摘要
利用基团贡献法计算了聚丙烯成核剂DDMBS的溶解度参数(δ=26.54J1/2.cm-3/2),在此基础上计算了部分溶剂与DDMBS样品的相容性参数,其中P(DDMBS～C6H5CH2OH)=26.94,P(DMDBS～C6H5CH2CH2OH)=35.15,P(DDMBS～1,2-二氧六环)=113.83,即苯甲醇是DDMBS成核剂的最好溶剂,其次是苯乙醇,再次是1,4-二氧六环;利用溶解度参数理论,预测DDMBS的混合溶剂为苯甲醇～甲醇和苯乙醇～甲醇;用浊度滴定法测定了成核剂DDMBS的溶解度参数,测定值为δ实验=25.24(J/ml)1/2,与用基团贡献法计算值基本一致;测定了DDMBS试样在不同溶剂中的溶解度,并建立了该成核剂试样在不同溶剂中的溶解度与温度的关系方程;在相同温度下,DDMBS在苯甲醇中溶解度稍大于在苯乙醇中的溶解度,DDMBS在1,4-二氧六环中的溶解度小于在苯甲醇、苯乙醇中的溶解度。
Solubility parameter δ of PP nucleating agent DDMBS（1,3-2,4-di-3,4-dimethylbenzylidene sorbitol） was calculated by means of group contribution method and its value was 26.54 J1/2 ·cm-3/2,On this basis,some compatibility parameters between organic solvents and DDMBS were also estimated such as P（DDMBS^C6H5CH2OH）=26.94,P（DDMBS^C6H5CH2CH2OH）=35.15 and P（DDMBS^1,4-dioxane）=113.83.Therefore,as a solvent to dissolve DDMBS phenylcarbinol was the best,and benzyl carbinol was better than 1,4-dioxane.The solubility and the solubility curves of DDMBS in the above 3 solvents were measured by a dynamic method,meanwhile,the equations between solubility and temperature were set up respectively in this study.At the same temperature,the solubility of DDMBS in the following solvents was phenylcarbinol benzyl carbinol 1,4-dioxane.
出处
《化学世界》
CAS
CSCD
北大核心
2012年第10期588-594,共7页
Chemical World
基金
中国石化股份有限公司资助项目(208058)
