Sodium carboxymethyl cellulose (CMC), makwaara dị ka carboxymethyl cellulose.Ọ bụ ether cellulose dị elu nke a kwadebere site na imezi cellulose eke kemịkal, na nhazi ya bụ akụkụ nke D-glucose jikọtara ya na njikọ β_(14) glycosidic.
CMC bụ ntụ ntụ na-acha ọcha ma ọ bụ mmiri ara ehi na-acha ọcha ma ọ bụ granules nwere njupụta nke 0.5g/cm3, ọ fọrọ nke nta ka ọ bụrụ enweghị ụtọ, enweghị isi na hygroscopic.
Carboxymethyl cellulose dị mfe ịgbasa, na-etolite ngwọta colloidal transperent n'ime mmiri, ọ na-esikwaghị ike na ihe mgbaze organic dị ka ethanol.
Mgbe pH>10, pH uru nke 1% aqueous ngwọta bụ 6.5≤8.5.
Isi mmeghachi omume bụ dị ka ndị a: eke cellulose na mbụ alkalized na NaOH, mgbe ahụ chloroacetic acid na-agbakwunyere, na hydrogen na hydroxyl otu na glucose unit meghachi omume na carboxymethyl otu na chloroacetic acid.
Enwere ike ịhụ site na nhazi ahụ na e nwere otu hydroxyl atọ na nkeji glucose ọ bụla, ya bụ C2, C3 na C6 hydroxyl, na ngbanwe nke hydrogen na otu hydroxyl nke glucose unit na-anọchi anya ihe ngosi anụ ahụ na nke kemịkal.
Ọ bụrụ na hydrogens na otu hydroxyl atọ dị na nkeji ọ bụla na-eji otu carboxymethyl dochie anya, mgbe ahụ, a na-akọwa ogo nke nnọchi anya dị ka 7-8, yana ogo kachasị nke nnọchi nke 1.0 (ọkwa nri nwere ike nweta ogo a naanị).Ogo nke nnọchi nke CMC na-emetụta kpọmkwem solubility, emulsification, ndim, nkwụsi ike, nguzogide acid na nnu nnu nke CMC.
Mgbe ị na-eji ngwaahịa CMC, anyị kwesịrị ịghọta nke ọma parampat index, dị ka nkwụsi ike, viscosity, acid resistance, viscosity, wdg.
N'ezie, dị iche iche ngwa na-eji dị iche iche carboxymethyl cellulose, n'ihi na e nwere ọtụtụ ụdị viscosity eme on carboxymethyl cellulose, na anụ ahụ na kemịkal egosi dịkwa iche iche.Ịmara ihe ndị a, ị nwere ike ịma ka esi ahọrọ ngwaahịa kwesịrị ekwesị.
Oge nzipu: Nov-07-2022