摘要
在纤维素LiCl/DMAc均相溶液中,通过氯乙酰氯(ClC2OCl)与纤维素的均相酰化反应制得纤维素氯乙酸酯(Cellulose-ClAc)后,将其溶解在DMAc中,在FeCl2/4-二甲氨基吡啶(DMAP)的催化作用下,引发甲基丙烯酸丁酯(BMA)的均相ATRP聚合反应,制备了纤维素/BMA接枝共聚物(Cellulose-g-PBMA),考察了反应时间、反应温度、反应物配比等对酰化及接枝聚合反应的影响,并通过测试Cellulose-g-PBMA薄膜的接触角,对最终产物的疏水性能进行了研究;采用FTIR、NMR、SEM、TEM、AFM等分析手段对Cellulose-ClAc及Cellulose-g-PBMA的结构进行了表征;利用GPC分析了接枝聚合反应的活性特征。
Cellulose graft poly（butyl methacrylate） copolymers （Cellulose-g-PBMA） were prepared by homogeneous atom transfer radical polymerization （ATRP） process. Cellulose chloroacetate （Cellulose-C1Ac）, as macroinitiator, was synthesized first by direct acylation of cotton pulp cellulose with chloroacetyl chloride （CIC2OCI） in cellulose/LiC1/DMAc solution. Thereafter, Cellulose-C1Ac was used for the ATRP of BMA （butyl methaerylate） mediated by the FeC12/four-dimethyl aminopyridine （DMAP） catalytic system. Acylation reaction and grafting polymerization conditions, such as reaction time, reaction temperature and ratio of reactants were investigated. The hydrophobicity of Cellulose-g-PBMA copolymer was studied with contact angle measurements. Cellulose-CIAc and Cellulose-g-PBMA were characterized by means of FTIR, NMR, SEM, TEM, AFM. Gel permeation chromatography （GPC） was used to analyze the characteristics of the activity of polymerization.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2014年第3期1111-1117,共7页
CIESC Journal
基金
国家自然科学基金项目(21064008)~~
