摘要
在相同实验条件下 ,先后将羟丙基和 (2 羟基 3 十二烷氧基 )丙基分别引入 3种不同相对分子质量的壳聚糖分子结构中 ,制得一系列可生物降解的两亲性的壳聚糖表面活性剂——— (2 羟基 3 十二烷氧基 )丙基 羟丙基壳聚糖 (HDP HPCHS)。通过红外光谱对其进行了结构表征 ,并在 0 2～ 1 0 0g/L质量浓度范围内测定了其泡沫性能和乳化性能。结果表明 :室温下 ,不同相对分子质量的HDP HPCHS均具有良好的泡沫性和乳化性 ,并且均随其相对分子质量的改变而呈现规律性变化。具体表现为 :HDP HPCHS的相对分子质量越高 ,达到最大起泡能力所需的溶液浓度越小 ,其乳化能力也越强 ;但其最大起泡能力和乳化层的稳定性却随相对分子质量的增大而下降。
A series of biologically degradable chitosan surfactants-(2-hydroxy-3-dodealkoxyl) propyl-hydroxypropyl chitosan (HDP-HPCHS) with different molecular weight were obtained,and their foam performance and emulsifying power was studied.The results show that all the samples perform good foaming capability and emulsifying power,which is changed regularly with molecular weight.Under the tested conditions,the higher the molecular weight which the product had,the lower the concentration is needed to meet its highest foam expansion,and the bigger the emulsifying power is;but the best foam capability and emulsion stability decreased with the increasing of products' molecular weight.
出处
《现代化工》
CAS
CSCD
北大核心
2002年第11期29-32,37,共5页
Modern Chemical Industry
基金
山东省科技厅"十五"科技攻关项目 (0 1 2 1 1 0 1 0 32 )
