Polyvinyl alcohol (PVA) yog ib qhov sib txig sib luag zoo uas siv tau ntau yam hauv kev lag luam xws li kab noog, khoom siv hlau, thiab khoom siv uas yuav tsum siv tom qab. Hauv kab noog, PVA siv ua kev ntxig kom muaj zog thiab nyob ntev dua. PVA kuj muaj feem ntau hauv kev tshwm sim, uas siv rau cov khoom siv cement kom zoo dua, nyob ntev dua, thiab kom tsis txuag. Tom qab ntawd, PVA kuj siv hauv kev tsim cov daim ntim uas yuav tsum siv tom qab, thap tshai rau cov khoom ntim tsha.