超声条件下二异氰酸酯桥联改性β-环糊精

化工进展

超声条件下二异氰酸酯桥联改性β-环糊精

周玉青1，2，黄娟1，韩萍芳1，吕效平1

1南京工业大学化学化工学院，江苏南京 210009；2上海宝钢化工有限公司，江苏南京 210039

出版日期:2011-09-05 发布日期:2011-09-05

Cross-linking of β-cyclodextrin polymers with hexamethylene diisocyanate under ultrasonic irradiation

ZHOU Yuqing1，2，HUANG Juan1，HAN Pingfang1，Lü Xiaoping1

1College of Chemistry and Chemical Engineering，Nanjing University of Technology，Nanjing 210009，Jiangsu，China；2 Shanghai Baosteel Chemical Limited Company，Nanjing 210039，Jiangsu，China

Online:2011-09-05 Published:2011-09-05

摘要/Abstract

摘要：

二异氰酸酯在超声条件下对β-环糊精（β-CD）进行改性，制得改性环糊精的交联聚合物。用正交试验法，以交联聚合物产率为评价指标，筛选二异氰酸酯改性环糊精主要影响因素和最佳合成工艺条件：n(异氰酸酯)∶n(β-CD) 的摩尔比约为1∶9；二异氰酸酯选用六亚甲基而异氰酸酯（HDI），超声声强0.1 W/cm²，反应温度60℃，反应时间7 h。用红外光谱（IR）、扫描电镜（SEM）、热重分析（TG）等检测方法对交联产物进行表征。结果表明：改性后的β-CD保留了其原有的空腔结构，环糊精与二异氰酸酯反应生成了氨基甲酸酯基键，交联后的聚合物形成了具有网络的形貌；超声条件下合成环糊精聚合物可以降低反应温度、缩短反应时间，交联聚合物形成了微球状表面和多孔的空腔结构。

Abstract:

Crosslinked β-cyclodextrin（β-CyD）polymers with diisocyanate was prepared under ultrasonic irradiation. The key parameters and optimum synthesis conditions were optimized by orthogonal experiment and evaluated with yield ratio. The ratio of β-CyD∶diisocyanate was 1∶9（mol/mol），hexamethylene diisocyanate（HDI）was chosen as crosslinking agent，the ratio of dibutyltin dilaurate∶triethylene diamine was 1∶1.5（wt/wt），reaction temperature was 60 ℃，reaction time was 7 h. FTIR，SEM and TGA were used for the characterization of crosslinked polymers. The results suggested that β-CyD polymers retained cavity structure，crosslinked interactions of β-CyD and diisocyanate formed carbamate groups and the network surface features. Reaction temperature was lowered and reaction time was shortened under ultrasonic irradiation. The crosslinked polymers had micro-sphere surface topography and multi-hole cavity structure.

周玉青1，2，黄娟1，韩萍芳1，吕效平1. 超声条件下二异氰酸酯桥联改性β-环糊精 [J]. 化工进展.

ZHOU Yuqing1，2，HUANG Juan1，HAN Pingfang1，Lü Xiaoping1. Cross-linking of β-cyclodextrin polymers with hexamethylene diisocyanate under ultrasonic irradiation[J]. Chemical Industry and Engineering Progree.