引用本文:
戴李宗, 邹友思, 陈世群, 潘容华. MMA-St无皂乳液聚合成核机理探讨[J]. 应用化学,
1993, 10(4): 51-54.
Citation: Dai Lizong, Zou Yousi, Chen Shiqun, Pan Ronghua. ON NUCLEATION MECHANISM IN EMULSIFIER-FREE EMULSION COPOLYMERIZATION OF METHYL METHACRYLATE AND STYRENE[J]. Chinese Journal of Applied Chemistry, 1993, 10(4): 51-54.
Citation: Dai Lizong, Zou Yousi, Chen Shiqun, Pan Ronghua. ON NUCLEATION MECHANISM IN EMULSIFIER-FREE EMULSION COPOLYMERIZATION OF METHYL METHACRYLATE AND STYRENE[J]. Chinese Journal of Applied Chemistry, 1993, 10(4): 51-54.
MMA-St无皂乳液聚合成核机理探讨
English
ON NUCLEATION MECHANISM IN EMULSIFIER-FREE EMULSION COPOLYMERIZATION OF METHYL METHACRYLATE AND STYRENE
Abstract:
The emulsifier-free emulsion copolymerization of MMA with St has been carried out. At 70℃,[KPS]=5.55×10-3mol/L,[MMA]=0.51mol/L and[St]=0.49mol/L a higher conversion, smaller emulsion particles and greater concentration of particles can be obtained. A homogeneous nucleation mechanism has been proposed on the basis of the molecular weight and its distribution measurements in the course of the copolymrization. When the value of conversion exeessed 30.9%, the agglutination degree of the emulsion particles surpassed the formation speed of the particles. Radicles formed from KPS on decomposition appeared to stabilize the emulsion.
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