Siyabonga ngokuvakashela i-Nature.com.Inguqulo yesiphequluli oyisebenzisayo inosekelo olulinganiselwe lwe-CSS.Ukuze uthole ulwazi olungcono kakhulu, sincoma ukuthi usebenzise isiphequluli esibuyekeziwe (noma ukhubaze i-Compatibility Mode ku-Internet Explorer).Okwamanje, ukuze siqinisekise ukwesekwa okuqhubekayo, sizonikeza isayithi ngaphandle kwezitayela ne-JavaScript.
Kulolu cwaningo, amafilimu e-biodegradable athuthukiswa ngokusekelwe ku-chitosan (CH) ehlanganiswe ngamafutha abalulekile e-thyme (TEO) anezithasiselo ezihlukahlukene ezihlanganisa i-zinc oxide (ZnO), i-polyethylene glycol (PEG), i-nanoclay (NC) ne-calcium.I-Chloride (CaCl2) kanye nokugqamisa ikhwalithi ye-kale ngemuva kokuvuna uma isiqandisi.Imiphumela ibonisa ukuthi ukufakwa kwe-ZnO/PEG/NC/CaCl2 kumafilimu asekelwe ku-CH kunciphisa kakhulu izinga lokudluliswa komhwamuko wamanzi, kukhulisa amandla okunyakazisa, futhi liyancibilika emanzini futhi liyabola ngokwemvelo.Ngaphezu kwalokho, amafilimu asekelwe ku-CH-TEO ahlanganiswe ne-ZnO/PEG/NC/CaCl2 asebenza kahle kakhulu ekwehliseni isisindo somzimba, ukugcina izinto eziqinile ezincibilikayo, i-tittable acidity, nokugcina okuqukethwe kwe-chlorophyll, futhi abonisa i-a* ephansi, evimbela ukukhula kwamagciwane., ukubukeka kanye nezimfanelo ze-organoleptic zeklabishi zigcinwa izinsuku ezingu-24 uma kuqhathaniswa ne-LDPE namanye amafilimu abolayo.Imiphumela yethu ibonisa ukuthi amafilimu asuselwe ku-CH anothiswe nge-TEO kanye nezithasiselo ezifana ne-ZnO/CaCl2/NC/PEG ayindlela esimeme, ehambisana nemvelo, futhi esebenza ngempumelelo yokugcina ishalofu lokuphila kweklabishi uma efrijini.
Izinto zokupakisha ze-polymeric zokwenziwa ezitholakala ku-petroleum sekuyisikhathi eside zisetshenziswa embonini yokudla ukuze kuqinisekiswe ikhwalithi nokuphepha kwemikhiqizo ehlukahlukene yokudla.Izinzuzo zezinto ezinjalo zendabuko zibonakala ngenxa yokulula kokukhiqiza, izindleko eziphansi kanye nezakhiwo ezinhle kakhulu zokuvimbela.Kodwa-ke, ukusetshenziswa nokulahlwa okukhulu kwalezi zinto ezingaboli kahle kuzobhebhethekisa inkinga yokungcoliswa kwemvelo ekhulayo.Kulokhu, ukuthuthukiswa kwezinto zokupakisha zemvelo zokuvikela imvelo kuye kwaba ngokushesha eminyakeni yamuva.Lawa mafilimu amasha awanabo ubuthi, ayabola, ayasimama futhi ayahambisana1.Ngaphezu kokungabi nobuthi futhi ahambisana ne-biocompatible, lawa mafilimu asekelwe kuma-biopolymers emvelo angathwala ama-antioxidants ngakho-ke awabangeli noma yikuphi ukungcoliswa kokudla okungokwemvelo, okuhlanganisa ukucwiliswa kwezithasiselo ezifana nama-phthalates.Ngakho-ke, lawa ma-substrates angasetshenziswa njengenye indlela esebenzayo kumapulasitiki endabuko asekelwe ku-petroleum njengoba anokusebenza okufanayo ekufakweni kokudla3.Namuhla, ama-biopolymers atholakala kumaprotheni, ama-lipids nama-polysaccharides athuthukiswe ngempumelelo, okuwuchungechunge lwezinto ezintsha zokupakisha ezinobungani bemvelo.I-Chitosan (CH) isetshenziswa kakhulu ekufakweni kokudla, okuhlanganisa ama-polysaccharides afana ne-cellulose nesitashi, ngenxa yekhono layo lokubumba ifilimu elilula, i-biodegradability, i-oxygen engcono kanye nokungafinyeleli komphunga wamanzi, kanye nesigaba esihle samandla emishini yama-macromolecules emvelo avamile.,5.Kodwa-ke, amandla aphansi e-antioxidant kanye ne-antibacterial amafilimu e-CH, okuyimibandela eyinhloko yamafilimu okupakisha ukudla asebenzayo, anciphisa amandla awo6, ngakho-ke ama-molecule engeziwe afakwe kumafilimu e-CH ukuze adale izinhlobo ezintsha ezisebenza ngokufanele.
Amafutha abalulekile atholakala ezitshalweni angafakwa kumafilimu e-biopolymer futhi angadlulisela izakhiwo zokulwa ne-antioxidant noma ezilwa namagciwane ezinhlelweni zokupakisha, eziwusizo ekwandiseni isikhathi seshelufu sokudla.Amafutha abalulekile e-Thyme yiwona afundwa kakhulu futhi asetshenziswa kakhulu amafutha abalulekile ngenxa yezakhiwo zawo zokulwa namagciwane, ukulwa nokuvuvukala kanye ne-antifungal.Ngokusho kokwakhiwa kwamafutha abalulekile, kuhlonzwe izinhlobo ezahlukene ze-thyme chemotypes, okuhlanganisa i-thymol (23-60%), i-p-cymol (8-44%), i-gamma-terpinene (18-50%), i-linalool (3-4%). ).%) kanye ne-carvacrol (2-8%)9, noma kunjalo, i-thymol inomphumela onamandla we-antibacterial ngenxa yokuqukethwe kwe-phenols kuyo10.Ngeshwa, ukufakwa kwamafutha abalulekile ezitshalo noma izithako zawo ezisebenzayo kumatrices e-biopolymer kunciphisa kakhulu amandla omshini amafilimu e-biocomposite atholiwe11,12.Lokhu kusho ukuthi izinto zokupakisha namafilimu enziwe ngepulasitiki aqukethe amafutha abalulekile ezitshalo kumele abhekane nokwelashwa okuqinile okwengeziwe ukuze kuthuthukiswe izakhiwo zemishini zokupakishwa kwawo kokudla.
Isikhathi sokuthumela: Oct-25-2022