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有一种奇特的物质,它不仅不需要通常橡胶那些交联过程,就具有一般大分子弹性体的各种物性,而且含水量高达80—90％。这就是八十年代初日本科学家南部昌生偶尔发现并报道的聚乙烯醇(PVA)水溶胶,又称高含水弹性体或高含水胶。现在,这种高含水胶特殊的制备方法、结构和性质已引起人们的关注。其发现有助于进一步研究高分子的结构与性能,也有希望开发新一代的医用材料。
There is a peculiar substance that not only does not require the usual rubber cross-linking processes, but has the properties of a typical macromolecular elastomer with a water content of up to 80-90%. This is the polyvinyl alcohol (PVA) hydrosol, also known as high water-containing elastomer or high water-containing gum, occasionally discovered and reported by Chang Sang, a Japanese scientist in the early 1980s. Nowadays, special preparation methods, structures and properties of such high water-containing gums have drawn people’s attention. Its findings help to further study the structure and properties of polymers, but also hope to develop a new generation of medical materials.