丙烯酸-马来酸酐半连续水溶液共聚动力学及模型  

Kinetics and Modeling Studies on Semi-Batch Aqueous Solution Copolymerization of Acrylic Acid and Maleic Anhydride

作　　者：茹婧[1] 王文俊[1,2] 李伯耿[1] 

机构地区：[1]化学工程国家重点实验室浙江大学化学与生物工程学系,浙江杭州310027 [2]生物质4~.X-教育部重点实验室浙江大学化学与生物工程学系,浙江杭州310027

出　　处：《化学反应工程与工艺》2013年第6期526-534,共9页Chemical Reaction Engineering and Technology

基　　金：国家自然科学基金项目(21074116,20936006);长江学者和创新团队发展计划资助(IRT0942)

摘　　要：以过氧化氢为引发剂,在120℃进行丙烯酸和马来酸酐半连续水溶液共聚反应,通过改变丙烯酸和过氧化氢的加料时间以及过氧化氢用量,研究不同半连续操作对单体转化率、分子量等共聚动力学的影响规律,同时考察聚合过程中马来酸异构化和水合生成富马酸和苹果酸的副反应。结果表明,延长丙烯酸和过氧化氢的加料时间或增加过氧化氢用量,可有效地提高马来酸酐的转化率,减少富马酸和苹果酸的生成。在动力学研究的基础上,建立了丙烯酸和马来酸酐半连续水溶液共聚数学模型,模型计算结果与实验动力学数据相匹配。A semi-batch aqueous solution copolymerization of acrylic acid and maleic anhydride using hydrogen peroxide as an initiator was carried out at 120℃. The effects of feeding rates of acrylic acid and hydrogen peroxide and dosage of hydrogen peroxide on monomer conversion and molecular weight were investigated. The formation of fumaric acid and malic acid respectively via isomerization and hydration of maleic acid was also studied. The results showed that increasing the feeding rate of acrylic acid and hydrogen peroxide and increasing dosage of hydrogen peroxide could increase copolymerization of maleic anhydride and reduced the formation of fumaric acid and malic acid. A mathematical model for the semi-batch aqueous solution copolymerization of acrylic acid and maleic anhydride was developed. The model predictions were in good agreement with the experimental results.

关 键 词：丙烯酸 马来酸酐 半连续共聚 数学模型 动力学 

分 类 号：TQ316.333[化学工程—高聚物工业] O643.12[理学—物理化学]