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用可见－紫外分光光度法测定聚乙烯醇（ＰＶＡ）－白及胶混合物和单纯聚乙烯醇分别与氢溴酸后马托品制得的载药膜Ａ和Ｂ的药物溶出度，结果表明：Ａ膜的Ｔ５０和Ｔｄ值均大于Ｂ膜。说明白及胶的加入，不但使膜质柔软，而且可以改进ＰＶＡ膜的药物缓释性能
The drug dissolution of drug-loaded films A and B prepared from polyvinyl alcohol (PVA) -white and plastic mixture and pure polyvinyl alcohol and hormo-hydrobromide were measured by visible-UV spectrophotometry. The results showed that: A membrane T50 and Td values are greater than the B membrane. Explain the addition of white and plastic, not only make the film soft, but also can improve the drug release properties of PVA film