Izinto ezisisiseko zokungangeni manzi kunyeikhadibhodi oyile-ubungqina isetyenziselwa ukupakisha izitya ezithathwayo zenziwe ngepulp yekhemikhali egayitiweyo ngenkqubo ekhethekileyo, ize yomiswe emva kokulinganisa umphezulu. Nangona umaleko womphezulu ubulungiswa, uburhabaxa buncitshisiwe, kodwa imicu engaphezulu kwephepha isavezwe kwinani elikhulu lamaqela epolar hydroxyl ane-hydrophilicity eyomeleleyo, ukungenwa komoya okuphezulu kwephepha kunye ne-capillary phenomenon ye. iifibers, umphumo wamanzi kunye nokungena kweoli kusekuhle.
Ikhadibhodi ihlala ithatha indlela yokongeza kwi-pulp okanye ukuguqulwa komphezulu ukunika iphepha iimpawu ezikhethekileyo ezifana nokungangeni kwamanzi, i-oil-proof kunye ne-antibacterial. Ukuguqulwa komphezulu kunokwenziwa ngendlela yokwaleka. Emva kokumisa, ifilimu enezixhobo eziphezulu zomqobo zenziwe ukuze kuphuculwe iipropati ezingenamanzi kunye neoli yephepha; ukunciphisa amandla angaphezulu kunokuphucula iimpawu zokuchasana nokumanzisa kwe-substrate; ukulungiselelaiphepha eligqunyiweyongesixhobo esithile somqobo, Ngokuphucula uburhabaxa bayo bomhlaba, i-superhydrophobic kunye ne-superoleophobic effect inokufumaneka.
Amanye amaqela asebenzayo e-chitosan atshintshwa ngamaqela e-carboxymethyl ukuze enze i-carboxymethyl chitosan (CMCS), kwaye i-molecular chain inenani elikhulu le-hydroxyl, i-amino kunye ne-carboxymethyl amaqela asebenzayo, aphucula ngakumbi ukunyibilika kwamanzi kunye neepropati zokwenza ifilimu ye-CMCS. Iqela le-hydroxyl kwi-CMCS ine-polarity enamandla kwaye ine-repellency ethile kwi-oyile, ngelixa iqela le-amino lihlawuliswa ngokufanelekileyo, eliya kubhengeza iamolekyu yeoli kunye nokuthintela iamolekyu yeoli ukuba ingene kwaye ifake iphepha.
I-Polylactic acid (PLA) yenye yezona ndawo zihamba phambili kuphando lwezinto ezichithwayo kwihlabathi jikelele, ezisombulula ingxaki yokuba inkunkuma kunzima ukuyinciphisa emva kokusetyenziswa kwe-petroleum-based compounds. Iimolekyuli ze-PLA zidibaniswe kunye ne-esterification, kwaye iqela elisebenzayo lifana ne-lipophilic, kodwa iqela le-ester line-hydrophobicity enhle, ngoko ke i-PLA ingasetyenziselwa njengento ye-hydrophobic.
I-CMCS ine-oyile yokugxotha i-oyile kodwa i-hydrophilicity enamandla, ngelixa i-PLA ingenakunyibilika emanzini, kwaye i-maleko ebhityileyo eyenziwe emva kokuba i-coating inefuthe le-hydrophobic, kodwa amaqela asebenzayo kwi-chain chain ine-lipophilicity ethile. Umlinganiselo phakathi kwezi zibini ubaluleke kakhulu ekwandiseni ukuxhathisa kwamanzi kunye neoliukupakishwa kokutya okuthathayo.
Ixesha lokuposa: Nov-14-2022