Ị maara maka hypromellose?

Hydroxypropyl methylcellulose (aha INN: Hypromellose), nke a na-akpọkwa hypromellose (hydroxypropyl methylcellulose, nke a na-akpọ 'synthesis').HPMC), bụ ụdị ethers dị iche iche nke na-abụghị nke ionic cellulose. Ọ bụ polima nke na-anaghị arụ ọrụ, nke na-anaghị arụ ọrụ, nke a na-ejikarị eme ihe dị ka mmanụ na ọgwụgwọ anya, ma ọ bụ dị ka ihe na-enye aka ma ọ bụ ihe na-enye aka na ọgwụ ọnụ, a na-ahụkarịkwa ya n'ọtụtụ ngwaahịa azụmaahịa dị iche iche.

Dịka ihe mgbakwunye nri, hypromellose nwere ike ịrụ ọrụ ndị a: emulsifier, thickener, ihe na-egbochi ihe na ihe nnọchi maka gelatin anụmanụ. Koodu ya (E-code) dị na Codex Alimentarius bụ E464.

Njirimara kemịkalụ:

Ngwaahịa emechara nkehydroxypropyl methylcelluloseỌ bụ ntụ ntụ ọcha ma ọ bụ ọcha na-enweghị eriri siri ike, nha ihe ndị ahụ na-agafe na sieve 80-mesh. Oke nke ọdịnaya methoxyl na ọdịnaya hydroxypropyl nke ngwaahịa emechara dị iche, viscosity dịkwa iche, ya mere ọ na-aghọ ụdị dị iche iche nwere arụmọrụ dị iche iche. O nwere njirimara nke ịbụ onye a na-agbaze na mmiri oyi na enweghị ike ịgbaze na mmiri ọkụ yiri methyl cellulose, ike ya na ihe mgbaze organic karịrị nke mmiri. Enwere ike ịgbaze ya na methanol na ethanol anhydrous, enwere ike ịgbazekwa ya na hydrocarbons chlorine dị ka dichloro methane, trichloroethane, na ihe mgbaze organic dị ka acetone, isopropanol, na diacetone alcohol. Mgbe a gbazere ya na mmiri, ọ ga-ejikọta ya na molekul mmiri iji mepụta colloid. Ọ kwụsiri ike na acid na alkali, ọ naghịkwa emetụta ya na oke pH = 2 ~ 12. Hypromellose, ọ bụ ezie na ọ bụghị ihe na-egbu egbu, ọ na-ere ọkụ ma na-emeghachi omume ike na ihe ndị na-eme ka oxidizing dị.

Ọbara ọbara nke ngwaahịa HPMC na-abawanye ka mmụba nke mkpokọta na ibu molekul na-abawanye, mgbe okpomọkụ ahụ rịrị elu, ọbara ọbara ya na-amalite ibelata. Mgbe ọ ruru okpomọkụ ụfọdụ, ọbara ọbara na-ebili na mberede wee pụta. elu nke. Mmiri mmiri ya na-adịgide adịgide na okpomọkụ ụlọ, ewezuga na enzymes nwere ike imebi ya, ọbara ọbara ya n'ozuzu ya enweghịkwa ihe na-emebi emebi. O nwere ihe pụrụ iche na-eme ka ọ dị nro, ezigbo ihe na-eme ka ọ dị nro na ọrụ elu.

Ime:

Mgbe ejiri alkali gwọọ cellulose ahụ, anion alkoxy nke deprotonation nke otu hydroxyl mepụtara nwere ike ịgbakwunye propylene oxide iji mepụta hydroxypropyl cellulose ether; ọ nwekwara ike ịgbakọta na methyl chloride iji mepụta methyl cellulose ether. A na-emepụta Hydroxypropyl methylcellulose mgbe emechara mmeghachi omume abụọ ahụ n'otu oge.

Iji:

Ojiji hydroxypropyl methylcellulose yiri nke ether cellulose ndị ọzọ. A na-ejikarị ya eme ihe dị ka ihe na-agbasa ihe, ihe na-egbochi ihe, ihe na-eme ka ihe sie ike, ihe na-eme ka ihe sie ike, ihe na-eme ka ihe sie ike, ihe na-eme ka ihe sie ike na ihe na-arapara n'ọtụtụ ebe. Ọ ka mma karịa ether cellulose ndị ọzọ ma a bịa n'ihe gbasara ịgbaze ihe, ịgbasa ihe, nghọta na iguzogide enzyme.

N'ụlọ ọrụ nri na ọgwụ, a na-eji ya eme ihe dị ka ihe mgbakwunye. A na-eji ya eme ihe dị ka ihe na-arapara, ihe na-eme ka ọ sie ike, ihe na-agbasa ihe, ihe na-eme ka ihe sie ike, ihe na-eme ka ihe sie ike na ihe na-eme ka ihe sie ike. Ọ naghị egbu egbu, ọ nweghị uru nri, ọ dịghịkwa agbanwe mgbanwe metabolism.

Na mgbakwunye,HPMCnwere ngwa na polymerization nke resin sịntetik, petrochemicals, seramiiki, imepụta akwụkwọ, akpụkpọ anụ, ihe ịchọ mma, mkpuchi, ihe owuwu ụlọ na efere mbipụta fotosensitive.