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本文介绍一种制备双层结构聚乙烯醇(PVA)微球的新方法。此方法包括聚乙烯乙酸酯(PVAc)悬浮液的逐步皂化和用戊二醛使PVA核和外壳逐步交联两步过程。用此方法制备的PVA微球具有不同程度的高度交联薄外壳和低度交联的内核。除了对PVA微球进行溶胀平衡测试外,还进行了微球的水溶胀试
This article describes a new method for preparing double-layered polyvinyl alcohol (PVA) microspheres. This method involves the gradual saponification of a polyvinyl acetate (PVAc) suspension and a two-step process of gradual crosslinking of the PVA core and the shell with glutaraldehyde. PVA microspheres prepared by this method have different degrees of highly crosslinked thin shell and low crosslinked core. In addition to the swelling of PVA microspheres balance test, but also carried out microspheres water swelling test