Preparation of Narrow- or Monodisperse Polymer Microspheres with Active Hydroxyl Group by Distillation-precipitation Polymerization
作者：Feng Bai, Rui Li, Xinlin Yang*, Shuning Li, Wenqiang Huang*
關鍵字：divinylbenzene; ethyleneglycol dimethacrylate; hydroxyethyl methacrylate; monodisperse microspheres;
論文來源：期刊
具體來源：Polym. Int., 55(2), 319-325 (2006). DOI: 10.1002/pi.1963
發(fā)表時間：2006年
Narrow-dispersion or monodisperse polymer microspheres with active hydroxyl groups were prepared by distillation–precipitation polymerization in the absence of any stabilizer. The monomer hydroxyethyl methacrylate (HEMA) was copolymerized with either commercial divinylbenzene (DVB) (containing 80 % of DVB isomers) or ethyleneglycol dimethacrylate (EGDMA) as crosslinker by distillation–precipitation polymerization technique with 2,2-azobisisobutyronitrile (AIBN) as initiator in neat acetonitrile. The effects of the crosslinker and the crosslinking degree on the morphology and the loading of the active hydroxyl group of the resultant microspheres were investigated. The agitation caused by distilling off a portion of the polymerization solvent during the polymerization avoided coagulation and
resulted in the narrow-dispersion or monodisperse polymermicrospheres for the distillation precipitation technique.