紫外光交联CdS-聚氨酯膜的制备及荧光特性研究  

SYNTHESIS AND FLUORESCENCE OF UV-CROSS- LINKING CdS-POLYURETHANE COMPLEX

作　　者：吴承佩[1] 刘剑[1] 黄度[1] 刘天琦[1] 郁志新[1] 赵爱华[1] 

机构地区：[1]中国科学技术大学高分子科学与工程系,安徽合肥230026

出　　处：《高分子材料科学与工程》2002年第6期174-177,共4页Polymer Materials Science & Engineering

摘　　要：合成了 Cd S-聚氨酯 (带不饱和端基 )紫外光交联复合物膜 ,采用红外、DSC、DTA、X- ray衍射对交联膜进行了表征。探讨了 Cd2 +与高分子链之间的配位作用 ,Cd S粒子对聚氨酯 Tg 和结晶度的影响 ,着重研究了 Cd S含量、光固化时间、通 H2 S量和 Zn2 +对 CdCdS-Polyurethane (with unsaturated end groups) complex was synthesized. The membranes made by curing complex with UV light are semitransparent, uniform, having good mechanical flexibility and thermal stability and their fluorescence spectrums remain unchanged after 30 days. The thin membrane exhibits intense red light at 700 nm under UV excitation at room temperature. The emission intensity increases nearly linearly with the increasing of CdS content, and no significant concentration-quenching phenomenon was observed at the CdS content of 0.25~5.0 mass percent. The add of ZnS has no significant influence on the emission intensities of the CdS-Polyurethane membranes, however, fluorescence spectrum turns wider in the presence of ZnS. This character may be used to adjust fluorescence wavelength.

关 键 词：紫外光交联 CdS-聚氨酯膜 制备 荧光特性 研究 复合物 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] TQ320.721