THE EFFECT OF PLASTICIZERS ON COMPATIBILITY, MECHANICAL-PROPERTIES, AND ADHESION STRENGTH OF DRUG-FREE EUDRAGIT-E FILMS

被引:57
|
作者
LIN, SY [1 ]
LEE, CJ [1 ]
LIN, YY [1 ]
机构
[1] NATL TSING HUA UNIV,DEPT CHEM ENGN,HSINCHU 300,TAIWAN
关键词
EUDRAGIT-E FILM; PLASTICIZER; COMPATIBILITY; MECHANICAL PROPERTY; PEEL ADHESION TEST;
D O I
10.1023/A:1015850301214
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The use of plasticizers to affect the properties of drug-free, self-adhesive Eudragit E-100 films with higher transparency was tested for possible transdermal drug delivery. Triacetin was found to be an effective first plasticizer for Eudragit E-100 polymer. In order to improve the flexibility and adhesiveness of Eudragit E-100 film plasticized with triacetin, a more flexible and adhesive, secondary plasticizer was added. Plasticizer-polymer compatibility was evaluated by measuring transparency, surface topography, and solubility. Secondary plasticizers with a low molecular weight and a solubility parameter similar to that of Eudragit E-100 polymer and triacetin were compatible. Further, a lower molecular weight or higher concentration of the secondary plasticizers might lead to greater plasticizing action, reduce tensile strength, and increase film elongation, independent of the hydrophilicity of the plasticizer. The adhesive strength of Eudragit E-100 film under a 180-degrees peel test was also affected by the molecular weight and solubility parameter of the secondary plasticizers used. The results indicate that PEG 200, propylene glycol, diethyl phthalate, and oleic acid can serve as a secondary plasticizer to improve the transparency, flexibility, and adhesion of Eudragit E-100 film.
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页码:1137 / 1143
页数:7
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