Ukususela ekufikeni kweplastiki, ibisetyenziswa ngokubanzi kuzo zonke iinkalo zobomi babantu, nto leyo eyenza kube lula kakhulu kwimveliso kunye nobomi babantu. Nangona kunjalo, ngelixa ilungile, ukusetyenziswa kwayo kunye nenkunkuma kukhokelela ekungcolisekeni okunzulu kokusingqongileyo, kubandakanya ungcoliseko olumhlophe olufana nemilambo, umhlaba weefama kunye neelwandle.
I-Polyethylene (PE) yiplastiki yemveli esetyenziswa ngokubanzi kunye nenye indlela enkulu kwizinto ezinokubola.
I-PE ine-crystallinity elungileyo, iipropati zokuthintela umphunga wamanzi kunye nokumelana nemozulu, kwaye ezi zakhiwo zinokubizwa ngokuba "ziimpawu ze-PE".
Kwinkqubo yokufuna ukusombulula "ungcoliseko lweplastiki" ukusuka engcanjini, ukongeza ekufumaneni izinto ezintsha ezichasene nokusingqongileyo, indlela ebaluleke kakhulu kukufumana indawo ekhoyo kwizinto ezikhoyo ezinokuthotywa yimekobume kwaye zibe yinxalenye. zomjikelo wemveliso Iimathiriyeli zobuhlobo, ezingasindisi nje kuphela abasebenzi abaninzi kunye neendleko zempahla, kodwa ziphinde zisombulule ingxaki yangoku yongcoliseko lokusingqongileyo ngexesha elifutshane.
Iipropati zezixhobo ze-biodegradable zihlangabezana neemfuno zokusetyenziswa ngexesha lokugcinwa, kwaye emva kokusetyenziswa, zinokutshatyalaliswa kwizinto ezingenabungozi kwindalo phantsi kweemeko zendalo.
Izinto ezahlukeneyo ezigudiswa yi-biodegradable zineempawu ezahlukeneyo kwaye zineenzuzo zazo kunye nokungalunganga. Phakathi kwazo, i-PLA kunye ne-PBAT zinezinga eliphezulu lokurhweba, kwaye umthamo wabo wemveliso ukwindawo ebalulekileyo kwimarike. Phantsi kokukhuthazwa komyalelo wothintelo lweplastiki, ishishini lemathiriyeli ye-biodegradable lishushu kakhulu, kwaye iinkampani ezinkulu zeplastiki zandise imveliso yazo. Okwangoku, umthamo wemveliso yonyaka we-PLA ungaphezulu kweetoni ezingama-400,000, kwaye kulindeleke ukuba udlule iitoni ezizigidi ezi-3 kwiminyaka emithathu ezayo. Ukuya kutsho kumkhamo othile, oku kubonisa ukuba imathiriyeli ye-PLA kunye ne-PBAT zizinto ezinokuboliswa yi-biodegradable kunye nokuqondwa okuphezulu kwimarike.
I-PBS kwimathiriyeli eyonakaliswa yi-biodegradable ikwayimathiriyeli eneqondo eliphezulu lokuqondwa, ukusetyenziswa okungaphezulu, kunye netekhnoloji eqolileyo ngakumbi.
Umthamo okhoyo wemveliso kunye nokunyuka okulindelekileyo kwixesha elizayo kwimveliso yezinto eziphathekayo ezifana ne-PHA, i-PPC, i-PGA, i-PCL, njl., iya kuba yincinci, kwaye isetyenziswa kakhulu kwiindawo zoshishino. Isizathu esona sizathu kukuba ezi zixhobo ze-biodegradable zisekwinqanaba lokuqala, iteknoloji ikhulile kwaye ixabiso liphezulu kakhulu, ngoko idigri yokuqaphela ayiphezulu, kwaye okwangoku ayikwazi ukukhuphisana ne-PLA kunye ne-PBAT.
Izinto ezahlukeneyo ezigudiswa yi-biodegradable zineempawu ezahlukeneyo kwaye zineenzuzo zazo kunye nokungalunganga. Nangona bengenazo ngokupheleleyo "iimpawu ze-PE", enyanisweni, izinto eziqhelekileyo eziguquguqukayo ze-biodegradable zisisiseko se-aliphatic polyesters, njenge-PLA kunye ne-PBS, equlethe i-esters. I-PE edibeneyo, i-ester bond kwi-chain yayo ye-molecular inika i-biodegradability, kwaye i-aliphatic chain inika "iimpawu ze-PE".
Indawo yokunyibilika kunye neempawu zemishini, ukumelana nobushushu, izinga lokuthotywa, kunye neendleko ze-PBAT kunye ne-PBS zinokugubungela ngokusisiseko ukusetyenziswa kwe-PE kwishishini lemveliso elahlayo.
Izinga loshishino lwe-PLA kunye ne-PBAT liphezulu kakhulu, kwaye likwangumkhombandlela wophuhliso olunamandla kwilizwe lam. I-PLA kunye ne-PBAT zineempawu ezahlukeneyo. I-PLA yiplastiki eqinile, kwaye i-PBAT yiplastiki ethambileyo. I-PLA enefilim evuthelweyo engalunganga idityaniswa kakhulu ne-PBAT enokuqina okuhle, enokuphucula ukuqhubekeka kwefilimu evuthelweyo ngaphandle kokonakalisa iipropathi zayo zebhayoloji. ukuthotywa. Ke ngoko, akukokubaxa ukuthetha ukuba i-PLA kunye ne-PBAT ziye zaba yeyona nto iphambili kwizinto ezinokuwohloka.
Ixesha lokuposa: Feb-26-2022