文献类型：期刊文献

中文题名：部分缩醛化聚乙烯醇温敏聚合物的合成及表征

英文题名：Synthesis and Characterization of a Thermal Sensitive Vinyl Alcohol-Vinyl Acetal Copolymer

作者：许迎雪[1];卢红[1,2];胡福增[1];郑安呐[1];肖惠宁[2,3]

机构：[1]华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海200237;[2]华南理工大学制浆造纸工程国家重点实验室,广州510641;[3]Department of Chemical Engineering,University of New Brunswick,Fredericton,NB,E3BSA3,Canada

年份：2008

卷号：34

期号：1

起止页码：77

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：20081311171216);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：华南理工大学制浆造纸工程国家重点实验室开放基金资助(200616)

语种：中文

中文关键词：聚乙烯醇;缩醛化;LCST;温敏

外文关键词：poly（vinyl alcohol）; acetalyzation; LCST; thermal sensitivity

摘要：以廉价、无毒、生物相容性良好的聚乙烯醇(PVA)为基体制备了一种新型温敏聚合物——部分缩醛化聚乙烯醇(APVA)。用1H-NMR、浊度和流变法表征了其结构及较低临界溶液温度(LCST)行为,合成了一系列不同分子量、不同缩醛度的APVA样品,系统研究了LCST的影响因素,发现高分子量、高缩醛度、高浓度APVA溶液具有较低的LCST,说明可以根据不同用途设计APVA的LCST。
The structurally modified poly（vinyl alcohol） （PVA） was prepared as a novel thermal sensitive polymer by partially acetalyzing the commercially available PVA （APVA）. ^1H-NMR, turbidimeter and rheology were used to characterize the structure and lower critical solution temperature （LCST）, respectively. A series of APVAs with different molecular weight and degree of acetalysis were synthesized and their LCSTs were studied systemically. The solution of APVA, which is with higher molecular weight, higher degree of acetalysis and higher concentration, shows the lower LCST. The result strongly suggests that the LCST of APVA could be designed easily according to its application.