Enwere ike ịgwakọta Hydroxypropyl methyl cellulose na carboxymethyl cellulose sodium

Enwere ike ịgwakọta ngwakọta HPMC na CMC

Methyl celluloseỌ na-acha ọcha ma ọ bụ ọcha dị ka ntụ ntụ fibrous ma ọ bụ granular; Enweghị isi, enweghị ụtọ. Ngwaahịa a na mmiri na-agbaze ka ọ bụrụ mmiri doro anya ma ọ bụ ntakịrị gbara ọchịchịrị; A naghị agbaze ya na ethanol zuru oke, chloroform ma ọ bụ diethyl ether. A na-agbasa ya ngwa ngwa ma zaa ya na mmiri ọkụ na 80-90 ℃, ma na-agbaze ngwa ngwa mgbe ọ jụrụ oyi. Mmiri mmiri ahụ na-adịgide nke ọma na okpomọkụ ụlọ, ọ nwekwara ike ịgbaze na okpomọkụ dị elu, gel ahụ nwekwara ike ịgbanwe ya na mmiri ahụ na okpomọkụ.

O nwere ezigbo mmiri mmiri, mgbasa, njikọta, ịchacha ihe, ime ka ihe dị n'ime ya sie ike, idobe mmiri na nhazi ihe nkiri, yana ike ịmịcha mmanụ. Ihe nkiri ahụ nwere ike, mgbanwe na nghọta dị mma. Ebe ọ bụ na ọ bụghị ionic, ọ nwere ike dakọtara na emulsifiers ndị ọzọ, mana ọ dị mfe iwepụ nnu, ngwọta ahụ kwụsiri ike na oke PH2 — 12. Sodium carboxymethyl cellulose Ngwaahịa a bụ nnu sodium nke cellulose carboxymethyl ether, nke bụ nke anionic cellulose ether, ọ bụ ntụ ntụ ma ọ bụ ihe dị ka ọkara ọcha ma ọ bụ mmiri ara ehi, njupụta 0.5-0.7 g/cubic centimita, ọ fọrọ nke nta ka ọ ghara isi, enweghị ụtọ, hygroscopic. Ọ dị mfe ịgbasa na mmiri gaa na mmiri gelatinous doro anya, anaghị agbaze na ethanol na ihe mgbaze organic ndị ọzọ.

Mgbe pH nke mmiri mmiri dị 6.5 — 8.5, viscosity nke slurry na-ebelata nke ukwuu mgbe pH dị >10 ma ọ bụ <5, arụmọrụ ya kacha mma mgbe pH dị 7. Maka nkwụsi ike okpomọkụ, viscosity na-arị elu ngwa ngwa n'okpuru 20℃, na-agbanwe nwayọ nwayọ na 45℃, na colloid denaturation na viscosity na ihe onwunwe ya na-ebelata nke ukwuu mgbe a na-ekpo ọkụ ruo ogologo oge karịa 80℃. Ọ na-agbaze ngwa ngwa na mmiri, ngwọta doro anya; Ọ na-adịgide nke ukwuu na ngwọta alkaline, ọ dịkwa mfe hydrolyze na ihe gbasara acid. Mgbe uru pH bụ 2-3, mmiri ga-ezo, mmiri ga-ezokwa na ihe gbasara nnu ígwè multivalent. Hydroxypropyl methyl cellulose, nke a makwaara dị ka hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether, bụ nhọrọ nke owu cellulose dị ọcha dị ka ihe eji emepụta ihe, n'okpuru ọnọdụ alkaline site na etherification na nkwadebe pụrụ iche.

A na-agbaze n'ime mmiri na ọtụtụ polar C yana oke kwesịrị ekwesị nke ethanol/mmiri, propanol/mmiri, dichloroethane, wdg., enweghị ike ịgbaze na diethyl ether, acetone, ethanol zuru oke, na-agbaze na mmiri oyi ka ọ bụrụ mmiri doro anya ma ọ bụ nke nwere ntakịrị turbidized colloidal. Mmiri mmiri ahụ nwere ọrụ elu, nghọta dị elu na arụmọrụ kwụsiri ike.HPMCnwere ihe onwunwe nke jel ọkụ. Mgbe ọ kpochara ọkụ, ihe ngwọta mmiri nke ngwaahịa ahụ na-emepụta mmiri ozuzo jel, wee gbazee mgbe ọ jụrụ oyi. Okpomọkụ jel nke nkọwapụta dị iche iche dị iche.