Okwamanje,izinto zokupakisha zezimonyo ezibolayoziye zasetshenziswa ekupakisheni okhilimu, izindebe zomlomo kanye nezinye izimonyo. Ngenxa yobukhulu bezimonyo ngokwazo, azidingi nje kuphela ukubukeka okuhlukile, kodwa futhi zidinga ukuba nephakheji ehlangabezana nemisebenzi yayo ekhethekile.
Isibonelo, ukungazinzi okungokwemvelo kwezinto zokusetshenziswa kwezimonyo kufana nokudla. Ngakho-ke, ukupakishwa kwezimonyo kudinga ukuhlinzeka ngezakhiwo zokuvimbela ezisebenza kahle ngenkathi kugcinwa izakhiwo zezimonyo. Ngakolunye uhlangothi, kuyadingeka ukuhlukanisa ngokuphelele ukukhanya nomoya, ukugwema ukubola komkhiqizo, nokuhlukanisa amabhaktheriya namanye ama-microorganisms ukuthi angangeni emkhiqizweni. Ngakolunye uhlangothi, kufanele futhi kuvimbele izithako ezisebenzayo ezimonyweni ukuthi zingamuncwa yizinto zokupakisha noma zisabelane nazo ngesikhathi sokugcina, okuzothinta ukuphepha kanye nekhwalithi yezimonyo.
Ngaphezu kwalokho, ukupakishwa kwezimonyo kunezidingo zokuphepha eziphezulu zezinto eziphilayo, ngoba ezithasiselweni zokupakishwa kwezimonyo, ezinye izinto eziyingozi zingase zincibilikiswe yizimonyo, ngaleyo ndlela kubangele ukuthi izimonyo zingcoliswe.
Izinto zokupakisha zezimonyo ezibolayo:
Izinto ze-PLAinokucutshungulwa okuhle kanye nokuhambisana kwezinto eziphilayo, futhi okwamanje iyinto eyinhloko yokupakisha ebolayo yezimonyo. Izinto ze-PLA ziqinile futhi zimelana nomshini, okwenza kube yinto enhle yokupakisha izimonyo eziqinile.
I-Cellulose kanye nemikhiqizo yayoyi-polysaccharides esetshenziswa kakhulu ekukhiqizweni kokupakisha futhi yi-polymer yemvelo eningi kakhulu emhlabeni. Iqukethe amayunithi e-glucose monomer axhunywe ndawonye yizibopho ze-B-1,4 glycosidic, ezivumela amaketanga e-cellulose ukuthi akhe izibopho ze-hydrogen eziqinile. Ukupakisha kwe-cellulose kufanelekile ukugcinwa kwezimonyo ezomile ezingezona ezi-hygroscopic.
Izinto zesitashiAma-polysaccharide akhiwe yi-amylose ne-amylopectin, ikakhulukazi atholakala kokusanhlamvu, umdumbula namazambane. Izinto ezisekelwe kusitashi ezitholakala kwezentengiselwano ziqukethe ingxube yesitashi namanye ama-polymer, njenge-polyvinyl alcohol noma i-polycaprolactone. Lezi zinto ezisekelwe kusitashi ezisekelwe kusitashi zisetshenziswe ezinhlobonhlobo zezicelo zezimboni futhi zingahlangabezana nezimo zokusetshenziswa kwe-extrusion, ukubumba ngomjovo, ukubumba ngokufutha, ukuvunguza ngefilimu kanye nokugqwala kokupakishwa kwezimonyo. Kufanelekela ukupakishwa kwezimonyo okomile okungena-hygroscopic.
I-Chitosaninamandla okupakisha izinto ezibolayo zezimonyo ngenxa yomsebenzi wayo wokulwa namagciwane. I-Chitosan iyi-polysaccharide ye-cationic etholakala ekususeni i-acetylation ye-chitin, etholakala kumagobolondo e-crustacean noma i-fungal hyphae. I-Chitosan ingasetshenziswa njengesembozo kumafilimu e-PLA ukukhiqiza ukupakisha okuguquguqukayo okubolayo kanye ne-antioxidant.
Isikhathi sokuthunyelwe: Julayi-14-2023
