私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

當(dāng)前位置:> 首頁(yè) > 論文著作 > 正文
Enhancing antifogging/frost-resisting performances of amphiphilic coatings via cationic, zwitterionic or anionic polyelectrolytes
作者:Bai, S.; Li, X.*; Zhang, R.; Li, C.; Zhu, K.; Sun, P.; Zhao, Y.; Ren, L.; Yuan, X.*
關(guān)鍵字:Copolymer; Polyelectrolyte; Amphiphilic coating; Antifogging; Frost-resisting
論文來源:期刊
具體來源:CHEMICAL ENGINEERING JOURNAL 2019, 357, 667
發(fā)表時(shí)間:2019年
Polymeric antifogging and frost-resisting coatings were successfully prepared, but the performances of amphiphilic coatings containing different kinds of cationic, zwitterionic and anionic polyelectrolytes are still needed to investigate systematically. In this work, antifogging/frost-resisting coatings with high transparence were developed from amphiphilic copolymers of cationic, zwitterionic or anionic poly(2-(dimethylamino)ethyl methacrylate (DMAEMA)-co-2,2,2-trifluoroethyl methacrylate (FMA))-b-polyelectrolytes with a small amount of ethylene glycol dimethacrylate via UV-curing. Studies on the prepared amphiphilic coatings suggested that the cationic and zwitterionic coatings exhibited superior antifogging properties, whereas the anionic polyelectrolyte-based coating demonstrated a better frost-resisting behavior. Water molecule activities in the amphiphilic coatings were analyzed by differential scanning calorimetry, Raman spectroscopy and low field nuclear magnetic resonance. It was found that the cationic and zwitterionic coatings containing 2-(methacryloyloxy)-ethyltrimethyl ammonium chloride and sulfobetaine methacrylate, respectively, exhibited stronger polymer-water interactions dominated by strong hydrogen bonds, and held more nonfreezable water content with shorter transverse spin-spin relaxation time T-2 than the anionic coating containing 3-sulfopropyl methacrylate potassium (SPMA). Electrostatic interactions between anionic SPMA and DMAEMA units in the copolymer could weaken the polymer-water interaction, leading to a compromise in the antifogging performance and an enhancement of frost-resisting ability of the coating. The results of this study would be applicable for exploring the advanced antifogging/frost-resisting coatings.
主站蜘蛛池模板: 贡嘎县| 凤山县| 林州市| 武夷山市| 敖汉旗| 巩留县| 宜黄县| 合水县| 金溪县| 渝北区| 宁乡县| 弋阳县| 黄山市| 宜州市| 黑水县| 隆安县| 永州市| 霍城县| 连平县| 永丰县| 上虞市| 和顺县| 玉门市| 甘德县| 乡城县| 南城县| 金塔县| 大余县| 尼木县| 常州市| 正安县| 杭州市| 钟山县| 卢湾区| 绥江县| 普兰店市| 图木舒克市| 屯门区| 博兴县| 襄汾县| 盈江县|