Hydroxypylththththththylcelllose (hpmc)bụ nke na-abụghị nke iic cellulose ether nke sitere na sellulose site na ngbanwe kemịkal. A na-ejikarị ya rụọ ọrụ ubi, ọgwụ, nri na ihe ịchọ mma. Usoro ya na njiri mara ya na njirimara ngwaahịa na-enye ya arụmọrụ pụrụ iche ma nwee ike izute ọtụtụ mkpa ọrụ mmepụta ihe.
1. Synthesis nke Hydroxypylthylthylthylthyl
Nkwadebe nke Kimacell®hpmc na-eji eke sellulose dị ka akụrụngwa na-agbanwegharị ya site na ọgwụgwọ alkali na mmeghachi omume gị. Usoro usoro akọwapụtara gụnyere usoro ndị a:
Alkalization nke cellose
A na-agwakọta akụrụngwa cellulose (dị ka osisi pulp ma ọ bụ osisi pulp) na sodium hydroxide ihe ngwọta na ịmịkọrọ ụfọdụ okpomọkụ na nrụgide iji mepụta alkali cellulose. Usoro Alkalalization na-agbasawanye igwe cellular ma na-eme ka ọrụ ya na onye na-elekọta ya na-elekọta ya.
Mmeghachi omume eatieration
A na-emeghachi omume alkali na-emeghachi omume na formaldehyde na proslene glycoly oxide iji mepụta hydropyylylylylylylylylylylylylylylylpylyl. N'oge mmeghachi omume, metylition na mmeghachi omume hydroxypropy na-eme n'otu oge, na-eji otu hydroxy dị na ndọtị ahụ cphmc na otu njiri mara (DS) na ndọchi obi (MS).
Neutralization na ịsacha
Mgbe emechara mmeghachi omume ahụ rụchara, a na-agbakwunye ihe acidic acidic ka a na-etinye mmiri ngwa ngwa ngwa ngwa ngwa ngwa ngwa ngwa ngwa ngwa, wee sachaa mmiri iji wepu akụrụngwa na-enweghị atụ na ngwaahịa iji nweta hpmc dị ọcha.
Ihicha ma gwepịa
A na-akpọ hpmc a mịrị amị na obere mmiri na -akpata mmiri ma gwepịa n'ime ntụ iji nweta ngwaahịa ikpeazụ. Enwere ike ịgbanwe nha ngwaahịa ahụ dịka ngwa achọrọ.
2. Njirimara ngwaahịa nke hydropyypylthylthylthyl
HPMC nwere ihe pụrụ iche anụ ahụ na kemịkal, nke na-eme ka ọ bụrụ nke ọma n'ọtụtụ ngwa:
Ezigbo mmiri solublity
Enwere ike ịgbasa hpmc ngwa ngwa na mmiri oyi iji mepụta ihe mgbochi colloidal, na mmiri na-esi ike na-emetụtakwa ya. HPMC bụ mmiri na-ekpo ọkụ na mmiri ọkụ, mana ọ nwere ike iweghachi solublity mgbe mmiri jụrụ. Ngwongwo a na - eme ka ọ dị mma maka ihe nkiri na - achọ arụmọrụ ikuku.
Ngwongwo kemịkalụ kemịkalụ
HPMC bụ ihe na-abụghị ionic nwere ezigbo ndidi na acid, alkalis na nnu, ma nwee ike ịnọ n'ọnọdụ dị iche iche n'okpuru ọnọdụ plọ dị iche iche.
Ezigbo ihe na ngwa agha
Ọkpụkpụ osisi nke HPMC nwere mmetụta dị ukwuu, yana visose ya na-abawanye na mmụba nke ịta na oke molecular. Njirimara ya na ihe nkiri na-akpụ akpụ na-eme ka ọ rụọ ọrụ nke ọma na mkpuchi na adresives.
Ezigbo ihe ọkụkụ
Ngwọta HPMC na-aga n'ihu na-agbanwe agbanwe mgbe a na-agbagharị ma laghachi na mmiri na-aga n'ihu. A na-eji ihe ndị a na-eme ihe ọkụkụ na-eji ọtụtụ ihe na-ewu ụlọ (dịka stoime ciment) iji melite arụmọrụ owuwu.
Na-anaghị egbu egbu na biocompupu
Ebe ọ bụ na a na-enweta HPMC sitere na sellulose ma nwee ezigbo biocom na nchekwa, a na-ejikarị ya ihe mgbakwunye nri ọgwụ, dị ka matrix ihe ndị na-achịkwa ọgwụ na-achịkwa.
Mgbanwe iji mezie arụmọrụ
Enwere ike idozi ogo nke Kimacell®hpmc dịka achọrọ, si na viscosity, viscosity na akụrụngwa ndị ọzọ iji mezuo ngwa ọrụ nke ngwa ọrụ.
3. Ngwa na atụmanya
Hpmc Enwere ike iji ya mee ihe dị ka ngwa agha na mmiri na-eme ka ihe owuwu ahụ, dị ka ọgwụ na-ahụ maka ọgwụ na-eme ọgwụ, yana dịka emulsifier na ụlọ ọrụ nri. Site n'ọgba nke kemịkal na-acha akwụkwọ ndụ na mmepe na-adịgide adịgide, njikọ dị ala na mmepe nke HPMC ga-abụ ihe na-elekwasị anya nyocha nke ọdịnihu.
Hydroxypyl Methylcelllose abụrụla ihe dị mkpa na ihe dị mkpa na ụlọ ọrụ ọgbara ọhụrụ na ndụ ya kwa ụbọchị na arụmọrụ ya na nke ọma.
Oge post: Jan-18-2025