I-Cellulose ethers iyisigaba esibalulekile se-polymer compounds esetshenziswa kabanzi ekwakheni, ekugqokeni, ekwemithi nakwezinye izinkambu. Isakhiwo salo samakhemikhali esiyingqayizivele kanye nezakhiwo zomzimba zinikeza izinzuzo ezibalulekile ekuthuthukiseni ukunamathela kanye nezakhiwo zefilimu.
1. Izici eziyisisekelo ze-cellulose ethers
I-Cellulose ether iwuhlobo lwe-polymer encibilika emanzini etholwe ngokuguqulwa kwamakhemikhali kwe-cellulose yemvelo. Isakhiwo sayo esiyisisekelo iketango le-macromolecular elakhiwe amayunithi e-β-D-glucose axhunywe ngamabhondi e-β-1,4-glycosidic. Ama-cellulose ethers ajwayelekile ahlanganisa i-hydroxypropyl methylcellulose (HPMC), i-methylcellulose (MC), i-carboxymethylcellulose (CMC), njll. .
2. Indlela yokuthuthukisa ukunamathela
Khulisa ukunamathela kobuso obuhlangene: I-Cellulose ether ingenza isixazululo esiqinile se-colloidal kwisixazululo. Lesi sixazululo se-colloidal singasatshalaliswa ngokulinganayo ebusweni be-substrate, sigcwalise ama-micropores angaphezulu, futhi sithuthukise ukunamathela kobuso. Isibonelo, ukwengeza i-HPMC ezintweni zokwakha kungathuthukisa ukunamathela phakathi kodaka nezinto eziyisisekelo, okwenza udaka lunamathele ngokuqinile odongeni.
Thuthukisa ukumanzisa kwendawo engaphansi: I-Cellulose ether ine-hydrophilicity enhle futhi ingathuthukisa umphumela wokumanzisa wesisombululo endaweni engaphansi, ngaleyo ndlela ithuthukise ukunamathela. Ukumanzisa kungenye yezinto ezibalulekile ezithinta ukunamathela. Ngokuthuthukisa ukumanzisa, ama-cellulose ethers angakhuthaza izinto zokumboza ukuthi zibemanzi kangcono futhi zimboze indawo engaphansi.
Thuthukisa ukushumeka komshini: Ifilimu elakhiwe i-cellulose ether phakathi nenqubo yokomisa inezinga elithile lokuguquguquka namandla, okuvumela i-cellulose ether ukuthi yakhe ukushumeka komshini ebusweni be-substrate ukuze kuthuthukiswe ukunamathela. Lo mphumela we-mechanical interlocking ubaluleke kakhulu ekugqokeni nasekunamatheleni, okungathuthukisa ngokuphumelelayo izakhiwo zokunamathela zezinto.
3. Indlela yokuthuthukisa izakhiwo zokwenza amafilimu
Izakhiwo ezinhle kakhulu zokwenza ifilimu: I-Cellulose ether ingakha isixazululo se-viscosity efanayo ngemva kokuncibilika emanzini, futhi ingenza ifilimu esobala eqhubekayo ngemva kokumiswa. Le filimu inamandla amahle emishini kanye nokuguquguquka, ingakwazi ukumboza ngokuphumelelayo ubuso be-substrate futhi ithuthukise izakhiwo zefilimu. Ezimbotsheni nasezindaweni zemithi, izakhiwo zefilimu ze-cellulose ethers zibaluleke kakhulu.
Ukugcinwa kwamanzi okuhle: I-Cellulose ether inokugcinwa kwamanzi okuphawulekayo, okungagcina umswakama ofanele ngesikhathi senqubo yokubunjwa kwefilimu futhi kuvimbele ukukhubazeka kokwakheka kwefilimu okubangelwa ukomiswa ngokweqile. Ukugcinwa kwamanzi kusiza ukwakha ungqimba lwefilimu olufana noluminyene, ukuvimbela ukuqhekeka nokuxebuka kwefilimu. Ezakhiweni zokwakha kanye nezingubo zokugqoka, izindawo zokugcina amanzi ze-cellulose ethers zingathuthukisa kakhulu ukusebenza kokwakhiwa kwezinto kanye nekhwalithi yokugcina yokwenza ifilimu.
Lawula isivinini sokumisa: I-Cellulose ether ingalungisa izinga lokuhwamuka kwamanzi ngesikhathi senqubo yokubunjwa kwefilimu, okwenza inqubo yokwakheka kwefilimu ilawuleke kakhulu. Ngokulawula isivinini sokumisa, i-cellulose ether ingavimbela ukugxilwa kokucindezeleka okubangelwa ukomiswa ngokushesha kwesendlalelo sefilimu, ngaleyo ndlela kuthuthukise ikhwalithi nokuzinza kwefilimu. Embonini yezemithi, ama-cellulose ethers avame ukusetshenziselwa ukugqoka izidakamizwa, ezingalawula ngokuphumelelayo isivinini sokumisa sengqimba yokugqoka futhi siqinisekise ukufana nobuqotho besendlalelo sokumboza.
4. Izibonelo zohlelo lokusebenza
Udaka Lokwakha: Ukwengeza i-HPMC kudaka lokwakha kungathuthukisa kakhulu ukunamathela nokusebenza kokwakhiwa kodaka. Ngemiphumela yayo yokuqina nokugcina amanzi, i-HPMC ithuthukisa ukunamathela kwesixhumi esibonakalayo phakathi kodaka nezinto eziyisisekelo, futhi ithuthukisa izakhiwo zefilimu zodaka, okwenza udaka lube bushelelezi phakathi nenqubo yokwakha futhi luqine ngemva kokwakhiwa kwefilimu.
Upende: Ukwengeza i-cellulose ether kupende osuselwe emanzini kungathuthukisa izinga lokulinganisa nokwenza ifilimu likapende, kwenze ukumboza kube bushelelezi futhi kube bushelelezi. Ngezakhiwo zayo ezinhle kakhulu zokwenza ifilimu nokugcinwa kwamanzi, i-cellulose ether iqinisekisa ukuthi ukumboza kwakha ungqimba lwefilimu oluminyene futhi olufana ngesikhathi senqubo yokumisa, ukuthuthukisa ukunamathela nokuqina kokugqoka.
Ukufakwa kwemithi: Enqubweni yokumboza yemithi, ama-cellulose ether afana ne-HPMC avame ukusetshenziselwa ukwakha isendlalelo sokumboza. Izakhiwo ezinhle zokwakha ifilimu ye-cellulose ether kanye nekhono lokulawula isivinini sokumisa kungaqinisekisa ukufana nobuqotho besendlalelo sokumboza futhi kuthuthukise ukuzinza nokukhulula izici zomuthi.
I-Cellulose ether inemiphumela ebalulekile ekuthuthukiseni ukunamathela kanye nezakhiwo zokwakha ifilimu ngokujiya kwayo, ukugcina amanzi, kanye nezakhiwo zefilimu. Ukusetshenziswa kwayo okubanzi ekwakhiweni, okokumboza, kwezemithi nakweminye imikhakha kufakazela ngokugcwele indima yayo ebalulekile ekuthuthukiseni izakhiwo zokunamathela kanye nokwenziwa kwefilimu. Ngokuzayo, ngokuthuthukiswa okuqhubekayo kobuchwepheshe bokukhiqiza i-cellulose ether kanye nokuthuthukiswa kwemikhiqizo emisha ye-cellulose ether, i-cellulose ether izobonisa amathemba okusebenza okubanzi emikhakheni eyengeziwe.
Isikhathi sokuthumela: Jul-13-2024