国产日产欧美精品-亚洲国产综合久久精品-色综合色国产热无码一-亚洲欧美日本国产,免费观看一区二区三区_在线观看片A免费不卡观看_亚洲а∨天堂久久精品_99久无码中文字幕一本久道

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:390          發(fā)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(lián)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
钟山县| 南康市| 民县| 赞皇县| 卓尼县| 富平县| 于田县| 柘荣县| 五河县| 临洮县| 曲靖市| 南雄市| 连州市| 武威市| 饶平县| 阿图什市| 峨眉山市| 乌拉特中旗| 青川县| 淮阳县| 绥阳县| 沙河市| 农安县| 瑞丽市| 韶山市| 屏东市| 康平县| 毕节市| 休宁县| 柯坪县| 新野县| 莆田市| 濮阳县| 乌兰浩特市| 长汀县| 海原县| 厦门市| 通辽市| 兴业县| 繁峙县| 东丽区|