湘潭大学自然科学学报
湘潭大學自然科學學報
상담대학자연과학학보
NATURAL SCIENCE JOURNAL OF XIANGTAN UNIVERSITY
2009年
4期
37-40
,共4页
β-环糊精%聚乳酸%接枝共聚物%临界胶束浓度
β-環糊精%聚乳痠%接枝共聚物%臨界膠束濃度
β-배호정%취유산%접지공취물%림계효속농도
β-cyclodextrin%poly(lactide)%graft copolymers%critical micelle concentration
在水中制备了β-环糊精/聚乳酸接枝共聚物(β-CD -g-PLA)胶束,以芘为探针,采用稳态荧光法研究了胶束的形成及临界胶束浓度(CMC)),利用动态光散射(DLS)和透射电镜(TEM)研究了胶束的粒径分布和形态.结果表明,在一定条件下接枝共聚物在水中能够形成球形的稳定胶束,CMC值和胶束粒径随着共聚物中疏水性聚乳酸(PLA)链段含量的增加而减小.
在水中製備瞭β-環糊精/聚乳痠接枝共聚物(β-CD -g-PLA)膠束,以芘為探針,採用穩態熒光法研究瞭膠束的形成及臨界膠束濃度(CMC)),利用動態光散射(DLS)和透射電鏡(TEM)研究瞭膠束的粒徑分佈和形態.結果錶明,在一定條件下接枝共聚物在水中能夠形成毬形的穩定膠束,CMC值和膠束粒徑隨著共聚物中疏水性聚乳痠(PLA)鏈段含量的增加而減小.
재수중제비료β-배호정/취유산접지공취물(β-CD -g-PLA)효속,이비위탐침,채용은태형광법연구료효속적형성급림계효속농도(CMC)),이용동태광산사(DLS)화투사전경(TEM)연구료효속적립경분포화형태.결과표명,재일정조건하접지공취물재수중능구형성구형적은정효속,CMC치화효속립경수착공취물중소수성취유산(PLA)련단함량적증가이감소.
β-Cyclodextrin/poly(lactide)(β-CD -g-PLA) graft copolymer micelles were prepared in water.The fluorescence technique was used to determine the critical micelle concentrations (CMC) of copolymer micelles.The diameter and distribution of micelles were characterized by dynamic light scattering(DLS) and its shape was observed by transmission electron microscopy(TEM).The results showed that the round nano-micells were formed steadily by these copolymers in water.The CMC of copolymer solution and the size of micell were reduced with the increasing of the proportion of hydrophobic parts.
