以丙烯酸丁酯(BA)、甲基丙烯酸甲酯(MMA)和苯乙烯(St)为单体,采用种子悬浮聚合的方法制备了PBA/PMMA、PBA/PS复合物,考察了分散剂相对分子质量、溶胀时间、单体比对其颗粒形态的影响,并将该复合物作为改性剂用于共混改性PVC.研究结果表明,当低相对分子质量聚乙烯吡咯烷酮(PVP)作分散剂时,聚合体系不稳定,导致PBA种子的聚并;高相对分子质量的PVP更有利于聚合体系的稳定,且随PVP用量的增加种子粒径减小;PBA/PMMA改性PVC材料的冲击强度随MMA溶胀时间的延长而降低;PBA/PS共混PVC体系的缺口冲击韧性随其核壳比的增大而增加,其热稳定性随PBA/PS加入量的增加而提高;复合粒子的加入均降低了PVC的加工温度,改善了其塑化性能.
参考文献
| [1] | Wu GF;Zhao JF;Shi HT;Zhang HX .The influence of core-shell structured modifiers on the toughness of poly (vinyl chloride)[J].European Polymer Journal,2004(11):2451-2456. |
| [2] | J.-S.Lee;F.-C.Chang .Effect of the Core-Shell Impact Modifier Shell Thickness on Toughening PVC[J].Polymer engineering and science,2004(10):1885-1889. |
| [3] | Mingwang Pan;Liucheng Zhang;Linzhan Wan;Ruiqiang Guo .Preparation and characterization of composite resin by vinyl chloride grafted onto poly(BA-EHA)/poly(MMA-St)[J].Polymer: The International Journal for the Science and Technology of Polymers,2003(23):7121-7129. |
| [4] | 温绍国,陈月辉,王锦成,翁志学.PBA/PMMA制备过程及结构控制基础研究[J].上海工程技术大学学报,2006(04):295-298. |
| [5] | Goncalves OH;Asua JM;de Araujo PHH;Machado RAF .Synthesis of PS/PMMA core-shell structured particles by seeded suspension polymerization[J].Macromolecules,2008(19):6960-6964. |
| [6] | Dowding PJ.;Vincent B. .Suspension polymerisation to form polymer beads [Review][J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2000(2):259-269. |
| [7] | Lin, W.;Biegler, L.T.;Jacobson, A.M. .Modeling and optimization of a seeded suspension polymerization process[J].Chemical Engineering Science,2010(15):4350-4362. |
| [8] | Chen, TH;Xu, P;Luo, YY;Jiang, L;Dan, Y;Zhang, L;Zhao, K .Preparation of Poly(butyl acrylate)-Poly(methyl methacrylate) (Core-Shell)/Phosphor Composite Particles and its Application in PVC Matrix[J].Journal of Applied Polymer Science,2009(1):496-502. |
| [9] | Chai SL;Jin MM;Tan HM .Comparative study between core-shell and interpenetrating network structure polyurethane/polyacrylate composite emulsions[J].European Polymer Journal,2008(10):3306-3313. |
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