| 双亚胺共轭型聚氨酯材料的制备及其荧光和热稳定性 |
| |
| 引用本文： | 刘灿培,;卢庆新,;宋伟飞.双亚胺共轭型聚氨酯材料的制备及其荧光和热稳定性[J].化学工程与装备,2014(9):7-10. |
| |
| 作者姓名： | 刘灿培 ;卢庆新 ;宋伟飞 |
| |
| 作者单位： | [1]福建师范大学材料科学与工程学院; [2]福建省高分子材料重点实验室,福建福州350007 |
| |
| 基金项目： | 福建省自然科学基金资助项目（2012J01030）; 福建省晋江市科技局重点项目（2013J0243,2014J0137） |
| |
| 摘 要： | 香草醛与邻苯二胺缩合反应生成双羟基双亚胺,再与甲苯-2,4-二异氰酸酯的加聚反应,制备了分子骨架上含有—CH=N—键节的共轭亚胺聚氨酯。热重分析分析显示出,分子骨架上引入—CH=N—键节可以提高共轭亚胺聚氨酯材料的热稳定性。而荧光分析则表明,所制备的含有亚按键节的共轭亚胺聚氨酯的N,N-二甲基甲酰胺溶液能发射紫外荧光,而且分子内或分子间相互吸引,形成D-π-A作用和氢键作用,致使分子之间聚集,从而荧光发射光谱随浓度的增大发生红移。
|
| 关 键 词： | 双希夫碱 聚氨酯 荧光 热性能 |
Preparation,Fluorescence and Thermal Stabilities of Bis-Imine Conjugated Polyurethane Material |
| |
| Affiliation: | Can-pei Liu, Qing-xin Lu, Wei-fei Song (College of Materials Science.and Engineering, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, 350007, Fuzhou, Fujian) |
| |
| Abstract: | A Vanillin reacts with o-phenylenediamine to yield a bis-hydroxyl -bis-imine compound, which further reacts with toluene-2,4-disocyanate to produce a kind ofbis-imine conjugated polyurethane material （CAPU）. A research on fluorescence and thermal stabilities of this CAPU is made. Thermo-gravimetric analysis shows that CAPU has high enough thermal properties due to imine linkages in molecular backbone. Fluorescence spectrum analysis reveals that CAPU solution ofN,N-dimethylformamide emits ultra-violet fluorescence and this solution has red-shift phenomena in the fluorescence emission spectra because of molecule aggregations and stacks caused by intramolecular and intermolecular interactions such as D- π-A and hydrogen bonding effects. |
| |
| Keywords: | Schiff-base polyurethane fluorescence thermal stabilities |
| 本文献已被 维普 等数据库收录！ |
|
