性做久久久久久坡多野结衣-性做久久久久久久久浪潮-性欲影院-性影院-国产精品线路一线路二-国产精品兄妹在线观看麻豆

產品展廳收藏該商鋪

您好 登錄 注冊

當前位置:
美國布魯克海文儀器公司>技術文章>A New Family of Thermo-, pH-, and CO2-Responsive Homopolymers of Poly[Oligo(ethylene glycol) (N-dial

技術文章

A New Family of Thermo-, pH-, and CO2-Responsive Homopolymers of Poly[Oligo(ethylene glycol) (N-dial

閱讀:401          發布時間:2017-10-20
 作者 Ke Wang†, Shengli Chen† , and Wangqing Zhang*†‡

 Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China

 Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China

 

摘要:A new family of thermo-, pH-, and CO2-responsive homopolymers of poly[oligo(ethylene glycol)(N-dialkylamino)methacrylate]s combining the pendants of oligo ethylene glycol (OEG) moiety and dialkylamine are synthesized by RAFT polymerization. In these poly[oligo(ethylene glycol) (N-dialkylamino) methacrylate]s, the OEG moiety as well as the dialkylamine group affords thermoresponse, and the dialkylamine group affords pH-, and CO2-response. The phase transition temperature (CP) of poly[oligo(ethylene glycol) (N-dialkylamino) methacrylate]s is firmly correlative to the number of the OEG moiety and the dialkylamine group, and it is found that higher number of the OEG moiety and higher CP, and the longer dialkylamine group and the lower CP, respectively. By tuning the OEG moiety and the dialkylamine group, eight thermo-, pH-, and CO2-responsive homopolymers with CPs ranging from 7 to 79 °C are synthesized. The thermoresponsive phase transition of poly[oligo(ethylene glycol) (N-dialkylamino) methacrylate]s is investigated by temperature-variable 1H NMR analysis, and the parameters affecting thermoresponsive phase transition of poly[oligo(ethylene glycol) (N-dialkylamino) methacrylate]s including polymerization degree, polymer concentration, terminals attached to the polymer backbone, salt, and urea are investigated. Multithermoresponsive diblock copolymer and triblock copolymer exhibiting two and three CPs are synthesized, and their versatile micellization upon temperature changing is demonstrated.

收藏該商鋪

登錄 后再收藏

提示

您的留言已提交成功!我們將在第一時間回復您~

對比框

產品對比 產品對比 聯系電話 二維碼 意見反饋 在線交流

掃一掃訪問手機商鋪
010-62081908
在線留言
主站蜘蛛池模板: 海淀区| 高州市| 咸宁市| 利辛县| 屯昌县| 赞皇县| 监利县| 高淳县| 四子王旗| 交口县| 绥江县| 吉林市| 上林县| 东乡族自治县| 鄄城县| 道孚县| 沙坪坝区| 金湖县| 合肥市| 喜德县| 桑植县| 金川县| 襄汾县| 游戏| 泰兴市| 天水市| 安多县| 建德市| 开鲁县| 高淳县| 黑河市| 宝清县| 广饶县| 宝鸡市| 时尚| 咸丰县| 汾西县| 蕉岭县| 广西| 台北县| 黑河市|