研发计划(2019YFC1905903)
详细信息
    通讯作者:

    苗庆显,博士,副教授,硕士生导师,研究方向为植物资源化学与新材料 E-mail: miaoqingxian@163.com

    李建国,博士,副教授,硕士生导师,研究方向为高性能纤维素纤维制备及其应用 E-mail: jianguolicn@fafu.edu.cn

  • 中图分类号: TB332

Construction and application of carrageenan/poly(N-isopropylacrylamide)-based thermochromic gel

  • 摘要: 刺激变色材料的动态透明-不透明转变行为使其具有太阳光调制能力,可以降低建筑物的能源消耗。然而,这些材料通常涉及高生产成本、操作复杂性以及额外电能消耗等问题。在此,通过分散聚(N-异丙基丙烯酰胺)(PNIPAM)凝胶微球到卡拉胶(KCA)基质中,制备一种低成本且具有优异太阳光调制能力和高稳定性的复合凝胶(KCA/PNIPAM)。其中,KCA具有多孔的3D网络结构,可以有效管控PNIPAM微球,实现PNIPAM在凝胶体系中的均匀分散,并能够抑制PNIPAM微球的团聚沉降行为。KCA/PNIPAM凝胶展示出优异的太阳光调制能力(ΔT=86%),在暴露到氙灯和太阳光照射中,KCA/PNIPAM智能窗较普通玻璃窗可分别降低温度5℃和4℃。总之,KCA/PNIPAM具有响应温度低(31.7℃)、太阳光调制能力优异、稳定性持久、成本低以及制造简单等优点,使之能够成为节能建筑材料的潜在候选者。

     

  • 图  1  图.1 聚(N-异丙基丙烯酰胺)(PNIPAM) (a)、卡拉胶(KCA) (b)和KCA/PNIPAM (c)的形貌图;(d) NIPAM、PNIPAM、KCA和KCA/PNIPAM的红外图谱

    Figure  1.  Morphology of poly(N-isopropylacrylamide) (PNIPAM) (a), carrageenan (KCA) (b) and KCA/PNIPAM(c);(d) FTIR spectra of NIPAM, PNIPAM, KCA and KCA/PNIPAM

    图  2  图.2 (a) KCA/PNIPAM的DSC曲线;(b) KCA/PNIPAM的透光率-温度曲线

    Figure  2.  (a) DSC curve of the pristine KCA/PNIPAM; (b) Curve of dynamic transmittance vs. temperature of KCA/PNIPAM

    图  3  (a) 室内氙灯照射模拟;(b) 室外太阳照射模拟

    Figure  3.  (a) Indoor xenon lamp simulation; (b) Outdoor simulation under the sun

    图  4  图.4 KCA/PNIPAM(a)和PNIPAM水分散液(b)的稳定性;(c)PNIPAM的在不同状态时的粒径分布

    Figure  4.  Stability of KCA/PNIPAM (a) and PNIPAM water dispersion (b); (c) The particle size distribution of PNIPAM in different states

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出版历程
  • 收稿日期:  2021-10-20
  • 录用日期:  2021-12-17
  • 修回日期:  2021-11-25
  • 网络出版日期:  2022-01-11

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