作　　者： ; ; ;

机构地区： 华南理工大学轻工与食品学院

出　　处： 《现代食品科技》 2011年第4期393-396,共4页

摘　　要： 采用共振瑞利散射光谱、拉曼散射光谱和荧光光谱分析技术研究羧甲基纤维素钠(CMC)与聚乳酸(PLA)在溶液中的相互作用。通过考察二者不同比例所组成的混合体系的共振散色光谱、拉曼光谱及荧光光谱的变化规律,探讨了CMC与PLA在溶液中的相互作用机理。结果表明:CMC的加入使得共振散色光谱信号突然增强,而PLA溶液的荧光特性不断被猝灭,拉曼共振峰也发生明显偏移。在CMC和PLA以适当的比例组成的混合体系中,CMC与PLA之间以氢键结合的方式在溶液中形成了复杂的网络结构。 By means of resonance scattering,Raman scattering and fluorometry,the interaction between carboxymethylcellulose sodium（CMC） and polylactic acid（PLA） is discussed.The interaction mechanism between CMC and PLA is discussed by the changes of the resonance scattering spectra,Raman scattering spectra and fluorescence spectra of the blend system,which is composed of different proportions.It is concluded that the addition of CMC makes the resonance signal abruptly enhanced,the fluorescence characteristics of PLA is gradually disappearred,and an obvious shift of Resonance Raman peak appeared.In the blend system of an appropriate proportion,there exist a complex network structure between CMC and PLA connected by hydrogen bond.

关 键 词： 羧甲基纤维素钠 聚乳酸 共振散射 拉曼散射 荧光分析

领　　域： [理学] [理学]