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

當前位置:群英聚首 > 論文著作 > 正文
Synthesis, characterization and the rapid response property of the temperature responsive PVP-g-PNIPAM hydrogel
來源:金淑萍教授個人網站 發布日期:2011-04-26
作者:Shuping Jin
關鍵字:Poly(N-vinylpyrrolidone)-graft-poly; (N-isopropylacrylamide);Grafting from;Fluorescence anisotropy; Rapid response
論文來源:期刊
發表時間:2008年

In this study, a poly(N-vinylpyrrolidone)-graft-poly(N-isopropylacrylamide) hydrogel
(PVP-g-PNIPAM) was synthesized through the ‘‘grafting from” process. Grafting of temper-
ature responsive poly(N-isopropylacrylamide) (PNIPAM) brushes was carried out from the
poly(N-vinylpyrrolidone) (PVP) synthesized with free radical polymerization and function-
alized with ATRP initiator, PVP–Br, which was performed through a bromination reaction
between pendant allylic groups of the PVP and N-bromosuccinimide (NBS). The structure
of the initiator and PVP-g-PNIPAM was characterized by ultraviolet and visible (UV/Vis)
absorption, nuclear magnetic resonance (NMR) spectroscopy and Fourier transform infra-
red (FTIR) measurements. Scanning electron microscope (SEM) morphology measurement
displayed some dendritic grafted chains dangling onto the pore wall of the hydrogel.
The characteristic in response to the change in environmental temperature was investi-
gated by the ?uorescence anisotropy and UV/Vis transmittance measurements. The results
showed that the PVP-g-PNIPAM hydrogel exhibited rapid response to the change in envi-
ronmental temperature due to free and mobile graft chains compared with the P(VP-co-
NIPAM) hydrogel, which was prepared by free radical copolymerization in this work.

Copyright © 2005 Polymer.cn All rights reserved
中國聚合物網 版權所有
經營性網站備案信息

京公網安備11010502032929號

工商備案公示信息

京ICP證050801號

京ICP備12003651號

主站蜘蛛池模板: 天台县| 平安县| 桐城市| 葫芦岛市| 山阳县| 延川县| 镇宁| 凉城县| 余姚市| 黄山市| 古交市| 吕梁市| 江华| 和田县| 龙陵县| 上思县| 自贡市| 济源市| 石城县| 东台市| 商都县| 措美县| 贵阳市| 内乡县| 抚顺市| 格尔木市| 吴忠市| 庆元县| 岳西县| 寻甸| 阆中市| 龙泉市| 阿勒泰市| 本溪| 龙州县| 云和县| 陇川县| 顺昌县| 靖州| 濮阳市| 屏边|