Kev sib piv ntawm PVP thiab PVA:
Lub npe tshuaj ntawm PVP yog polyvinylpyrrolidone. Nws yog cov dej-soluble polymer compound nrog kev ua tau zoo thiab ntau yam kev siv. Nws yog cov khoom siv high-tech thiab muaj txiaj ntsig zoo-ntxiv cov khoom siv tshuaj zoo. PVP muaj peev xwm sib txuas tau zoo thiab yog yooj yim adsorbed rau ntawm qhov chaw ntawm colloidal hais los tiv thaiv cov colloid. PVP muaj lub cev muaj zog inertia zoo heev thiab biocompatibility. Nws tsis muaj khaus lossis ua xua rau ntawm daim tawv nqaij thiab qhov muag thiab tsis muaj tshuaj lom.
Suav lub npe ntawm PVA yog polyvinyl cawv. Nws yog cov dej-soluble polymer nrog ntau yam kev siv. Nws cov khoom yog nruab nrab ntawm cov yas thiab roj hmab. PVA yog ib qho tseem ceeb ntawm cov khoom siv raw khoom siv hauv kev tsim cov polyvinyl acetal, roj av resistant kav, thiab vinylon hluavtaws fibers, ntaub kho cov neeg ua hauj, emulsifiers, ntawv coatings, adhesives, thiab lwm yam. Nws yog irritating, tsim teeb meem rau lub cev tom qab nqus tau pa, noj. , los yog nqus los ntawm daim tawv nqaij, thiab khaus khaus ntawm qhov muag thiab tawv nqaij. PVA tsuas tuaj yeem siv formaldehyde ua cov kua nplaum ua kua nplaum, thiab nws muaj kev phom sij heev rau tib neeg lub cev thaum siv ntau zaus.