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

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

  1. 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:2011-09-20 Published:2011-09-05

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. 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

Abstract:

Crosslinked β-cyclodextrinβ-CyDpolymers 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-CyDdiisocyanate was 19mol/mol),hexamethylene diisocyanateHDIwas chosen as crosslinking agentthe ratio of dibutyltin dilauratetriethylene diamine was 11.5wt/wt),reaction temperature was 60 reaction time was 7 h. FTIRSEM and TGA were used for the characterization of crosslinked polymers. The results suggested that β-CyD polymers retained cavity structurecrosslinked 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.

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19;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。