Ịchụsa hydroxyethyl cellulose (HEC) bụ ọrụ chọrọ usoro a kapịrị ọnụ ka a na-agbaso, karịsịa na mgbasa ozi mmiri. Usoro mgbasa ozi na mgbasa ozi ziri ezi nwere ike hụ na mmetụta ojiji ya. A na-eji hydroxyethyl cellulose eme ihe n'ọtụtụ ebe na mkpuchi, adhesives, cosmetics, ubi mmanụ na ubi ndị ọzọ n'ihi na ọ na-eme ka ọ dịkwuo arọ, nkwụsi ike, ịmepụta ihe nkiri, moisturizing na ọrụ ndị ọzọ.
Okwu Mmalite nke Hydroxyethyl Cellulose
Hydroxyethyl cellulose bụ ether nke na-abụghị ionic cellulose ether nke na-agbaze mmiri site na mgbanwe kemịkalụ nke cellulose eke. Ọ nwere ọmarịcha solubility na mmetụta na-eme ka ahụ sie ike, ma nwee ike mepụta ngwọta na-enweghị atụ, viscous aqueous. HEC nwekwara ezigbo nnabata mmiri nnu, ya mere ọ dabara adaba maka gburugburu mmiri mmiri ma ọ bụ usoro nwere nnu. N'otu oge ahụ, ọ nwere ike ịnọgide na-eguzosi ike n'elu nnukwu pH na gburugburu acid na alkali adịghị emetụta ya.
Usoro mgbasa nke hydroxyethyl cellulose
N'ime mmiri, usoro mgbasa ozi nke hydroxyethyl cellulose na-agụnye usoro abụọ bụ isi: mgbasa mmiri na mgbasa zuru oke.
Mgbasa mmiri: Nke a bụ usoro nke na-eme ka mkpụrụ ndụ hydroxyethyl cellulose kesaa nke ọma na mmiri. Ọ bụrụ na a na-agbakwunye HEC ozugbo na mmiri, ọ ga-amịkọrọ mmiri ngwa ngwa ma mee ka ọkpụkpụ na-egbuke egbuke n'elu, nke na-egbochi mgbasa ọzọ. Ya mere, n'oge usoro mgbasa ozi, a ga-ezere ịmepụta clumps dị otú ahụ dị ka o kwere mee.
Mgbasa zuru oke: Mgbe ha gbasasịrị mmiri, mkpụrụ ndụ cellulose na-eji nwayọọ nwayọọ na-agbasa n'ime mmiri ka ha mepụta otu ngwọta. N'ozuzu, HEC agbaze nwayọọ nwayọọ na nwere ike were ọtụtụ awa ma ọ bụ ọbụna karịa, dabere na mmiri okpomọkụ, edemede ọnọdụ na cellulose urughuru size.
Mgbasa nzọụkwụ nke hydroxyethyl cellulose
Iji hụ na enwere ike ịgbasa hydroxyethyl cellulose nke ọma, a na-ejikarị usoro mgbasa ozi eme ihe:
1. Họrọ ezigbo okpomọkụ mmiri
Mmiri mmiri bụ ihe dị mkpa na-emetụta mgbasa na mgbasa nke hydroxyethyl cellulose. N'ikwu okwu n'ozuzu, mmiri oyi ma ọ bụ mmiri okpomọkụ dị n'ime ụlọ bụ ebe mgbaze kacha dabara adaba. Mmiri na-ekpo ọkụ (ihe dị ka 30-40 Celsius) na-enyere aka mee ka mgbasawanye ngwa ngwa, ma oke mmiri dị elu (ihe karịrị 50 Celsius) nwere ike ime ka ọkpụkpụ na-etolite n'oge usoro mgbasa, nke ga-emetụta mmetụta mgbasa.
2. Tupu-wetting ọgwụgwọ
Hydroxyethyl cellulose na-etolite ngwa ngwa n'ime mmiri, ya mere ọgwụgwọ tupu wetting bụ usoro mgbasa ozi dị irè. Site na mbụ ịgwakọta HEC na ihe mgbaze mmiri na-agbaze (dị ka ethanol, propylene glycol, wdg), a na-ete HEC n'otu n'otu ka ọ ghara ịmịnye mmiri ozugbo na ịkpụ akpụ. Usoro a nwere ike imeziwanye arụmọrụ mgbasa ozi na-esote.
3. Jikwaa ọsọ mgbakwunye
Mgbe ị na-achụsasị hydroxyethyl cellulose, ntụ ntụ kwesịrị ịwụsa n'ime mmiri nwayọọ nwayọọ na ọbụna mgbe ọ na-akpali. Ọsọ nke onye na-akpali akpali ekwesịghị ịdị oke elu iji gbochie oke ụfụfụ. Ọ bụrụ na mgbakwunye na-agba ọsọ ngwa ngwa, HEC nwere ike ọ gaghị agbasasị kpamkpam, na-emepụta micelles na-enweghị isi, nke ga-emetụta usoro mgbasa ozi na-esote.
4. Na-akpali akpali
Ịkpalite bụ otu n'ime usoro kachasị mkpa na usoro mgbasa ozi. A na-atụ aro ka iji onye na-agba ọsọ dị ala na-akpali akpali mgbe niile iji hụ na hydroxyethyl cellulose nwere ike kesaa nke ọma na usoro mmiri mmiri. Ịkwalite ngwa ngwa dị elu nwere ike ime ka HEC na-emewanyewanye, mee ka oge nkwụsịtụ dịkwuo elu, na ịmepụta egosipụta, na-emetụta nghọta nke ngwọta. N'ozuzu, oge mkpali kwesịrị ịchịkwa n'etiti nkeji 30 na ọtụtụ awa, dabere na akụrụngwa eji na okpomọkụ nke mmiri.
5. Tinye electrolytes ma ọ bụ gbanwee pH
Mgbe ụfọdụ, usoro mgbasa nke hydroxyethyl cellulose nwere ike ime ngwa ngwa site n'ịgbakwunye ọnụọgụ electrolytes kwesịrị ekwesị (dị ka nnu) ma ọ bụ imezi uru pH. Usoro a dabara adaba maka ngwa ndị nwere nnukwu ihe achọrọ maka ọsọ mgbasa. Otú ọ dị, ọnụ ọgụgụ nke electrolyte ma ọ bụ pH kwesịrị iji nlezianya dozie ya iji zere imetụta arụmọrụ nke HEC.
Nsogbu nkịtị na ihe mgbochi
Agglomeration: Nsogbu kachasị nke HEC bụ agglomeration n'oge usoro mgbasa, nke na-eduga ná nkwụsị ezughị ezu. Iji zere nke a, ị nwere ike iji usoro tupu wetting ma ọ bụ gwakọta HEC na ihe ndị ọzọ na-eme ntụ ntụ (dị ka ihe ncha, pigmenti, wdg) wee tinye ya na mmiri.
Ọnụego mgbasa nwayọ nwayọ: Ọ bụrụ na ọnụego mgbasa na-adị nwayọ, ị nwere ike mee ka mgbasa ahụ dị ngwa site n'ịbawanye arụmọrụ na-akpali akpali ma ọ bụ ịbawanye okpomọkụ mmiri nke ọma. N'otu oge ahụ, ị nwekwara ike ịnwale iji HEC ngwa ngwa, nke a na-emeso ya ka ọ gbaze ngwa ngwa n'oge dị mkpirikpi.
Nsogbu afụ: A na-emepụta afụ ngwa ngwa mgbe a na-akpali akpali, na-emetụta nghọta na viscosity nha nke ngwọta. N'okwu a, ibelata ọsọ na-akpali akpali ma ọ bụ ịgbakwunye ọnụ ọgụgụ kwesịrị ekwesị nke onye na-emebi ụfụfụ nwere ike ibelata nguzobe nke afụ.
Ngwa kpachara anya maka hydroxyethyl cellulose
Na ngwa ndị bara uru, a ga-ahọrọ ụdị kwesịrị ekwesị na usoro mgbakwunye nke hydroxyethyl cellulose dị ka ihe achọrọ nke usoro dị iche iche. Dịka ọmụmaatụ, na ụlọ ọrụ mkpuchi, hydroxyethyl cellulose na-eji ọ bụghị nanị na-eme ka ọkpụkpụ, kamakwa ọ nwere ike imeziwanye rheology, imepụta ihe nkiri na nkwụsi ike nke mkpuchi. N'ime ụlọ ọrụ mmanụ, nguzogide nnu nke HEC dị oke egwu, n'ihi ya, ọ dị mkpa ka a gbanwee nhọrọ ahụ dịka ọnọdụ ala dị ala.
Ịchụsa hydroxyethyl cellulose bụ ọrụ nkà na ụzụ nke ukwuu, ọ dịkwa mkpa ịhọrọ usoro mgbasa ozi kwesịrị ekwesị dịka ọnọdụ ngwa dị iche iche si dị. Site n'ịchịkwa okpomọkụ nke mmiri, tupu mmiri mmiri nke ọma, mkpali ezi uche dị na ya na ịgbakwunye ihe mgbakwunye kwesịrị ekwesị, ọ nwere ike hụ na hydroxyethyl cellulose na-agbasasị ma gbazee kpamkpam n'ime mmiri, si otú ahụ na-eme ka ọrụ ya dịkwuo elu na nkwụsịtụ.
Oge nzipu: Ọktoba 23-2024