Carboxymethylcellulose (CMC) na methylcellulose (MC) bụ ihe abụọ sitere na cellulose, polymer eke dị na mgbidi cell nke osisi. Mwepụta ndị a na-ahụta ojiji dị ukwuu na ụlọ ọrụ dị iche iche n'ihi ihe ha pụrụ iche. N'agbanyeghị ịkekọrịta myirịta, CMC na MC nwere ọdịiche dị iche na nhazi kemịkalụ ha, akụrụngwa, ngwa na ojiji ụlọ ọrụ mmepụta ihe.
1.Chemical Structure:
Carboxymethylcellulose (CMC):
A na-emepụta CMC site na etherification nke cellulose na chloroacetic acid, na-eme ka a dochie anya otu hydroxyl (-OH) na ọkpụkpụ azụ cellulose na otu carboxymethyl (-CH2COOH).
Ogo nke nnọchi (DS) na CMC na-ezo aka na nkezi ọnụọgụ nke otu carboxymethyl kwa nkeji glucose na yinye cellulose. Oke a na-ekpebi njirimara nke CMC, gụnyere solubility, viscosity, na omume rheological.
Methylcellulose (MC):
A na-emepụta MC site na nnọchi nke otu hydroxyl na cellulose na otu methyl (-CH3) site na etherification.
Dị ka CMC, ihe onwunwe nke MC na-emetụta ogo nke nnọchi, nke na-ekpebi oke methylation n'akụkụ eriri cellulose.
2. Solubility:
Carboxymethylcellulose (CMC):
CMC bụ soluble na mmiri na-etolite uzo, viscous ngwọta.
Ya solubility bụ pH-adabere, na elu solubility na alkaline ọnọdụ.
Methylcellulose (MC):
MC nwekwara soluble na mmiri, mana solubility ya na-adabere na okpomọkụ.
Mgbe agbazere na mmiri oyi, MC na-etolite jel, nke na-agbaze n'ụzọ ọzọ n'elu kpo oku. Ngwongwo a na-eme ka ọ dị mma maka ngwa chọrọ gelation na-achịkwa.
3. Viscosity:
CMC:
Na-egosiputa elu viscosity na aqueous ngwọta, na-atụnye aka ya ndim Njirimara.
Enwere ike gbanwee viscosity ya site n'ịgbanwe ihe ndị dị ka itinye uche, ogo nke nnọchi, na pH.
MC:
Na-egosiputa omume viscosity yiri CMC mana ọ na-adịkarị obere viscous.
A pụkwara ịchịkwa viscosity nke ngwọta MC site n'ịgbanwe paramita dị ka okpomọkụ na itinye uche.
4.Fim Formation:
CMC:
Na-emepụta ihe nkiri doro anya, na-agbanwe agbanwe mgbe a na-etinye ya na ngwọta mmiri.
Ihe nkiri ndị a na-achọta ngwa na ụlọ ọrụ dịka nkwakọ nri na ọgwụ.
MC:
Ọ nwekwara ike ịmepụta ihe nkiri mana ọ na-agbakasị ike ma e jiri ya tụnyere ihe nkiri CMC.
5. Ụlọ ọrụ nri:
CMC:
A na-eji ya eme ihe dị ka ihe nkwudo, thickener, na emulsifier na ngwaahịa nri dị ka ice cream, sauces, na uwe.
Ikike ya igbanwe nhazi na ọnụ nke ihe oriri na-eme ka ọ baa uru na nhazi nri.
MC:
Ejiri ya maka ebumnuche ndị yiri ya dị ka CMC na ngwaahịa nri, ọkachasị na ngwa chọrọ nhazi gel na nkwụsi ike.
6. ọgwụ:
CMC:
Ejiri ya n'ụdị usoro ọgwụ dị ka ihe nkwekọ, mgbasa, na viscosity modifier n'ichepụta mbadamba nkume.
A na-arụkwa ya n'ọrụ n'ụdị usoro dị ka ude na gels n'ihi njirimara rheological ya.
MC:
A na-ejikarị eme ihe dị ka onye na-agba ume na gelling na ụlọ ọgwụ, karịsịa na ọgwụ mmiri ọnụ na ngwọta anya.
Ngwaahịa Nlekọta 7.Personal Care:
CMC:
Achọtara ya n'ihe nlekọta onwe onye dị iche iche dị ka ntacha eze, ncha ntutu, na lotions dị ka ihe nkwusi ike na ihe na-agbakọ.
MC:
Ejiri ya na ngwa ndị yiri ya dị ka CMC, na-enye aka na nhazi na nkwụsi ike nke usoro nlekọta onwe onye.
Ngwa 8.Industrial:
CMC:
Arụ ọrụ na ụlọ ọrụ dị ka textiles, akwụkwọ, na ceramik maka ikike ya ime ihe dị ka ihe nchikota, rheology modifier, na onye na-ejigide mmiri.
MC:
A na-achọta ihe eji arụ ụlọ, agba, na nrapado n'ihi ihe na-eme ka ọ sie ike ma na-ejikọta ya.
mgbe carboxymethylcellulose (CMC) na methylcellulose (MC) bụ ma cellulose ewepụtara na iche iche ulo oru ngwa, ha na-egosipụta iche na ha chemical Ọdịdị, solubility omume, viscosity profaịlụ, na ngwa. Ịghọta ọdịiche ndị a dị mkpa maka ịhọrọ usoro kwesịrị ekwesị maka ojiji a kapịrị ọnụ na ụlọ ọrụ dị iche iche, sitere na nri na ọgwụ na nlekọta onwe onye na ngwa mmepụta ihe. Ma ọ dị mkpa maka pH-sensitive thickener dị ka CMC na ngwaahịa nri ma ọ bụ onye na-ahụ maka gelling na-anabata okpomọkụ dị ka MC na usoro ọgwụ, usoro nke ọ bụla na-enye uru pụrụ iche ahaziri maka ihe achọrọ na mpaghara dị iche iche.
Oge nzipu: Mar-22-2024