Ye Qiang, Zhang Zhicheng, Jia Haiting, He Weidong, Ge Xuewu
Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China.
J Colloid Interface Sci. 2002 Sep 15;253(2):279-84. doi: 10.1006/jcis.2002.8465.
Polyacrylamide microparticles were directly produced by radiation-induced dispersion polymerization in aqueous alcohol media using poly(N-vinylpyrrolidone) as a steric stabilizer at room temperature. The hydrodynamic diameter of a polymer particle and its distribution were measured on a dynamic laser light-scattering spectrometer. This method takes advantages of the specialties of radiation induction, and highly uniform polymer microspheres were obtained with high conversion. The number of the particle produced in the early stage of the polymerization was found to be constant during the remainder of the polymerization. The effects of various polymerization parameters, such as absorbed dose rate, monomer concentration, stabilizer content, medium polarity, and polymerization temperature on the particle size and size distribution were systematically investigated.
在室温下，以聚（N-乙烯基吡咯烷酮）作为空间稳定剂，通过辐射诱导分散聚合在水醇介质中直接制备聚丙烯酰胺微粒。在动态激光光散射光谱仪上测量聚合物颗粒的流体动力学直径及其分布。该方法利用了辐射诱导的特性，以高转化率获得了高度均匀的聚合物微球。发现在聚合的剩余阶段，聚合早期产生的颗粒数量是恒定的。系统地研究了各种聚合参数，如吸收剂量率、单体浓度、稳定剂含量、介质极性和聚合温度对粒径和粒径分布的影响。
