Izikhwama zokupakisha eziwohlokayo zisho ukuthi zingehliswa, kodwa ukuwohloka kungahlukaniswa ngokuthi "okubi" futhi "okungawohloki ngokuphelele".
Ukuwohloka ngokwengxenye kubhekisela ekwengezweni kwezithasiselo ezithile (njengesitashi, isitashi esishintshiwe noma enye i-cellulose, ama-photosensitizers, ama-biodegradants, njll.) phakathi nenqubo yokukhiqiza ukuze izinze.
Ngemva kokuwa, kulula ukwehlisa amapulasitiki endaweni yemvelo.
Ukuwohloka ngokuphelele kusho ukuthi yonke imikhiqizo yepulasitiki yonakala ibe amanzi kanye nesikhutha. Izinto ezingavuthiwe eziyinhloko zale nto ewohlokayo ngokuphelele icutshungulwa ibe yi-lactic acid (ummbila, umdumbula, njll.), okuyi-lactic acid.
I-PLA. I-Polylactic acid (PLA) iwuhlobo olusha lwe-bio-based and renewable biodegradable material. Izinto ezisetshenziswayo zesitashi ziyakhishwa ukuze kutholwe i-glucose, esuke ivutshelwa yi-glucose nezinye izinhlobo.
Iguqulwa ibe yi-lactic acid ephezulu, bese kuthi i-polylactic acid yesisindo samangqamuzana ihlanganiswe ngendlela yokuhlanganisa amakhemikhali. Ine-biodegradability enhle futhi ingasetshenziswa ama-microorganisms emhlabeni wemvelo.
Yehliswa ngokuphelele ngaphansi kwezimo ezithile futhi ekugcineni ikhiqize isikhutha namanzi ngaphandle kokungcolisa imvelo. Lokhu kuzuzisa kakhulu ekuvikelweni kwemvelo futhi kuqashelwa njengempahla ehambisana nemvelo. Okwamanje izikhwama zokupakisha ezonakaliswa ngokuphelele
Izinto eziyinhloko ezisekelwe ku-bio zenziwe nge-PLA+PBAT, engachithwa ngokuphelele emanzini kanye ne-carbon dioxide ezinyangeni ezingu-3-6 ngaphansi kwesimo sokwenza umquba (ama-60-70 degrees), okungangcolisi imvelo.
Kungani ungeza i-PBAT Shenzhen Jiuxinda lapha ukuze ikutshele ukuthi i-PBAT iyi-copolymer ye-dicarboxylic acid, i-1,4-butanediol, ne-terephthalic acid. Iwuhlobo lwe-biodegradable ngokugcwele.
I-polymer enamakha e-aliphatic ehlanganiswe ngamakhemikhali, i-PBAT inokuguquguquka okuhle kakhulu futhi ingasetshenziselwa ukukhishwa kwefilimu, ukucutshungulwa kokuvuthela, ukumbozwa kwe-extrusion nokunye ukucubungula ukubumba. I-PLA ne-PBAT
Inhloso yokuxuba ukuthuthukisa ukuqina kwe-PLA, ukubola kwe-biodegradation kanye nenqubo yokubumba. I-PLA ne-PBAT azihambelani, ngakho ukukhetha isifanelana esifanelekile kungenza ukusebenza kwe-PLA kuphawuleke.ngcono.
Isikhathi sokuthumela: Sep-03-2021