Ngwongwo sodium Carboxymethyl cellulose na ihe na-emetụta na CMC viscosity

Sodium Carboxymethyl cellulose (CMC) bụ polymer a na-ejikarị na ngwa ụlọ ọrụ dị iche iche, gụnyere nri, ọgwụ, ngwaahịa nlekọta onwe onye, ​​​​na ncha. Ọ bụ ihe mgbaze nke cellulose na-agbaze mmiri nke a na-emepụta site na mmeghachi omume nke cellulose na chloroacetic acid na sodium hydroxide. CMC bụ nke ukwuu vasatail na nwere ọtụtụ ihe onwunwe nke na-eme ka ọ dabara maka ngwa dị iche iche. N'isiokwu a, anyị ga-atụle ihe onwunwe nke CMC na ihe ndị na-emetụta viscosity ya.

Njirimara nke CMC:

1. Solubility: CMC bụ nke ukwuu soluble na mmiri, nke na-eme ka ọ dị mfe ijikwa na iji dị iche iche ngwa. Ọ nwekwara ike igbari na ụfọdụ ihe mgbaze organic, dị ka ethanol na glycerol, dabere na ogo nke nnọchi ya.
2. Viscosity: CMC bụ polymer viscous nke ukwuu nke nwere ike ịmepụta gels na ọkwa dị elu. Ihe dị iche iche na-emetụta viscosity nke CMC, dị ka ogo nke nnọchi, ntinye uche, pH, okpomọkụ, na ntinye electrolyte.
3. Rheology: CMC na-egosipụta omume pseudoplastic, nke pụtara na viscosity ya na-ebelata na ọnụ ọgụgụ shear na-abawanye. Ihe onwunwe a bara uru na ngwa ebe achọrọ nnukwu viscosity n'oge nhazi, mana obere viscosity dị mkpa n'oge ngwa.
4. Nkwụsi ike: CMC kwụsiri ike n'ọtụtụ pH na ọnọdụ okpomọkụ. Ọ na-eguzogidekwa mmebi microbial, nke na-eme ka ọ dị mma maka iji nri na ngwa ọgwụ.
5. Njirimara ndị na-emepụta ihe nkiri: CMC nwere ike ịmepụta ihe nkiri dị gịrịgịrị ma na-agbanwe agbanwe mgbe akpọnwụwo. Ihe nkiri ndị a nwere ezigbo ihe mgbochi ma enwere ike iji ya dị ka mkpuchi maka ngwa dị iche iche.

Ihe ndị na-emetụta viscosity CMC:

1. Degree of nnọchi (DS): Ogo nke nnọchi bụ nkezi ọnụ ọgụgụ nke carboxymethyl otu kwa anhydroglucose unit na cellulose molekul. CMC nwere DS dị elu nwere ogo dị elu nke nnọchi, nke na-eduga na viscosity dị elu. Nke a bụ n'ihi na DS dị elu na-eduga n'ọtụtụ carboxymethyl, nke na-eme ka ọnụ ọgụgụ nke molekul mmiri na-ejikọta na polymer.
2. Ntinye uche: viscosity nke CMC na-abawanye na itinye uche na-abawanye. Nke a bụ n'ihi na n'ogo dị elu, ọtụtụ ụdọ polymer dị, nke na-eduga n'ọkwa dị elu nke ntinye na ụba viscosity.
3. pH: A na-emetụta viscosity nke CMC site na pH nke ngwọta. Na pH dị ala, CMC nwere viscosity dị elu n'ihi na ndị otu carboxyl dị n'ụdị protonated ha ma nwee ike ịmekọrịta nke ọma na ụmụ irighiri mmiri. Na pH dị elu, CMC nwere viscosity dị ala n'ihi na ndị otu carboxyl dị n'ụdị ha mebiri emebi ma nwee obere mmekọrịta na ụmụ irighiri mmiri.
4. Okpomọkụ: Viscosity nke CMC na-ebelata na okpomọkụ na-abawanye. Nke a bụ n'ihi na na okpomọkụ dị elu, ụdọ polymer nwere ike na-ekpo ọkụ karị, nke na-eduga n'ọkwa dị elu nke njem na mbelata viscosity.
5. Ịtụle Electrolyte: A na-emetụta viscosity nke CMC site na ọnụnọ nke electrolytes na ngwọta. N'ihe dị elu nke electrolyte, viscosity nke CMC na-ebelata n'ihi na ions dị na ngwọta nwere ike imekọrịta na otu carboxyl nke polymer ma belata mmekọrịta ha na ụmụ irighiri mmiri.

N'ikpeazụ, Sodium Carboxymethyl cellulose (CMC) bụ polymer na-agbanwe agbanwe nke ukwuu nke na-egosipụta ọtụtụ ihe onwunwe, gụnyere solubility, viscosity, rheology, nkwụsi ike, na ihe na-emepụta ihe nkiri. Ihe dị iche iche na-emetụta viscosity nke CMC, dị ka ogo nke nnọchi, ntinye uche, pH, okpomọkụ, na ntinye electrolyte. Ịghọta ihe ndị a dị mkpa maka ịkwalite arụmọrụ CMC na ngwa dị iche iche.