响应面法优化聚丙烯酸酯的合成工艺

Optimization of Synthesis Process for Polyacrylate by Response Surface Method

采用Box-Behnken Design(BBD)响应面法优化聚丙烯酸酯树脂的合成工艺条件。选用偶氮二异庚腈(ABVN)为热引发剂,丙二醇甲醚醋酸酯(PMA)为溶剂,通过中心组合实验,考察聚合温度(T)、引发剂用量(Id)和固含量(Sc)三个因素对聚丙烯酸酯树脂分子量(Mn)的影响,得出所需合成条件参数组合,并建立多元回归数学模型。结果表明,理论分子量为6.0×104的聚丙烯酸酯,其最佳合成参数为聚合温度75℃、引发剂用量2.3wt%、固含量40%。

Box-Behnken Design response surface method was used to optimize the synthesis process of polyacrylate resin.Polyacrylate resin was synthesized with2,2’-azobisisoheptonitrile(ABVN)as thermal initiator in propylene glycol methyl ether acetate(PMA).BBD central composite experiment was adopted to investigate the influences of polymerization temperature,initiator dosage and solid content on molecular weight.Then the optimal conditions were obtained and a multiple regression mathematical model was established.The results showed that under the conditions of polymerization temperature75℃,initiator dosage2.3wt%and solid content40%,the theoretical molecular weight of polyacrylate was6.0×104.