核壳复合粒子的制备  

Preparation of core-shell composite particles

作　　者：王静[1] 

机构地区：[1]天津现代职业技术学院,天津300350

出　　处：《化学推进剂与高分子材料》2015年第1期71-74,共4页Chemical Propellants & Polymeric Materials

摘　　要：以硅烷偶联剂改性的纳米二氧化钛(SB570TiO为核材料,苯乙烯(St和二乙烯苯(DVB共聚物为壳材料,通过分散聚合法制备核壳复合粒子。通过用透射电子显微镜对粒子形态的观察,研究了稳定剂用量、引发剂用量、单体用量以及反应介质对核壳复合粒子制备的影响。结果表明,在mSB570TiO为1.47 gmSt为2.00 gmDVB为2.00 gm偶氮二异丁腈(AIBN为0.20 gm聚乙烯基吡咯烷酮K30PVP为2.00 g反应介质为乙醇时,能得到近球形的核壳复合粒子。The core-shell composite particles were prepared by the dispersion polymerization method using silane coupling agent modified nano titanium dioxide （SB570-TiOz） as the core material, styrene（St）-divinylbenzene（DVB） copolymer as the shell material. The influence of stabilizer amount, initiator amount, monomer amount and reaction medium on preparation of the core-shell composite particles was investigated by observing the morphologies of the particles with transmission electron microscope. The results show that the nearly spherical core-shell composite parti- cles can be obtained when m（SB570-YiO2） is 1.42 g, re（St） is 2.00 g, m（DVB） is 2.00 g, m（azodiisobutyronitrile （AIBN）） is 0.20 g, m（polyvinyl pyrrolidone K30 （PVP）） is 2.00 g, and reaction medium is ethanol.

关 键 词：核壳复合粒子 苯乙烯 二乙烯苯 分散聚合 粒子形态 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TB33