Cov khoom siv uas lwj tau yog cov khoom siv uas cov kab mob me me (piv txwv li, cov kab mob me me, cov pwm, thiab cov algae, thiab lwm yam) tuaj yeem lwj tag nrho ua cov khoom sib xyaw ua ke uas tsis muaj molecular ntau nyob rau hauv cov xwm txheej ib puag ncig uas tsim nyog thiab pom tseeb. Tam sim no, lawv feem ntau muab faib ua plaub pawg tseem ceeb: polylactic acid (PLA), PBS, polylactic acid ester (PHA) thiab polylactic acid ester (PBAT).
PLA muaj kev nyab xeeb ntawm tsiaj txhu, kev puas tsuaj ntawm tsiaj txhu, cov khoom siv kho tshuab zoo thiab kev ua tiav yooj yim, thiab siv dav hauv kev ntim khoom, textile, zaj duab xis yas ua liaj ua teb thiab kev lag luam biomedical polymer.
PBS siv tau rau hauv zaj duab xis ntim khoom, cov khoom siv rooj tog, cov khoom ntim ua npuas ncauj, cov fwj siv txhua hnub, cov fwj tshuaj, cov yeeb yaj kiab ua liaj ua teb, cov tshuaj tua kab uas tso qeeb qeeb thiab lwm yam teb.
PHA siv tau rau hauv cov khoom siv pov tseg, cov khaub ncaws phais rau cov khoom siv kho mob, cov hnab ntim khoom thiab cov hnab ua compost, cov xov kho mob, cov khoom siv kho, cov ntaub qhwv, cov koob txhaj tshuaj orthopaedic, cov yeeb yaj kiab tiv thaiv kev nplaum thiab cov stents.
PBAT muaj qhov zoo ntawm kev ua tau zoo ntawm zaj duab xis thiab kev yooj yim tshuab zaj duab xis, thiab siv dav hauv cov teb ntawm cov zaj duab xis ntim pov tseg thiab cov zaj duab xis ua liaj ua teb.