Cellulose ethers bụ ihe dị iche iche a na-eji eme ihe n'ọtụtụ ụlọ ọrụ dị iche iche, gụnyere ụlọ ọrụ owuwu, ọgwụ na nri. Usoro mmepụta nke cellulose ether dị mgbagwoju anya, ọ na-agụnye ọtụtụ usoro, ọ chọkwara ọtụtụ ọkachamara na akụrụngwa pụrụ iche. N'isiokwu a, anyị ga-atụle nke ọma usoro mmepụta nke cellulose ethers.
Nzọụkwụ mbụ n'ime usoro mmepụta cellulose ether bụ nkwadebe nke ihe ndị e ji emepụta cellulose ethers. Ihe ndị e ji emepụta cellulose ethers na-esikarị na mkpụrụ osisi na owu ndị e ji egbutu egbu. A na-apịa ma kpuchie mkpụrụ osisi ahụ iji wepụ ihe ndị buru ibu, ebe a na-ahazi ihe mkpofu owu ka ọ bụrụ obere mkpụrụ. A na-ebelata nha mkpụrụ osisi ahụ site n'ịgweri ya iji nweta ntụ ntụ dị mma. A na-agwakọta mkpụrụ osisi na owu ndị e ji ntụtu mee ọnụ n'ókè ụfọdụ dabere na ihe achọrọ na ngwaahịa ikpeazụ.
Nzọụkwụ ọzọ gụnyere nhazi kemịkalụ nke ihe oriri agwakọtara. A na-ebu ụzọ gwọọ pulp ahụ site na iji mmiri alkaline (nke na-abụkarị sodium hydroxide) iji mebie usoro eriri nke cellulose ahụ. A na-eji ihe mgbaze dị ka carbon disulfide gwọọ cellulose nke si na ya pụta iji mepụta cellulose xanthate. A na-eme ọgwụgwọ a na tankị nwere ihe na-enye pulp mgbe niile. A na-esi na ngwaọrụ extrusion ewepụta ihe ngwọta cellulose xanthate iji mepụta eriri.
Mgbe nke ahụ gasịrị, a kpụchara eriri xanthate cellulose n'ime bat nwere sulfuric acid dị nro. Nke a na-eme ka a gbanwee usoro xanthate cellulose, na-emepụta eriri cellulose. A na-eji mmiri saa eriri cellulose ndị e mepụtara ọhụrụ iji wepụ ihe ọ bụla na-adịghị mma tupu e mee ka ha dị ọcha. Usoro ịcha ọcha ahụ na-eji hydrogen peroxide eme ka eriri cellulose dị ọcha, nke a na-eji mmiri asa ma hapụ ya ka ọ kpọọ nkụ.
Mgbe emechara ka eriri cellulose kpọọ nkụ, ha na-eme usoro a na-akpọ etherification. Usoro etherification gụnyere iwebata otu ether, dị ka methyl, ethyl ma ọ bụ hydroxyethyl otu, n'ime eriri cellulose. A na-eme usoro a site na iji mmeghachi omume nke ihe na-eme ka etherification na ihe na-akpali acid na-eme ihe n'ihu ihe mgbaze. A na-emekarị mmeghachi omume n'okpuru ọnọdụ okpomọkụ na nrụgide a na-achịkwa nke ọma iji hụ na ngwaahịa ahụ na-amịpụta ma dị ọcha.
N'oge a, ether cellulose dị n'ụdị ntụ ọcha. A na-anwale ngwaahịa emechara iji hụ na ngwaahịa ahụ ruru ihe achọrọ na nkọwapụta ya, dịka viscosity, ịdị ọcha nke ngwaahịa na ọdịnaya mmiri. A na-etinye ya n'ime akpa ma ziga ya nye onye ọrụ ikpeazụ.
Na mkpokọta, usoro mmepụta nke cellulose ether gụnyere nkwadebe ihe eji emepụta ihe, ọgwụgwọ kemịkalụ, ịgbagharị, ịgba ọcha na etherification, wee soro nnwale njikwa mma. Usoro a dum chọrọ akụrụngwa pụrụ iche na ihe ọmụma gbasara mmeghachi omume kemịkalụ ma a na-eme ya n'okpuru ọnọdụ a na-achịkwa nke ọma. Imepụta cellulose ethers bụ usoro dị mgbagwoju anya ma na-ewe oge, mana ọ dị mkpa n'ọtụtụ ụlọ ọrụ.
Oge ozi: Juun-21-2023