Polyvinyl alcohol (PVA) yog polymers uas tseem ceeb rau ntau qhov chaw tsim khoom, xws li daim ntawv, phau, thiab kev tsim kho. PVA tau siv los ua thawj rau daim ntawv thiab kev them, muab kev nyiaj sib ntxiv thiab kev ua haujlwm zoo. Nws kuj yog ib qhov tseem ceeb rau phau, uas siv los ua thawj rau kev nres tsev thiab kev tso tshuaj rau kev tshuab. Nyob hauv kev tsim kho, PVA pab txhim kho kev ua haujlwm ntawm cov khoom uas muaj cement, pab txhim kho kev ua haujlwm thiab kom tsis txhob muaj kev tshuaj ntxhiab hauv cov khoom siv ntau.