Hydroxyethyl cellulose (HEC) bụ ihe na-abụghị ionic mmiri-soluble polymer ihe a na-ejikarị eme ihe ịchọ mma, ọgwụ, agba, mkpuchi, ihe owuwu na ubi ndị ọzọ. Ọ nwere ọmarịcha ndim, nkwusioru, mgbasa, emulsification, imepụta ihe nkiri, njigide mmiri na ihe ndị ọzọ, ya mere ọ bụrụla ihe enyemaka dị mkpa n'ọtụtụ ụlọ ọrụ. Otú ọ dị, hydroxyethyl cellulose adịghị enweta ya ozugbo site na ihe ndị sitere n'okike, kama a na-enweta ya site n'ịgbanwe cellulose eke sitere na kemịkal. Iji mezuo nke a, iji ghọta ihe sitere n'okike nke hydroxyethyl cellulose, anyị kwesịrị ibu ụzọ ghọta isi mmalite na nhazi nke cellulose.
Isi iyi nke cellulose
Cellulose bụ otu n'ime ihe ndị na-emepụta ihe na-emepụta ihe na-emepụta ihe n'ụwa ma dị na mgbidi cell nke osisi, karịsịa na osisi osisi, owu, flax na ihe ọkụkụ ndị ọzọ. Ọ bụ isi ihe dị na nhazi osisi ma na-enye ike na nkwụsi ike n'ibu. Akụkụ bụ isi nke cellulose bụ molekul glucose, nke jikọtara ya na njikọ β-1,4-glycosidic iji mepụta usoro ogologo ogologo. Dị ka ihe eji eme polymer, cellulose nwere ọmarịcha anụ ahụ na kemịkalụ, na-eme ka ọ bụrụ ihe dị mkpa maka mmepụta ihe dị iche iche.
Usoro nkwadebe nke hydroxyethyl cellulose
Ọ bụ ezie na cellulose n'onwe ya nwere ọtụtụ ihe ndị magburu onwe ya, ngwa ngwa ya nwere oke ruo n'ókè ụfọdụ. Isi ihe kpatara ya bụ na cellulose nwere adịghị ike solubility, karịsịa mmachi solubility na mmiri. Iji mee ka ihe onwunwe a dịkwuo mma, ndị ọkà mmụta sayensị na-eji kemịkalụ gbanwee cellulose iji kwadebe ihe dị iche iche nke cellulose. Hydroxyethyl cellulose bụ cellulose ether na-soluble mmiri nke enwetara site na ethoxylating eke cellulose site na mmeghachi omume kemịkal.
N'ime usoro nkwadebe a kapịrị ọnụ, a na-agbaze cellulose eke na ngwọta alkali, wee tinye ethylene oxide na usoro mmeghachi omume. Mmeghachi omume ethoxylation nke ethylene oxide na otu hydroxyl na cellulose na-eme ka ịmepụta hydroxyethyl cellulose. Mgbanwe a na-abawanye hydrophilicity nke agbụ cellulose, si otú ahụ na-emeziwanye solubility na viscosity Njirimara na mmiri.
Isi mmalite akụrụngwa
Isi ihe sitere n'okike maka nkwadebe nke hydroxyethyl cellulose bụ cellulose, isi mmalite sitere na cellulose gụnyere:
Osisi: Ọdịnaya cellulose dị na osisi dị elu, ọkachasị na osisi coniferous na nke sara mbara, ebe cellulose nwere ike iru 40%-50%. Osisi bụ otu n'ime isi mmalite nke cellulose na ụlọ ọrụ, karịsịa n'ime akwụkwọ na mmepụta nke cellulose.
Owu: eriri owu fọrọ nke nta ka ọ bụrụ cellulose dị ọcha mejupụtara, ọdịnaya cellulose dị na owu ruru ihe karịrị 90%. N'ihi ịdị ọcha ya dị elu, a na-ejikarị eriri owu akwadebe ihe mmepụta cellulose dị elu.
Ihe ọkụkụ dị ka flax na hemp: eriri osisi ndị a nwekwara ọgaranya na cellulose, na n'ihi na eriri osisi ndị a na-enwekarị ike ọrụ dị elu, ha nwekwara uru ụfọdụ na mmịpụta cellulose.
Agricultural mkpofu: gụnyere ahịhịa, ọka wit, ọka ahịhịa, wdg. Ihe ndị a nwere a ụfọdụ ego nke cellulose, na cellulose nwere ike amịpụtara ha site kwesịrị ekwesị ọgwụgwọ usoro, na-enye a ọnụ ala na mmeghari isi iyi nke akụrụngwa maka mmepụta nke cellulose mmepụta. .
Ngwa mpaghara nke hydroxyethyl cellulose
N'ihi ihe pụrụ iche nke hydroxyethyl cellulose, a na-eji ya eme ihe n'ọtụtụ ebe. Ndị a bụ ọtụtụ mpaghara ngwa ngwa:
Ụlọ ọrụ ihe owuwu: Hydroxyethyl cellulose bụ nke a na-ejikarị eme ihe na ihe owuwu ụlọ dị ka onye na-ekpuchi mmiri na onye na-ejigide mmiri, karịsịa na ciment mortar, gypsum, putty powder and other materials, nke nwere ike imeziwanye ihe na-ewu na mmiri na-ejigide ihe.
Industrylọ ọrụ kemịkalụ kwa ụbọchị: N'ihe nchacha, ngwaahịa nlekọta anụ ahụ, ncha ntutu na ngwaahịa kemịkalụ ndị ọzọ kwa ụbọchị, hydroxyethyl cellulose na-eji dị ka ihe na-esikwu ike na nkwụsi ike iji meziwanye mmetụta na nkwụsi ike nke ngwaahịa ahụ.
Agba na mkpuchi: N'ime ụlọ ọrụ mkpuchi, a na-eji hydroxyethyl cellulose mee ihe dị ka ihe na-eme ka ọkpụkpụ na rheology na-eme ka ọ dịkwuo mma na-arụ ọrụ nke mkpuchi ma zere ịkwa ụda.
Ogige ọgwụ: N'ime nkwadebe ọgwụ, enwere ike iji hydroxyethyl cellulose dị ka onye na-ekekọta, thickener na onye nkwusioru maka mbadamba nkume iji melite njirimara ntọhapụ na nkwụsi ike nke ọgwụ.
Ọ bụ ezie na hydroxyethyl cellulose abụghị ihe sitere n'okike, akụrụngwa ya bụ isi, cellulose, dị n'ọtụtụ ebe na osisi na okike. Site na mgbanwe kemịkalụ, cellulose eke nwere ike ịtụgharị ka ọ bụrụ hydroxyethyl cellulose nwere ọmarịcha arụmọrụ ma tinye ya n'ọrụ dị iche iche. Osisi sitere n'okike dị ka osisi, owu, flax, wdg na-enye nnukwu ihe eji eme ihe maka mmepụta hydroxyethyl cellulose. Site na ọganihu nke sayensị na nkà na ụzụ na mmụba nke ụlọ ọrụ mmepụta ihe, a na-emeziwanye usoro mmepụta nke hydroxyethyl cellulose na-aga n'ihu, a na-atụkwa anya na ọ ga-egosipụta uru pụrụ iche ya na mpaghara ndị ọzọ n'ọdịnihu.
Oge nzipu: Ọktoba 23-2024