摘要
采用重结晶的方法纯化并超细化酞菁蓝,得到粒径为200～500nm的超细化酞菁蓝晶体。通过表面改性的方法提高了酞菁蓝在四氯乙烯中的悬浮性能,得到了稳定的酞菁蓝电泳液。以脲醛树脂为壁材,电泳液为囊芯,采用"一步法"原位聚合制备了蓝色电子墨水微胶囊。扫描电子显微镜(SEM)照片表明,制得的微胶囊粒径为30～50μm,球形规整,表面光滑。研究了影响微胶囊制备的关键因素,最佳的微胶囊制备条件为:聚乙烯醇和尿素的质量比为0.20,反应时间为3～4h,pH为3～4,搅拌速率为500～700r/min。
Pigment phthalocyanine blue（PB） was purified and refined by recrystallization in alcohol solu- tion to get 200--500 nm rod-like PB crystals. Octadecylamine was used to modify the surface and improve the dispersion in tetrachloroethylene of PB crystals. Microcapsules containing the PB E-ink were success- fully prepared by in situ polymerization of urea and formaldehyde. Scanning electron microscope （SEM） images showed that the microcapsules had a regular spherical shape with a particle size of 30--50μm and a smooth surface. The optimum conditions of the preparation were confirmed as： the mass ratio of surfactant poly（vinyl alcohol） to urea, 0.2; reaction time, 3--4 h; pH, 3--4; stirring rate, 500--700 r/min.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2013年第1期29-36,共8页
Journal of Functional Polymers
关键词
微胶囊
酞菁蓝
超细化
脲醛树脂
原位聚合
microcapsule
phthalocyanine blue
ultrafining
urea-formaldehyde resin
in situ polymeriza-tion
