摘要
以苯乙烯(St)为单体、聚乙烯吡咯烷酮(PVP)为稳定剂、偶氮二异丁腈(AIBN)为引发剂,无水乙醇为分散介质,采用分散聚合法制备单分散尺寸可控的聚苯乙烯(PSt)微球.系统研究了单体浓度、稳定剂用量、引发剂用量及温度对聚苯乙烯微球粒径及粒径分布的影响,并采用SEM、光学显微镜、粒度分析仪对微球形貌和尺寸进行表征,用傅里叶红外光谱(FTIR)对其结构进行表征.研究结果表明,在单体浓度为22%,PVP用量为0.65%,AIBN用量为0.32%,反应温度70℃条件下,能够制备出粒径为3.55μm单分散表面光滑的聚苯乙烯微球.
Monodisperse size-controlled polystyrene microspheres were prepared by dispersion polymerization of styrene in ethanol dispersion medium,using PVP as a stabilizer and AIBN as the initiator.The influence factors,such as monomer concentration,stabilizer concentration,initiator concentration and reaction temperature on the size and size distribution were investigated.The morphology and size of PSt microspheres was characterized by SEM,particle size analyzer and optical microscope.And the Fourier transform infrared （FTIR） spectra of PSt microspheres were also recorded by a FTIR spectrometer.The results showed that monodisperse PSt microspheres in the size of 3.55 μm with smooth surface were prepared when the monomer concentration is 22％,stabilizer PVP is 0.65％,initiator AIBN is 0.32％ and reaction temperature is 70 ℃.
出处
《郑州大学学报（工学版）》
CAS
北大核心
2014年第5期105-108,共4页
Journal of Zhengzhou University（Engineering Science）
基金
国家自然科学基金资助项目(21271158)
关键词
聚苯乙烯微球
分散聚合
单分散
粒径分布
polystyrene microsphere
dispersion polymerization
monodisperse
size distribution
