IHauv peb lub neej txhua hnub, cov khoom yas muaj nyob txhua qhov chaw. Txawm li cas los xij, cov teeb meem ib puag ncig uas tshwm sim los ntawm cov yas ib txwm muaj tau ua rau tib neeg nrhiav lwm txoj hauv kev uas ruaj khov dua. Qhov no yog qhov uas cov yas bioplastics tuaj yeem ua si. Ntawm lawv, cov hmoov txhuv nplej siab ua lub luag haujlwm tseem ceeb ua ib feem ntawm cov yas bioplastics. Yog li, lub luag haujlwm ntawmpob kws hmoov txhuv nplej siab hauv bioplastics?
COV NTAUB NTAWV
1. Cov Bioplastics yog dab tsi?
Cov yas ua los ntawm cov khoom siv rov ua dua tshiab xws li cov nroj tsuag lossis cov kab mob me me. Tsis zoo li cov yas ib txwm muaj, cov yas ua los ntawm cov khoom siv rov ua dua tshiab, yog li ua rau muaj kev cuam tshuam tsawg dua rau ib puag ncig. Cov hmoov txhuv nplej siab, ntawm lawv, feem ntau yog siv ua ib qho ntawm cov khoom tseem ceeb hauv cov yas ua los ntawm cov nroj tsuag.
2. Lub Luag Haujlwm ntawm Pob Kws Hmoov Hauv Bioplastics
Hmoov pob kws feem ntau ua haujlwm peb yam tseem ceeb:
Pob kws ua lub luag haujlwm tseem ceeb hauv kev txhim kho, ruaj khov thiab txhim kho cov khoom ua haujlwm hauv bioplastics. Nws yog ib qho polymer uas tuaj yeem ua ke nrog lwm cov polymers biodegradable lossis plasticizers los tsim cov qauv ruaj khov. Los ntawm kev ntxiv cov khoom ntxiv rau pob kws, qhov nyuaj, kev ywj pheej thiab kev puas tsuaj ntawm bioplastics tuaj yeem hloov kho, ua rau lawv haum rau ntau yam kev siv.Txhim Kho Lub Zog Mechanical: Kev suav nrog cov hmoov txhuv nplej siab tuaj yeem txhim kho lub zog thiab lub zog tensile ntawm bioplastics, ua rau lawv ruaj khov dua.Txhim Kho Kev Ua Haujlwm: Qhov muaj cov hmoov txhuv nplej siab ua rau cov bioplastics yooj yim dua thaum lub sijhawm ua tiav, pab txhawb kev tsim cov khoom sib txawv.
Antxiv rau, cov hmoov txhuv nplej siab muaj qhov zoo heev biodegradability. Nyob rau hauv cov xwm txheej ib puag ncig tsim nyog, cov kab mob me me tuaj yeem rhuav cov hmoov txhuv nplej siab ua cov organic yooj yim, thaum kawg ua tiav kev puas tsuaj tag nrho. Qhov no tso cai rau bioplastics rov ua dua tshiab tom qab siv, txo cov pa phem ib puag ncig.Txawm li cas los xij, hmoov txhuv nplej siab kuj muaj qee qhov teeb meem. Piv txwv li, nyob rau hauv qhov kub thiab txias lossis noo noo ntau, cov bioplastics feem ntau poob qhov ruaj khov, cuam tshuam rau lawv lub neej thiab kev ua tau zoo. Txhawm rau daws qhov teeb meem no, cov kws tshawb fawb tab tom ua haujlwm nrhiav cov khoom ntxiv tshiab lossis txhim kho cov txheej txheem tsim khoom kom txhim kho qhov tiv taus cua sov thiab noo noo ntawm bioplastics.
3. Kev siv cov hmoov pob kws hauv cov khoom siv bioplastics tshwj xeeb
TDaim ntawv thov ntawm cov hmoov txhuv nplej siab hauv cov khoom siv bioplastics tshwj xeeb sib txawv nyob ntawm cov khoom xav tau thiab kev siv cov khoom kawg. Nov yog ob peb qho piv txwv:Polylactic Acid (PLA): PLA yog ib yam khoom siv bioplastic uas feem ntau yog los ntawm cov hmoov txhuv nplej siab. Cov hmoov txhuv nplej siab ua haujlwm ua cov khoom siv rau kev tsim cov kua qaub lactic, uas tom qab ntawd raug polymerized los ua PLA. PLA ntxiv cov hmoov txhuv nplej siab ua rau pom cov khoom siv kho tshuab zoo dua, xws li lub zog tensile thiab kev tiv thaiv kev cuam tshuam. Ntxiv mus, kev ntxiv cov hmoov txhuv nplej siab tuaj yeem txhim kho kev puas tsuaj ntawm PLA, ua rau nws tsim nyog rau cov ntawv thov uas muaj kev txhawj xeeb txog ib puag ncig tseem ceeb, xws licov riam siv ib zaug xwb, cov khoom ntim khoom noj, thiab cov yeeb yaj kiab mulch ua liaj ua teb.
Polyhydroxyalkanoates (PHA)PHA yog lwm hom bioplastic uas siv tau los ntawm kev siv cov hmoov txhuv nplej ua cov pa roj carbon. Cov hmoov txhuv nplej yog cov kab mob me me uas tau fermented los tsim cov polyhydroxybutyrate (PHB), uas yog ib hom PHA. Cov PHA uas muaj hmoov txhuv nplej ua rau muaj kev ruaj khov zoo dua thiab muaj cov khoom siv kho tshuab zoo dua. Cov bioplastics no siv tau rau ntau yam lag luam, suav nrog kev ntim khoom, cov khoom siv kho mob, thiab kev ua liaj ua teb.
Cov Khoom Siv Bioplastics Uas Muaj Hmoov Nplej:Muaj tej lub sij hawm, cov hmoov pob kws raug ua tiav ncaj qha mus rau hauv cov yas bioplastics yam tsis tas yuav muaj cov kauj ruam polymerization ntxiv. Cov yas bioplastics uas muaj hmoov pob kws feem ntau muaj cov hmoov pob kws sib xyaw, cov khoom yas, thiab cov khoom ntxiv los txhim kho kev ua haujlwm thiab cov khoom siv kawg. Cov yas bioplastics no siv rau hauv cov ntawv thov xws li cov hnab pov tseg, cov thawv zaub mov, thiab cov tais diav pov tseg.
Kev sib xyaw nrog lwm cov Polymers uas lwj tau:Cov hmoov pob kws kuj tseem tuaj yeem sib xyaw nrog lwm cov polymers uas lwj tau, xws li polyhydroxyalkanoates (PHA), polycaprolactone (PCL), lossis polybutylene adipate-co-terephthalate (PBAT), los tsim cov yas bioplastics nrog cov khoom tshwj xeeb. Cov kev sib xyaw no muab qhov sib npaug ntawm lub zog kho tshuab, kev ywj pheej, thiab kev lwj tau, ua rau lawv haum rau ntau yam kev siv xws li kev ntim khoom mus rau kev ua liaj ua teb.
4. Xaus Lus
TLub luag haujlwm ntawm cov hmoov txhuv nplej siab hauv cov khoom siv bioplastics mus dhau qhov kev txhim kho kev ua tau zoo; nws kuj pab txo qhov kev vam khom rau cov yas roj av ib txwm muaj, tsav tsheb tsim cov khoom siv zoo rau ib puag ncig. Nrog kev nce qib hauv thev naus laus zis, peb xav tias yuav pom ntau cov khoom siv bioplastic tshiab raws li cov peev txheej rov ua dua tshiab xws li hmoov txhuv nplej siab.Hauv kev xaus, hmoov txhuv nplej siab ua lub luag haujlwm ntau yam hauv cov khoom siv bioplastics, tsis yog tsuas yog txhim kho qhov ruaj khov ntawm cov yas xwb tab sis kuj txhawb nqa lawv cov biodegradability, yog li txo qhov cuam tshuam rau ib puag ncig. Nrog rau kev nce qib ntawm thev naus laus zis thiab kev tsim kho tshiab tas mus li, cov khoom siv bioplastics tau npaj los ua lub luag haujlwm loj dua hauv kev coj ntau yam txiaj ntsig rau peb lub ntiaj teb ib puag ncig.
