When adulterated with polyvinyl alcohol(PVA),the fabricated film with good swelling property was formed which can suspend on water and slowly release XF(a chemical to be published).

• 以聚乙烯醇(PVA)掺杂,能制作出在水面悬浮且溶胀的膜,并可以缓慢释放出化学物质XF。