Methylcellulose bụ ọcha ma ọ bụ na-acha ọcha fibrous ma ọ bụ granular ntụ ntụ;enweghị isi na enweghị ụtọ.Ngwaahịa a na-aza n'ime ngwọta colloidal doro anya ma ọ bụ dịtụ turbid n'ime mmiri;ọ bụ ihe a na-adịghị ahụkebe na ethanol zuru oke, chloroform ma ọ bụ ether.Ngwa ngwa gbasasịa ma zaa na mmiri ọkụ na 80-90 Celsius C, ma gbazee ngwa ngwa mgbe ọ dị jụụ.Ngwọta mmiri na-esiwanye ike na ụlọ okpomọkụ, ma nwee ike gel na okpomọkụ dị elu, gel nwere ike gbanwee na ngwọta na okpomọkụ.
Ọ nwere ọmarịcha wettability, dispersibility, adhesiveness, ndim, emulsification, mmiri njigide na ihe nkiri-akpụ Njirimara, na impermeability mmanụ.Ihe nkiri a kpụrụ akpụ nwere ezigbo ike, mgbanwe na nghọta.N'ihi na ọ bụghị ionic, ọ nwere ike dakọtara na emulsifiers ndị ọzọ, ma ọ dị mfe ịpụpụ nnu, ihe ngwọta ahụ kwụsiri ike na nso nke PH2-12.Sodium Carboxymethyl Cellulose Ngwaahịa a bụ nnu sodium nke cellulose carboxymethyl ether, nke bụ anionic cellulose ether, na-acha ọcha ma ọ bụ milky na-acha ọcha fibrous ntụ ntụ ma ọ bụ granules, na a njupụta nke 0.5-0.7 g / cm3, fọrọ nke nta odorless na keenweghiuto , na hygroscopicity.Ọ dị mfe gbasasịa n'ime mmiri iji mepụta ngwọta colloidal transperent, nke a na-adịghị ahụkebe na ihe mgbaze organic dị ka ethanol.
pH nke ngwọta mmiri bụ 6.5-8.5.Mgbe pH dị> 10 ma ọ bụ <5, viscosity nke gluu ga-ebelata nke ukwuu, na arụmọrụ kachasị mma mgbe pH bụ 7. Stable na-ekpo ọkụ, viscosity na-ebili ngwa ngwa n'okpuru 20 Celsius C, wee gbanwee nwayọọ nwayọọ na 45. Celsius C.Igwe ọkụ na-adịte aka karịa 80 Celsius nwere ike denature colloid ma belata viscosity na arụmọrụ.Ọ na-adị mfe sochiri na mmiri, na ngwọta bụ uzo;ọ kwụsiri ike na ngwọta alkaline, mana ọ na-adị mfe hydrolyzed mgbe ọ zutere acid, ọ ga-akpalite mgbe pH uru bụ 2-3, na ọ ga-emeghachi omume na polyvalent metal salts.Hydroxypropyl methylcellulose, nke a makwaara dị ka hypromellose na cellulose hydroxypropyl methyl ether, bụ nke cellulose owu dị ọcha nke ukwuu dị ka akụrụngwa, nke a na-akpachapụ anya n'okpuru ọnọdụ alkaline.
Soluble n'ime mmiri na ọtụtụ polar c na nha kwesịrị ekwesị nke ethanol / mmiri, propanol / mmiri, dichloroethane, wdg, na-adịghị edozi na ether, acetone, ethanol zuru oke, ma gbasaa n'ime colloid doro anya ma ọ bụ dị ntakịrị na mmiri oyi.Ihe ngwọta mmiri nwere ọrụ elu, nghọta dị elu na arụmọrụ kwụsiri ike.HPMC nwere ihe onwunwe nke thermal gelation.Ngwaahịa aqueous ngwọta na-ekpo ọkụ na-etolite a gel na precipitates, na mgbe dissolves mgbe obi jụrụ.Okpomọkụ gelation nke nkọwa dị iche iche dị iche iche.
Oge nzipu: Feb-24-2023