聚甲基丙烯酸丁酯纳米粒子的合成及其动力学研究  

Synthesis and Kinetics of Polybutyl Methacrylate Nanoparticles

作　　者：顾康 阮一夫 张梦瑶 刘庚鑫 Gu Kang;Ruan Yifu;Zhang Mengyao;Liu Gengxin(State Key Laboratory of Fiber Material Modification,Center for Advanced Low-Dimensional Materials,School of Materials Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学材料科学与工程学院先进低维材料中心纤维材料改性国家重点实验室,上海201620

出　　处：《山东化工》2024年第13期26-30,共5页Shandong Chemical Industry

摘　　要：运用微乳液聚合,制备了具有不同官能度网络的三种甲基丙烯酸丁酯(PBMA)纳米粒子,用差示扫描量热仪(Differential Scanning Calorimeter,DSC)、动态光散射仪(Dynamic Light Scattering,DLS)以及旋转流变仪(MARS60,Thermo-Scientific)对样品进行测试,表征其粒径、玻璃化转变温度及线性黏弹性。分析纳米粒子熔体的线性黏弹性主曲线,发现随着交联剂官能度的增加,末端松弛时间增加。另外,将纳米粒子与不同相对分子质量的PBMA线性链混合制备纳米复合材料并进行流变测试,发现纳米粒子在小相对分子质量PBMA基质中会发生溶胀,并且其溶胀能力依赖于网络的拓扑结构,表现出不同的动力学行为;而在大分子基质中,纳米粒子的松弛行为未受影响。Three kinds of butyl methacrylate(PBMA)nanoparticles with different functional networks were prepared by microemulsion polymerization.Differential scanning calorimeter(DSC),Dynamic light scattering meter(DLS),and rotational rheometer(MARS60,Thermo-Scientific)were used to test the samples.The particle size,glass transition temperature and linear viscoelasticity were characterized.The linear viscoelastic principal curve of the nanoparticle melt was analyzed,and it was found that the relaxation time of the end increased with the increase of the functional degree of the crosslinker.In addition,we mixed nanoparticles with PBMA linear chains of different molecular weights to prepare nanocomposites and carried out rheological tests.It was found that the nanoparticles would swelling in the small-molecular weight PBMA matrix,and their swelling ability depended on the topology of the network,showing different dynamic behaviors.In the macromolecular matrix,the relaxation behavior of the nanoparticles was not affected.

关 键 词：微乳液聚合 纳米复合材料 线性黏弹性 

分 类 号：TQ316.3[化学工程—高聚物工业]