摘要
OBJECTIVE: To synthesize and analyze the novel enteric-coating material HPMCAS. METHODS: The structure and properties of HPMCAS were analyzed by IR, UV, TGA and chemical analysis. The solubility of HPMCAS in organic solvents was tested. The viscosity curves in the acetone-ethanol-water system, tensile strength and ultimate elongation of free films prepared by HPMCAS were determined, and HPMCAS was compared with AS-LG. RESULTS: The contents of acidic succinyl groups and acetyl groups in HPMCAS were related with the addition of two anhydrides. The dichloromethane-ethanol system was the excellent solvent for HPMCAS. HPMCAS was stable below 200 T and lose weight quickly over 200 °C. CONCLUSION: The physical and chemical properties of HPMCAS were almost the same as those of AS-LG.
| 源语言 | 英语 |
|---|---|
| 页(从-至) | 846-849 |
| 页数 | 4 |
| 期刊 | Chinese Pharmaceutical Journal |
| 卷 | 40 |
| 期 | 11 |
| 出版状态 | 已出版 - 6月 2005 |
指纹
探究 'Characterization of hydroxypropyl methylcellulose acetate succinate' 的科研主题。它们共同构成独一无二的指纹。引用此
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