高校化学工程学报2011，Vol.25Issue(2)：242-247,6.
表面活性单体对丙烯酸酯梯度共聚物性能的影响
Influence of Surface Active Monomer on Properties of Acrylate Gradient Copolymer
摘要
Abstract
The latex of acrylate copolymer with gradient structure of molecules was synthesized by gradient emulsion polymerization with using sodium dodecyl biphenylate disulfatepoly(DSB) as emulsifier, sodium 1-allyloxy-2-hydroxypropyl sulfonate(COPS-1), sodium acrylamide-2-methylpropane sulfonate (AMPS-Na) or HS-10 as surface active monomer separately, BA, MMA and MAA as co-monomers. The effect of the amount of COPS-1 on the size and distribution of particles, as well as mechanical stability, thermal property, microphase separation, water absorptivity and tensile strength of the film formed by the latex were investigated. The experimental results show that, when the COPS-1 content is fixed at 70％ (mass), the monomers have high conversion(x=97.5％) and the film has good mechanical stability, low water absorptivity (w=4.25％) and high tensile strength (μ=0.85 MPa). The DSC analysis shows that the coplymer only has a single wide glass transition peak, this indicates that the copolymer has gradient structure. SEM shows that the microphase separation in the copolymer is few.关键词
梯度乳液聚合/分子间梯度共聚物/表面活性单体/丙烯酸酯乳液/微相分离Key words
gradient emulsion polymerization/ molecular gradients/ surface active monomer/acrylate emulsion/ microphase separation分类
化学化工引用本文复制引用
魏霞,张心亚,江煜灵,裴勇兵,陈焕钦..表面活性单体对丙烯酸酯梯度共聚物性能的影响[J].高校化学工程学报,2011,25(2):242-247,6.基金项目
国家自然科学基金资助项目(50083017). （50083017）
