具有防雾防霜功能的透明自修复膜
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- 英文论文题名：Antifogging and Frost-Resisting Polyelectrolyte Coatings Capable of Healing Scratches and Restoring Transparency
- 论文作者：王燕 ; 李思衡 ; 孙俊奇
- 英文论文作者：Yan Wang ; Siheng Li ; Junqi Sun ; State Key Laboratory of Supramolecular Structure and Materials ; College of Chemistry ; Jilin University
- 年：2016
- 作者机构：超分子结构与材料国家重点实验室吉林大学;
- 论文关键词：层层组装 ; 自修复 ; 防雾 ; 防霜
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十四分会：超分子组装与软物质材料
- 语种：中文
- 分类号：O631.3;TB383.2
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十四分会 ; 超分子组装与软物质材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：178k
- 原文格式：D
- 会议级别：全国
摘要
柔性聚合物防雾/防霜膜适用于聚合物基底,即使在弯折变形或温度升高时也不会碎裂或从基底脱离。但是,柔性聚合物防雾/防霜膜比较柔软容易受到损伤,使膜的透明性或结构完整性下降。为了解决这个问题,我们以氢键作用和静电作用为成膜驱动力、利用指数增长的层层组装方法制备了聚乙烯基亚胺(PEI)/透明质酸-聚丙烯酸(HA-PAA)膜,该膜在可见光区透过率高达98%,且在极端的条件下具有优异的防雾防霜性能。同时该膜具有良好的自修复性能,当该膜受到损伤时,只需放置在25℃、相对湿度为65%的环境中,其透明性和受损结构就可以得到修复。将自修复功能引入到柔性聚合物防雾防霜膜中能有效的提高其稳定性并延长其使用寿命~([1])。
Polymeric antifogging/frost-resisting coatings are suitable for use on flexible substrates but are vulnerable to accidental scratches and cuts. To solve this problem, we present the fabrication of healable, highly transparent antifogging and frost-resisting polymeric coatings via the layer-by-layer assembly of poly(ethylenimine)(PEI) and a blend of hyaluronic acid and poly(acrylic acid)(HA-PAA). Due to their remarkable water-absorbing capability, the highly transparent and flexible(PEI/HA-PAA)*50 coatings show excellent antifogging and frost-resisting capabilities even under aggressive fogging and frosting conditions. Meanwhile, these coatings can conveniently and repeatedly heal scratches and cuts several tens of micrometers deep and wide in the same region upon exposure to water because of the dynamic nature of the PEI/HA-PAA coatings. The healability of the(PEI/HA-PAA)*50 coatings provides a new way to design transparent antifogging/frost-resisting polymeric coatings with high flexibility, enhanced reliability, and extended service life.
Polymeric antifogging/frost-resisting coatings are suitable for use on flexible substrates but are vulnerable to accidental scratches and cuts. To solve this problem, we present the fabrication of healable, highly transparent antifogging and frost-resisting polymeric coatings via the layer-by-layer assembly of poly(ethylenimine)(PEI) and a blend of hyaluronic acid and poly(acrylic acid)(HA-PAA). Due to their remarkable water-absorbing capability, the highly transparent and flexible(PEI/HA-PAA)*50 coatings show excellent antifogging and frost-resisting capabilities even under aggressive fogging and frosting conditions. Meanwhile, these coatings can conveniently and repeatedly heal scratches and cuts several tens of micrometers deep and wide in the same region upon exposure to water because of the dynamic nature of the PEI/HA-PAA coatings. The healability of the(PEI/HA-PAA)*50 coatings provides a new way to design transparent antifogging/frost-resisting polymeric coatings with high flexibility, enhanced reliability, and extended service life.
引文
[1]Wang,Y.;Li,T.;Li,S.;Sun,J.Chem.Mater.,2015,27(23),8058-8065