Hydroxypropyl methyl cellulose, ị maara?

1.HPMCna-ekewa n'ime ngwa ngwa ụdị na ngwa ngwa mgbasa ụdị.

Ụdị mgbasa ozi ngwa ngwa HPMC ka ejiri mkpụrụedemede S, na glioxal ga-agbakwunye n'oge usoro mmepụta.

Ụdị ngwa ngwa HPMC anaghị agbakwunye mkpụrụedemede ọ bụla, dịka "100000" pụtara "100000 viscosity.

2. Na ma ọ bụ na-enweghị S, njirimara dị iche iche

HPMC na-agbasa ngwa ngwa na-agbasa ngwa ngwa mgbe ọ zutere mmiri oyi wee pụọ n'ime mmiri. N'oge a, mmiri mmiri enweghị viscosity, n'ihi na HPMC na-agbasasị naanị na mmiri na-enweghị ezigbo mgbasa. Mgbe ihe dị ka nkeji abụọ gachara, viscosity nke mmiri mmiri na-eji nwayọọ nwayọọ na-abawanye, na-akpụ a transperent viscous Thick colloid.

Enwere ike ịgbasa HPMC ngwa ngwa n'ime mmiri ọkụ na ihe dịka 70 Celsius. Mgbe okpomọkụ na-adaba n'otu ọnọdụ okpomọkụ, viscosity ga-apụta nwayọọ nwayọọ ruo mgbe a ga-emepụta colloid viscous transperent.

3.Na ma ọ bụ na-enweghị S, ebumnuche dị iche

Enwere ike iji HPMC ozugbo na ntụ ntụ na ngwa agha. N'ime gluu mmiri mmiri, agba na ngwaahịa ịsacha, a ga-enwe mkpokọta mkpokọta na enweghị ike iji ya.

Gbasara ngwa ngwaHPMCnwere ọtụtụ ngwa na enwere ike iji ya na ntụ ntụ, ngwa ngwa, gluu mmiri mmiri, agba, na ngwaahịa ịsa ahụ na-enweghị ihe ọ bụla.

4.Dissolving usoro

4-1. Were mmiri ọkụ achọrọ, tinye ya n'ime akpa ma kpoo ya n'elu 80 Celsius C, ma jiri nwayọọ nwayọọ tinye ngwaahịa a n'okpuru mkpali nwayọọ. Cellulose na-ese n'elu mmiri na mbụ, mana ejiri nwayọọ nwayọọ gbasaa ka ọ ghọọ otu slurry. A na-eme ka ihe ngwọta dị mma mgbe ọ na-akpali.

4-2. N'aka nke ọzọ, kpoo 1/3 ma ọ bụ 2/3 nke mmiri ọkụ ka ọ dị elu karịa 85 Celsius C, tinye cellulose iji nweta slurry mmiri ọkụ, tinyezie ihe fọdụrụ nke mmiri oyi, nọgide na-akpali akpali, ma mee ka ngwakọta ahụ dị jụụ.

4-3. Ntupu nke cellulose dị nnọọ mma, ọ na-adịkwa dị ka obere irighiri ihe n'otu n'otu n'ime ntụ ntụ a kpalitere, ọ na-agbaze ngwa ngwa mgbe ọ zutere mmiri iji mepụta viscosity achọrọ.

4-4. Jiri nwayọọ na ọbụna tinye cellulose n'ime ụlọ okpomọkụ, ma nọgide na-akpali ruo mgbe a ga-emepụta ngwọta na-enweghị atụ.

5.Gịnị na-emetụta njide mmiri nke hydroxypropyl methyl cellulose?

5-1. Cellulose ether HPMC homogeneity

A na-ekesa HPMC na-emeghachi omume nke ọma, metoxyl na hydroxypropoxyl, yana ọnụ ọgụgụ njide mmiri dị elu.

5-2. Cellulose ether HPMC thermal gel okpomọkụ

Nke dị elu nke okpomọkụ gel thermal, nke dị elu nke njide mmiri; ma ọ bụghị ya, na-ebelata ọnụ ọgụgụ njide mmiri.

5-3. Cellulose Ether HPMC viscosity

Mgbe viscosity nke HPMC na-abawanye, njigide mmiri na-abawanye; mgbe viscosity ruru ọkwa ụfọdụ, mmụba nke njide mmiri na-eme ka ọ dị nro.

6.Mgbakwunye ego nke cellulose ether HPMC

Nke ka ukwuu nke cellulose etherHPMCagbakwunyere, na-abawanye ụba mmiri na-eme ka ọ dịkwuo mma mmetụta njide mmiri.

Na nso nke 0.25-0.6%, njigide mmiri na-abawanye ngwa ngwa na mmụba nke mgbakwunye ego; mgbe ego mgbakwunye na-abawanye ụba, mmụba nke njigide mmiri na-ebelata.