摘要
以自制丙烯酸十八酯单体为原料,BPO为引发剂,甲苯为溶剂,采用微波技术制备了聚丙烯酸十八酯,以特征粘度、产率为指标,探讨了微波功率、辐射时间、引发剂用量、溶剂用量等因素对聚合反应的影响,并分别用红外光谱、GPC和DSC测定了聚合产物的结构、分子量及其分布、Tm和熔融热。结果表明,微波辐射在聚合物合成中显示了非常好的效果,所制备产物的分子结构特征与文献报道的并无明显差异;在微波功率195W、辐射时间15min的条件下,聚合物的分子量(Mw)达13259,分子量分布相当窄,Mw/Mn仅为1.50,特征粘度13.2mL·g-1,产率84.6%。其生产效率和节能方面充分体现了微波辅助聚合的优势。
Octadecyl acrylate polyester is prepared by microwave heating from octadecyl acrylate monomer in the presence of an initiating agent, BPO, in the toluene. The effects of microwave power and processing time, the concentration of initiating agent and the solvent on the polymer reaction are investigated. IR, GPC, DSC are employed to characterize the structure, molecular weight and distribution, Tm, and the energy of melting. Microwave-assisted technology has proven to be a excellent method of providing energy for the polymerization reaction, and the molecular structure of the product is in good a-greement with those reported in the literature. The molecular weight of the polymer is 13259, with a narrow distribution of 1.50 (Mw/Mn), when treated under at a power of 195W for 15 min. The intrinsic viscosity is 13.2mL·g-1 and the yield reaches 84.6%.Superiority of microwave-assisted synthesis is fully reflected in terms of efficiency and energy-saving.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2007年第S2期31-33,共3页
Materials Reports
关键词
微波辐射
聚丙烯酸十八酯
聚合反应
microwave-assisted synthesis, octadecyl acrylate polyester, polycondensation
