Usoro Mmepụta nke sodium carboxymethylcellulose

Usoro mmepụta nke sodium carboxymethylcellulose (CMC) gụnyere usoro dị iche iche, gụnyere nkwadebe nke cellulose, etherification, nhicha, na ịkpọ nkụ. Lee nkọwa nke usoro mmepụta a na-ahụkarị:

1. Nkwadebe nke Cellulose: Usoro a na-amalite site na nkwadebe nke cellulose, nke a na-esikarị na mkpụrụ osisi ma ọ bụ owu. A na-ebu ụzọ sachaa ma nụchaa cellulose ahụ iji wepụ ihe ndị na-adịghị ọcha dịka lignin, hemicellulose, na ihe ndị ọzọ na-emerụ ahụ. Cellulose a dị ọcha na-eje ozi dị ka ihe mmalite maka mmepụta nke CMC.
2. Mmezi Alkalịshọn: A na-eji mmiri alkaline, nke na-abụkarị sodium hydroxide (NaOH) agwọ cellulose ahụ e mere ka ọ dị ọcha, iji mee ka mmeghachi omume ya dịkwuo mma ma mee ka mmeghachi omume etherification na-esote dị mfe. Mmezi Alkalịshọn na-enyekwa aka ịza aza ma mepee eriri cellulose, na-eme ka ha dịkwuo mfe ịnweta mgbanwe kemịkalụ.
3. Mmeghachi Omume Etherification: A na-emeghachi omume na monochloroacetic acid (MCA) ma ọ bụ nnu sodium ya, sodium monochloroacetate (SMCA), n'ihu ihe na-akpali akpali n'okpuru ọnọdụ a na-achịkwa. Mmeghachi omume etherification a gụnyere nnọchi nke otu hydroxyl na agbụ cellulose na otu carboxymethyl (-CH2COONa). Enwere ike ijikwa ogo nnọchi (DS), nke na-anọchite anya ọnụọgụ nkezi nke otu carboxymethyl kwa otu glucose nke agbụ cellulose, site na ịgbanwe paramita mmeghachi omume dịka okpomọkụ, oge mmeghachi omume, na njupụta mmeghachi omume.
4. Nkwụsị: Mgbe mmeghachi omume etherification gasịrị, a na-ewepụ ihe si na ya pụta iji gbanwee otu acidic ọ bụla fọdụrụ ka ọ bụrụ ụdị nnu sodium ha (carboxymethylcellulose sodium). A na-enweta nke a site na itinye ngwọta alkaline, dị ka sodium hydroxide (NaOH), na ngwakọta mmeghachi omume. Nkwụsị na-enyekwa aka ịgbanwe pH nke ngwọta ahụ ma mee ka ngwaahịa CMC kwụsie ike.
5. Ịsacha: A na-asacha sodium carboxymethylcellulose dị ọcha iji wepụ ihe ruru unyi, ihe ndị na-adịghị arụ ọrụ, na ihe ndị sitere na ngwakọta mmeghachi omume. Usoro nhicha nwere ike ịgụnye ịsacha, nzacha, centrifugation, na ihicha. A na-asachakarị CMC dị ọcha na mmiri iji wepụ alkali na nnu fọdụrụ, wee jiri nzacha ma ọ bụ centrifugation kewaa ngwaahịa CMC siri ike na usoro mmiri mmiri.
6. Ịkpọcha: A na-emecha kpọọ sodium carboxymethylcellulose a dị ọcha iji wepụ mmiri gabigara ókè ma nweta mmiri achọrọ maka nchekwa na nhazi ọzọ. Ụzọ ịkpọcha nwere ike ịgụnye ịkpọcha ikuku, ịkpọcha ahịhịa, ma ọ bụ ịkpọcha drum, dabere na njirimara ngwaahịa achọrọ na nha nrụpụta.

Ngwaahịa sodium carboxymethylcellulose nke a na-enweta bụ ntụ ntụ ọcha ma ọ bụ ihe nwere ntụ ntụ ọcha, nke nwere ezigbo mmiri na-agbaze ma na-eme ka ọ sie ike. A na-ejikarị ya eme ihe dị ka ihe na-eme ka ihe sie ike, ihe na-eme ka ọ kwụsie ike, ihe na-ejikọta ihe, na ihe na-agbanwe rheology n'ọtụtụ ụlọ ọrụ dị iche iche, gụnyere nri, ọgwụ, ihe ịchọ mma, ákwà, na ngwa ụlọ ọrụ mmepụta ihe.