HPMC ọ ga-aza na mmiri?

Hydroxypropyl methylcellulose (HPMC) bụ ihe na-emekarị polymer nwere ọtụtụ ngwa ụlọ ọrụ mmepụta ihe, karịsịa na mpaghara ọgwụ, nri, ihe ụlọ na ihe ịchọ mma. Ya mmiri solubility na ndim Njirimara na-eme ka ọ bụrụ ezigbo thickener, stabilizer na ihe nkiri mbụ. Isiokwu a ga-atụle n'ụzọ zuru ezu na mgbasa na ọzịza usoro nke HPMC na mmiri, yana mkpa ya dị iche iche ngwa.

1. Ọdịdị na Njirimara nke HPMC
HPMC bụ ether cellulose na-abụghị ionic emepụtara site na mgbanwe kemịkalụ nke cellulose. Ọdịdị kemịkal ya nwere ihe mgbakwunye methyl na hydroxypropyl, nke na-edochi ụfọdụ n'ime otu hydroxyl na cellulose molecular chain, na-enye ihe HPMC dị iche na nke cellulose eke. N'ihi nhazi ya pụrụ iche, HPMC nwere njirimara ndị a:

Mmiri solubility: HPMC nwere ike etisasịwo na oyi na mmiri ọkụ na nwere ike ndim Njirimara.

Nkwụsi ike: HPMC nwere nnukwu mgbanwe maka ụkpụrụ pH ma nwee ike ịnọgidesi ike n'okpuru ọnọdụ acidic na alkaline.
Gelation thermal: HPMC nwere njirimara nke gelation thermal. Mgbe okpomọkụ na-ebili, ihe ngwọta mmiri HPMC ga-etolite jel wee gbazee mgbe okpomọkụ dara.
2. Usoro mgbasawanye nke HPMC na mmiri
Mgbe HPMC batara na mmiri, otu hydrophilic dị n'agbụ molekụla ya (dị ka hydroxyl na hydroxypropyl) ga-ejikọta ya na ụmụ irighiri mmiri iji mepụta njikọ nke hydrogen. Usoro a na-eme ka agbụ molekul HPMC jiri nwayọọ nwayọọ na-amịkọrọ mmiri wee gbasaa. Enwere ike kewaa usoro mgbasawanye nke HPMC n'ime usoro ndị a:

2.1 Ogbo nnabata mmiri izizi
Mgbe mbụ ụmụ irighiri ihe HPMC batara na mmiri, ụmụ irighiri mmiri ga-abanye ngwa ngwa n'ime elu nke ihe ndị ahụ, na-eme ka elu ahụ gbasaa. Usoro a bụ n'ihi na mmekọrịta siri ike dị n'etiti ìgwè hydrophilic dị na molekul HPMC na mmiri mmiri. Ebe ọ bụ na HPMC n'onwe ya abụghị ionic, ọ gaghị agbaze ngwa ngwa dị ka ionic polymers, kama ọ ga-amịkọrọ mmiri ma gbasaa mbụ.

2.2 Ogbo mgbasawanye nke ime
Ka oge na-aga, ụmụ irighiri mmiri na-eji nwayọọ nwayọọ na-abanye n'ime ihe ndị ahụ, na-eme ka agbụ cellulose dị n'ime ụmụ irighiri ihe malite ịgbasa. Ọnụego mgbasawanye nke ụmụ irighiri ihe HPMC ga-ebelata n'oge a n'ihi na ntinye nke mkpụrụ ndụ mmiri kwesịrị imeri nhazi siri ike nke agbụ molekụla n'ime HPMC.

2.3 Ogbo mgbasa zuru oke
Mgbe ogologo oge gachara, ụmụ irighiri ihe HPMC ga-agbari kpamkpam n'ime mmiri iji mepụta ngwọta viscous edo. N'oge a, a na-akpụ agbụ molekụla nke HPMC na mmiri na-enweghị usoro, na ngwọta na-agbaze site na mmekọrịta intermolecular. The viscosity nke HPMC ngwọta nwere njikọ chiri anya ya molekụla arọ, ngwọta itinye uche na mgbasa okpomọkụ.

3. Ihe ndị na-emetụta mgbasawanye na mgbasa nke HPMC
3.1 Okpomọkụ
Omume mgbasa nke HPMC nwere njikọ chiri anya na okpomọkụ mmiri. N'ozuzu, HPMC nwere ike agbaze na mmiri oyi na mmiri ọkụ, mana usoro mgbasa na-akpa àgwà dị iche iche na okpomọkụ dị iche iche. N'ime mmiri oyi, HPMC na-ebukarị mmiri na-ebu ụzọ zaa, wee jiri nwayọọ nwayọọ gbazee; mgbe ị nọ na mmiri ọkụ, HPMC ga-enweta gelation thermal na ụfọdụ okpomọkụ, nke pụtara na ọ na-emepụta gel kama ngwọta na okpomọkụ dị elu.

3.2 itinye uche
Ọnụ ọgụgụ dị elu nke ngwọta HPMC, na-eji nwayọọ nwayọọ na-abawanye ụba ụbara uru, n'ihi na ọnụ ọgụgụ nke mkpụrụ ndụ mmiri dị na ngwọta ntinye uche dị elu nke enwere ike iji jikọta ya na eriri molecular HPMC dị oke. Na mgbakwunye, viscosity nke ngwọta ga-abawanye nke ukwuu na mmụba nke itinye uche.

3.3 nha nha
The urughuru size nke HPMC na-emetụta ya mgbasawanye na mgbasa ọnụego. Ụmụ irighiri ihe ndị dị nta na-amịkọrọ mmiri ma zaa ngwa ngwa n'ihi nnukwu akụkụ elu ha, ebe nnukwu ahụ na-amịkọrọ mmiri nwayọọ nwayọọ ma na-ewe ogologo oge iji gbazee kpamkpam.

3.4 pH uru
Ọ bụ ezie na HPMC nwere ike ime mgbanwe na pH, ọzịza ya na mgbaze omume nwere ike imetụta n'okpuru oke acidic ma ọ bụ alkaline ọnọdụ. N'okpuru nnọpụiche na ọnọdụ acidic na-adịghị ike na nke na-adịghị ike, usoro ọzịza na mgbasa nke HPMC kwụsiri ike.

4. Ọrụ HPMC na ngwa dị iche iche
4.1 Ụlọ ọrụ ọgwụ
N'ime ụlọ ọrụ na-emepụta ọgwụ, a na-eji HPMC eme ihe n'ọtụtụ ebe dị ka onye na-ekekọta ma na-ekewapụ na mbadamba ọgwụ. Ebe ọ bụ na HPMC na-aza na mmiri ma na-emepụta gel, nke a na-enyere aka belata ọnụego ntọhapụ nke ọgwụ ahụ, si otú ahụ nweta mmetụta ntọhapụ a na-achịkwa. Tụkwasị na nke ahụ, HPMC nwekwara ike iji dị ka isi ihe na-ekpuchi ihe nkiri ọgwụ iji mee ka nkwụsi ike nke ọgwụ ahụ dịkwuo elu.

4.2 Ihe owuwu ụlọ
HPMC na-arụkwa ọrụ dị mkpa n'ihe eji arụ ụlọ, ọkachasị dị ka ihe na-ekpu mmiri na ihe na-ejide mmiri maka ciment mortar na gypsum. Ihe onwunwe ọzịza nke HPMC n'ime ihe ndị a na-enyere ya aka idowe mmiri na oke okpomọkụ ma ọ bụ gburugburu akọrọ, si otú a na-egbochi nhazi nke cracks na imeziwanye ike njikọ nke ihe ahụ.

4.3 Ụlọ ọrụ nri
N'ụlọ ọrụ nri, a na-eji HPMC eme ihe dị ka thickener, emulsifier na stabilizer. Dịka ọmụmaatụ, n'ime ngwaahịa esi nri, HPMC nwere ike melite nkwụsi ike nke mgwakota agwa ma melite ọdịdị na uto nke ngwaahịa ahụ. Tụkwasị na nke ahụ, a pụkwara iji ihe ndị na-egbuke egbuke nke HPMC na-emepụta ihe oriri na-enweghị abụba ma ọ bụ abụba na-enweghị abụba iji mee ka satiety na nkwụsi ike ha dịkwuo elu.

4.4 Ihe ịchọ mma
N'ihe ịchọ mma, a na-eji HPMC eme ihe n'ọtụtụ ebe na ngwaahịa nlekọta anụ ahụ, shampoos na conditioners dị ka thickener na stabilizer. Gel nke a na-emepụta site na mgbasawanye nke HPMC na mmiri na-enyere aka imeziwanye ọdịdị nke ngwaahịa ahụ ma mepụta ihe nkiri nchebe na akpụkpọ ahụ iji mee ka akpụkpọ ahụ dị ọcha.

5. Nchịkọta
Ihe onwunwe ọzịza nke HPMC na mmiri bụ ihe ndabere maka ngwa ya sara mbara. HPMC na-agbasawanye site na ịmịnye mmiri iji mepụta ngwọta ma ọ bụ gel nwere viscosity. Ihe onwunwe a na-eme ka a na-eji ya eme ihe n'ọtụtụ ebe dị ka ọgwụ, ihe owuwu, nri na ihe ịchọ mma.