Cov ntaub ntawv degradable feem ntau tuaj yeem muab faib ua plaub pawg: photodegradable plastics, biodegradable plastics, photo/biodegradable plastics thiab water-degradable plastics.Photodegradable plastics yog photosensitizers sib xyaw rau hauv cov yas.Nyob rau hauv qhov kev txiav txim ntawm tshav ntuj, cov yas maj mam decompose.Tab sis nws qhov tsis zoo yog tias lub sijhawm degradation cuam tshuam los ntawm tshav ntuj thiab huab cua ib puag ncig, yog li nws tswj tsis tau.Biodegradable plastics xa mus rau cov yas uas tuaj yeem decomposed rau hauv cov tshuaj qis molecular los ntawm cov kab mob uas muaj nyob hauv cov xwm txheej, xws li kab mob, pwm, thiab algae nyob rau hauv qee yam mob.Cov yas zoo li no yooj yim rau khaws thiab thauj, thiab muaj ntau yam kev siv.Lub teeb / biodegradable plastics yog cov yas uas sib txuas cov yam ntxwv ntawm lub teeb-degradable plastics thiab biodegradable plastics.Tam sim no, biodegradable plastics tsim nyob rau hauv kuv lub teb chaws feem ntau yog biopolyesters xws li polylactic acid (PLA), polyhydroxyalkanoate (PHA), carbon dioxide copolymer (PPC) thiab hais txog.Polylactic acid (PLA) yog tsim los ntawm polymerization ntawm lactide monomers muab rho tawm los ntawm cov nroj tsuag qab zib, thiab tuaj yeem degraded tag nrho rau hauv dej thiab carbon dioxide nyob rau hauv industrial composting.Polyhydroxyalkanoates (PHA) yog aliphatic copolyesters nrog cov qauv sib txawv ua ke los ntawm fermentation ntawm ntau qhov chaw carbon los ntawm cov kab mob.Lawv tuaj yeem tsis tsuas yog siv rau hauv cov khoom ntim, cov yeeb yaj kiab ua liaj ua teb, thiab lwm yam, tab sis kuj tseem siv dav hauv cov tshuaj, tshuaj pleev ib ce, thiab tsiaj pub tsiaj thiab lwm yam.Cov dej-degradable plastics yog cov yas uas tuaj yeem yaj hauv dej vim tias muaj cov khoom nqus dej ntxiv.Nrog rau txoj kev loj hlob ntawm niaj hnub biotechnology, biodegradable plastics tau dhau los ua qhov chaw kub tshiab hauv kev tshawb fawb thiab kev loj hlob.

Hauv Suav teb, cov khoom siv biodegradable tam sim no tsis paub tab txaus, thiab yuav muaj qee yam additives.Yog tias cov additives no ntxiv, cov khoom siv yas yuav tsis ua tiav cov txiaj ntsig ntawm biodegradation.Yog tias nws tsis ntxiv, cov khoom yas no yuav decompose nyob rau hauv ib qho xwm txheej, tshwj xeeb tshaj yog nyob rau hauv qhov chaw kub, yog li nws yog ib qho nyuaj rau khaws cia.
Tsis tas li ntawd, siv cov khoom siv biodegradable los ua cov khoompwmxav tau kev hloov kho tshwj xeeb.