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Hydroxypropyl Methyl Cellulose (HPMC)
Hydroxypropyl methyl cellulose, mee ka propyl methyl cellulose dị mfe (HPMC hydroxypropylmethylcellulose, abbreviation), ọ ga-abụ nke ọtụtụ ether na-abụghị ionic cellulose ether agwakọta. Ọ bụ polymer synthetic nke na-adịghị arụ ọrụ, viscoelastic nke a na-ejikarị na ophthalmology dị ka mmanu mmanu, ma ọ bụ dị ka ihe na-emepụta ma ọ bụ ihe na-emepụta ọgwụ ọnụ, nke a na-ahụkarị n'ụdị ngwa ahịa dị iche iche. Enwere ike iji hydroxypropyl cellulose mee ihe dị ka ihe mgbakwunye nri, emulsifier, thickener, onye nkwusioru na ihe nnọchi gelatin anụmanụ.
NGWA Nkọwapụta Ọdịdị Ọcha ntụ ntụ Okpomọkụ ire ere 200min Okpomọkụ ngbanwe agba 190-200 ℃ Viscosity 400 Uru PH 5-8 Njupụta 1.39g / cm3 Okpomọkụ carbonization 280-300 ℃ Ụdị Nri nri Ọdịnaya 99% Esemokwu dị n'elu 42-56dyne/cm maka 2% ngwọta mmiri -
Hydroxypropyl Methylcellulose (MHPC)
Hydroxypropyl methylcellulose (MHPC) enweghị isi, enweghị ụtọ, cellulose ethers na-adịghị egbu egbu nke nwere otu hyrdroxyl na agbụ cellulose dochie anya methoxy ma ọ bụ hydroxypropyl otu nwere ezigbo mmiri solubility. HPMC F60S bụ ọkwa viscosity dị elu nke a na-eji dị ka thickener, ihe nkedo, na ihe nkiri bụbu na agrochemicals, coatings, ceramics, adhesives, inks, na dị iche iche ngwa ndị ọzọ.
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Hydroxyethyl cellulose (HEC)
Hydroxyethyl Cellulose (HEC) bụ ihe na-abụghị ionic, mmiri-soluble polymer ewepụtara ụdị cellulose site a usoro nke chemical na anụ ahụ Filiks. viscous gel solution.Mgbe pH na ngwọta 2 ruo 12, ihe ngwọta ahụ dị nnọọ mma. Ebe ọ bụ na òtù HEC bụ onye na-adịghị ahụ maka mmiri mmiri, ọ gaghị emeghachi ya na anions ma ọ bụ cations ndị ọzọ na enweghị mmetụta na nnu.
Ma HEC molecule nwere ike ịmepụta esterification, etherification, n'ihi ya, ọ ga-ekwe omume ime ka ọ ghara ịdị na mmiri ma ọ bụ meziwanye ihe onwunwe ya. HEC nwekwara ikike ịmepụta ihe nkiri na ọrụ elu.
