摘要
通过X-射线粉末衍射分析了接枝螺噁嗪基团的羧甲基甲壳素衍生物的结构,研究了其溶解性能,并通过紫外可见吸收光谱探讨了其光致变色性质。结果表明,接枝改性反应在一定程度上破坏了羧甲基甲壳素的有序结构,导致接枝产物具有较羧甲基甲壳素更优异的水溶性;高分子介质在空间上阻碍了螺噁嗪基团的光致变色过程,导致接枝共聚物光致变色热稳定性较螺噁嗪单体显著提高。
The structure of carboxymethyl chitin derivate grafted with spirooxazine group had been analyzed by XRD. Its solubility was tested, and its photochromic property was discussed by UV-Vis spectrophotometry.The results showed that the graft copolymer had better water-solubility than carboxymethyl chitin because the ordered structure of carboxymethyl chitin had been destroyed by the graft reaction. The thermal stability of photochromism of graft copolymer has been improved significantly compared with spirooxazine monomer,which was attributable to the steric hindrance caused by the polymer medium.
出处
《化学与生物工程》
CAS
2008年第6期77-78,共2页
Chemistry & Bioengineering
基金
陕西国防工业职业技术学院研究与开发项目(0705)
