材料期刊网

将直接光引发的低温、高纯度特性和微乳液聚合的低黏度、快速反应相结合,研究了丙烯酰胺、乳化剂、水和环己烷体系的微乳液聚合。在低温下（24℃-30℃）且不使用引发剂,采用紫外光直接引发了聚合反应并得到纳米微胶乳。通过研究反相微乳液聚合,得到光强IUV、单体浓度[M]、乳化剂浓度[E]、温度T对聚合反应的影响规律,聚合速率Rp随IUV、[M]和T的增大而变快,随[E]的增加变慢;产物特性粘数[η]随[M]的增加变大,随IUV、[E]和T的增大变小。并得到动力学方程式：Rp∝[IUV]0.4972[M]1.5048[E]-0.5731及表观活化能Ea=12.98kJ/mol。根据得到的动力学数据和实验结果探讨了聚合反应机理。

By combining the microemulsion polymerization with UV direct initiation, an efficient method for polymerization of AM with high polymerization rate and purity of product, low polymerization temperature and viscosity was developed. In the absence of initiator microemulsion system were successfully accomplished and under UV radiation, the polymerizations of AM inverse at low temperature （24℃-30℃ ） and PAM microlatex was obtained. The effects of UV intensity, monomer concentration , emulsifier concentration and temperature on polymerization rate and intrinsic viscosity of polymer were researched. Rp decreased with IE] and increased with 1uv, [M] and T. [ η]] increased with [M] and decreased with luv, [E] and T. The apparent activation energy of the reaction and polymerization kinetics of Rp was obtained as the following： Ea = 12.98 kJ/mol, Rp∝[IUV]0.4972[M]1.5048[E]-0.5731. Based on the abundant experimental results, the reachable polymerization mechanisms were protxxsed.