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低晶聚乙烯醇-丙烯酸甲酯(PVA-MA)共聚物具有较好的流动性与可压性,可作为盐酸苯丙醇胺(PPA·HCl)缓释片的基质。共聚物的结晶性会影响片剂的释放度。低晶共聚物经热处理后会转变成结晶共聚物。由
Low crystalline polyvinyl alcohol-methyl acrylate (PVA-MA) copolymer has good fluidity and compressibility, which can be used as matrix of PPA · HCl hydrochloride sustained-release tablets. The crystallinity of the copolymer will affect the release of the tablets. Low-crystalline copolymer after heat treatment will be transformed into crystalline copolymer. by