Phase behaviour of polymer-grafted DPPC membranes for drug delivery systems design

被引:31
|
作者
Pappalardo, M
Milardi, D
Grasso, D
La Rosa, C
机构
[1] Univ Catania, Dipartimento Sci Chim, I-95125 Catania, Italy
[2] CNR, Sez Catania, Ist Biostrutture & Bioimmagini, I-95125 Catania, Italy
关键词
DPPC dispersions; drug delivery systems; phase behaviour; polymer grafted lipids;
D O I
10.1007/s10973-005-0669-7
中图分类号
O414.1 [热力学];
学科分类号
摘要
DPPC dispersions containing DPPE with attached PEG of molecular masses 350, 2000 and 5000 were investigated by DSC in order to determine their phase behaviour and potential use as drug delivery systems. In comparison with previously obtained ESR data, DSC provided a definition of the lipid composition and temperature at which the vesicles are in a liquid crystalline phase. For DPPC DPPE-PEG 350 the composition range is at molar fractions 0<(chi PEG350)< 0.5. For DPPC DPPE - PEG 2000 the range of applicability is 0<(chi PEG2000)< 0.07 and for DPPC/DPPE - PEG 5000 system it is 0<(chi PEG5000)< 0.05.
引用
收藏
页码:413 / 418
页数:6
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