纺织学报 ›› 2021, Vol. 42 ›› Issue (09): 17-23.doi: 10.13475/j.fzxb.20210201708

• 特约专栏:智能纤维与制品 • 上一篇    下一篇

聚N-异丙基丙烯酰胺/聚氨酯梯度复合膜的温敏亲-疏水性及透湿性

杨群1,2,3(), 梁琦1, 王黎明1, 代正伟3   

  1. 1.上海工程技术大学 纺织服装学院, 上海 201620
    2.上海纺织化学清洁生产工程技术研究中心, 上海 201620
    3.浙江省纱线材料成形与复合加工技术研究重点实验室, 浙江 嘉兴 314001
  • 收稿日期:2021-02-05 修回日期:2021-06-06 出版日期:2021-09-15 发布日期:2021-09-27
  • 作者简介:杨群(1981—),女,副教授,博士。主要研究方向为功能与智能纺织材料及膜材料的设计与应用。E-mail: yangqun@sues.edu.cn。
  • 基金资助:
    浙江省自然科学基金青年基金项目(LQ18E030006);上海工程技术大学科研启动项目(0239-E3-0507-19-05165);浙江省纱线材料成形与复合加工技术研究重点实验室开放基金项目(MTC-2020-23)

Thermo-sensitive hydrophilic-hydrophobic transition and moisture permeability of poly-N-isopropylacrylamide/polyurethane gradient composite membrane

YANG Qun1,2,3(), LIANG Qi1, WANG Liming1, DAI Zhengwei3   

  1. 1. School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China
    2. Shanghai Engineering Research Center for Clean Production of Textile Chemistry, Shanghai 201620, China
    3. Zhejiang Provincial Key Laboratory of Yarn Material Forming and Compound Processing Technology Research, Jiaxing, Zhejiang 314001, China
  • Received:2021-02-05 Revised:2021-06-06 Published:2021-09-15 Online:2021-09-27

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摘要：

为解决智能防水透湿膜材料温敏响应度低和温敏透湿通量不足的问题,将聚N-异丙基丙烯酰胺(PNIPAM)通过涂覆的方式复合于具有多级孔结构的聚氨酯(PU)梯度膜上,通过调控PNIPAM的涂覆量制备PNIPAM/PU梯度复合膜,并对复合膜的结构、温敏亲-疏水性和温敏湿热传递性进行研究。结果表明:PNIPAM温敏层的构筑不仅没有改变膜材料的多级孔结构,还赋予了梯度复合膜材料温敏亲-疏水转变性能,即低于转变温度(30 ℃)时表现为亲水性,高于转变温度时表现为疏水性;PNIPAM的引入提高了梯度复合膜的温敏透湿通量,50 ℃时PNIPAM质量分数为6%的梯度复合膜的透湿率为6 398.3 g/(m2·24 h),高于PU膜的透湿率(4 843.4 g/(m2·24 h)),且PNIPAM的质量分数越高,梯度复合膜的溶胀性随温度的增加下降越显著。

关键词: 多级孔, 梯度膜, 温敏性, 亲-疏水转变, 透湿性, 功能纺织材料

Abstract:

To improve the temperature-sensitivity and moisture permeability of intelligent waterproof and moisture permeable membrane, poly-N-isopropylacrylamide (PNIPAM) was coated on hierarchical pore polyurethane (PU) membranes and PNIPAM/PU gradient composite membranes were prepared by adjusting the mass fraction of PNIPAM. Structure, thermo-sensitive hydrophilic-hydrophobic and thermo-sensitive moisture permeability were investigated. The results show that the construction of PNIPAM does not change the hierarchical pore structure. It has thermo-sensitive hydrophilic-hydrophobic transition properties, exhibiting hydrophilicity when temperature below the transition temperature (30 ℃), and hydrophobicity when temperature above this temperature. Meanwhile, the introduction of PNIPAM improves thermo-sensitive moisture permeability, from 4 843.4 g/(m2·24 h) of PU to 6 398.3 g/(m2·24 h) of PNIPAM/PU gradient composite membrane at 50 ℃ when mass fraction of PNIPAM is 6%. It was also found that the higher the content of PNIPAM, the more significant decrease in swelling property with the temperature increase.

Key words: hierarchical pore, gradient membrane, thermo-sensitive, hydrophilic-hydrophobic transition, moisture permeability, functional textile material

中图分类号: 

  • TB381

图1

PU梯度膜的扫描电镜照片"

图2

不同质量分数PNIPAM制备的PNIPAM/PU梯度复合膜截面扫描电镜照片"

图3

PU梯度膜、PNIPAM和PNIPAM/PU梯度复合膜的红外光谱图"

图4

PU梯度膜和PNIPAM/PU梯度复合膜的平衡溶胀率随温度的变化"

图5

PU梯度膜和PNIPAM/PU梯度复合膜接触角随时间的变化"

图6

25和60 ℃时PNIPAM/PU梯度复合膜上水滴形态随时间的变化"

图7

不同温度下PNIPAM/PU梯度复合膜透湿性随时间的变化"

表1

PNIPAM/PU梯度复合膜的透湿性"

温度/℃ 透湿率/(g·m-2·(24 h)-1)
PU梯度膜 PNIPAM/PU梯度复合膜
25 210 150
50 4 843.4 6 398.3

图8

PU梯度膜、PNIPAM和PNIPAM/PU梯度复合膜热性能"

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