摘要
采用壳聚糖(CS)对天然高分子丝素(SB)进行改性,制备了丝素-壳聚糖(SB-CS)共混膜.FTIR、TGA、SEM的分析表明,该共混膜中SB和CS具有良好的相容性,壳聚糖改善了丝素膜的吸水性和机械性能.通过渗透实验发现不同的金属离子在共混膜中的渗透速率有很大的差异,一些常见的金属离子渗透速率的大小顺序为:K+>Ca2+>Cd2+>Pb2+>Cu2+>Ni2+.
The SB-CS blend membranes were prepared in the study.The experimental results showed that chitosan and silk fibroin are compatible in the blend membranes,and the mechanical properties and hydrophilicity of silk fibroin membrane can be improved by blending CS.Permeability experiments showed the permeation behaviors of various metal ions in the blend membranes are different.The permeability order of some common metal ions through the blend membrane is:K^+>Ca^(2+)>Cd^(2+)>Pb^(2+)>Cu^(2+)>Ni^(2+).
出处
《膜科学与技术》
CAS
CSCD
北大核心
2004年第1期6-10,共5页
Membrane Science and Technology
基金
国家863资助项目(2002AA60)
关键词
壳聚糖
丝素
共混膜
制备
金属离子
渗透速率
silk fibroin(SB)
chitosan(CS)
blend membrane
permeation
metal ions
