Okwu Mmalite nke Hec (Hydroxyethyth Cellulose) na HPMC (Hydroxypyl Methylcelllose)
Hydroxyythythythythythythythythythythythythythythythythythythythythythyththyth methylcellose (hpmc) dị mkpa cellivase na-eji ọtụtụ ụlọ ọrụ, gụnyere ọgwụ, nhazi, nlekọta onwe onye, na nri. A na - enweta HCMC na HPMC sitere na Cellulose, nke kachasị n'okike polymer sitere n'okike dị na mgbidi osisi, nke a maara maka ike ya na nke ọma.
Hydroxyethythythythyth Cellulose (HEC)
Ihe Okike na Njirimara
Hydroxyethythythyth Cellulose bụ onye na-abụghị nke ionic, mmiri na-acha uhie uhie sitere na cellulose site na usoro etherification. Ihe owuwu kemịkal ya gụnyere ethlene oxide dị iche iche (-ch2CH9OH 2OH) jikọtara ya na ballose backbone, nke na-eme ka mmiri na-eme ka mmiri sie ike. HEC na-egosi dị ka ọcha na-acha ọcha na-acha ọcha ma amaara maka ụdị vishSt na ikike nke ịcha akwụkwọ.
Usoro synhesis
Nchịkọta nke Hec gụnyere mmeghachi omume nke cellose na etlene oxide n'okpuru ọnọdụ alkaline. Usoro a gụnyere:
Alkalization: A na-emeso cellulose na alkali siri ike, dị ka sodium hydroxide, iji mepụta alkali cellulose.
Etherification: Ethylene oxide is then added to the alkali cellulose, resulting in the formation of hydroxyethyl cellulose.
Arụmọpụ na ihe dị ọcha: Akọrọ ngwakọta na-anọpụ iche ma dị ọcha iji wepu site-ngwaahịa, na-ekwenye ngwaahịa Hec ikpeazụ.
Ngwa
A na-eji hec dị ka ọrụ dị iche iche n'ihi ihe pụrụ iche ya:
A na-eji ọgwụ na-eme ihe nkiri: eji ihe nkiri, fim nke mbụ, na mmachi na gelsical, ude, na mmanu.
Nlekọta onwe onye: achọtara na shampoos, igwe, lotions, na ncha dị ka nke ukwu na emunsufier.
Eserese na mkpuchi: Na-eme ka viscosity, mgbochi mmiri, na ihe ndị na-akpụ akpụ ihe nkiri na ihe ndị na-eme ihe nkiri.
Ihe owuwu: Na-eje ozi dị ka ihe mgbochi, Peadener, na mmiri na-aga n'ihu na ngwaahịa ciment na ngwaahịa gypsum.
Uru
HEC na-enye ọtụtụ uru:
Ọdịdị na-abụghị nke Ionic: Mee ka ọ dakọtara na ụdị ionic na nke na-abụghị nke ionic.
Mmiri solulity: Ọ dị mfe na mmiri oyi na mmiri ọkụ, na-akpụzi ngwọta doro anya.
Arụmọrụ dị iche iche: na-enye njikwa ihe ndabara dị iche iche.
Biocom: Ọ dị mma maka iji ya na ọgwụ na ngwaahịa nlekọta ọgwụ.
Hydroxypylththththththylcelllose (hpmc)
Ihe Okike na Njirimara
Otu ihe eji eme ihe na-abụghị ionic na-abụghị ionic na-abụghị nke ionic, nke e ji amata otu hydroxy na Methilose molulu na methoxy (-Hoch3) na otu -ch2chohchyl (-ch2chohchyl (-CH2chohchyl (-ch2chohyl (-ch2chohyl (-ch2chohyl (-ch2chohyl (-ch2chohyl (-ch2chohyl (-ch2chohchyl Mgbanwe a na-enye ihe pụrụ iche ọkụ ọkụ pụrụ iche ma na-eme hpmc soluble na ma mmiri oyi na mmiri ọkụ. HPMC dịkwa ka ọcha na-acha ọcha.
Usoro synhesis
Mmepụta HPMC na-emetụta usoro nke a bụ usoro a:
Alkalization: A na-emeso cellulose na alkali siri ike iji mepụta alkali cellulose.
Etetherification: Nchikota Methyl chloride na proslene oxide a na-agbakwunye na alkali cellulose, na-eduga na nguzobe hydropyylylthylthylthylthylthylthylthyl.
A na-eme ngwa ngwa na ihe dị ọcha: A na-eme ngwakọta ahụ, a na-eme usoro dị ọcha iji nweta ngwaahịa HPMC ikpeazụ.
Ngwa
HPMC nke HPMC na-enye ya ohere iji ya na mpaghara dị iche iche:
Ọkpụkpụ ọgwụ: Ọrụ na-arụ ọrụ, ihe mgbochi, na ihe nkiri na-ese ihe na mbadamba mbadamba.
Industrylọ ọrụ nri: na-eje ozi dị ka nke na-eto eto, sie ike, na emissifier ke hazie nri.
Ihe owuwu: Ejiri ya dị ka onye na - ejide mmiri, na njigide mmiri, na nrapado na mịrị amị na ciments.
Nlekọta onwe onye: Achọtara ya na ezé ezé, shampoos, na lotions maka ndị na-emekarị ihe ma kwụsie ike.
Uru
HPMC bụ mma maka ọtụtụ ihe:
Gloation ikuku: na-egosi galation na kpo oku, baa uru na ngwa ọgwụ na ngwa nri.
Solubality: soluble na mmiri oyi na mmiri ọkụ ma na-ekpo ọkụ, na-enye ohere maka iji ụdị dị iche iche.
Ike fim: na -eme ihe nkiri siri ike, dị mma maka mkpuchi na usoro ntọhapụ ya.
Ọgwụ na-abụghị ihe na-egbu egbu: nchekwa maka iji nri na ngwa ọgwụ, nwere ezigbo biocompatibility.
Atụnyere HEC na HPMC
Myirịta
Mmalite: a na-enweta ha site na mkpụrụ osisi celluse ma soro usoro mmepụta ahụ na-ekerịta nke a.
Njirimara: Ma HPMC bụ nke na-abụghị nke ionic, mmiri na-agbanye mmiri nwere ezigbo ndị na-amị amị, na-akpụ akpụ ihe nkiri, ma mezie ihe ndị na-edozi ahụ.
Ngwa: A na-eji ha na ụdị ụlọ ọrụ dị iche iche, gụnyere ọgwụ, nlekọta onwe onye, na owuwu.
Mgbagwojunsonity
Ikike kemịkal: hec nwere otu Hydroxyethyyyl, ebe Hpmc nwere methoxy na hydroxyl dị iche iche.
Ngwunye ikuku: HPMC gosipụtara ihu igwe, n'adịghị HEC, na-eme ya kwesịrị ekwesị maka ngwa ndị akọwapụtara ebe mgbazinye oke ọkụ bara uru.
Solubality: Mgbe ha abụọ na-agbanye mmiri, ọnụnọ nke otu hydroxyyl na HPMC na-eme ka sonyere ya na sonvalic ma e jiri ya tụnyere hec.
Hydroxyethythythythythythythythythythythythythythythythythythythythyth methypypyl bụ ihe dị mkpa cellyllose nwere ngwa dị iche iche na ụlọ ọrụ dị iche iche n'ihi ihe ndị na-emepụta kemịkal ha pụrụ iche na arụ ọrụ ha. A na-eji anya hEC kpọrọ ihe maka viscosity ya dị elu na ndakọrịta dị iche iche, ebe a na-ejikwa HPMC dị iche site na Njirimara GPMA na-egosi site na akụrụngwa ndị na-agbakọta ọkụ na ndọkpụ. Ghọta Njirimara, njikọ, na ngwa nke polymers ndị a na-enyere aka n'ịhọrọ usoro cellose nke kwesịrị ekwesị maka mkpa ụlọ ọrụ mmepụta ahụ, si otú a na-eme ka arụmọrụ na ogo nke ọgwụgwụ.
Oge post: Feb-18-2025