Hydroxypropylmethylcellulose (HPMC) bụ polymer sịntetik nke sitere na cellulose. Dị ka thickener, emulsifier na stabilizer, a na-ejikarị ya na nkà mmụta ọgwụ, nri na ụlọ ọrụ ịchọ mma. A na-ejikwa HPMC n'ihe eji arụ ọrụ dịka ciment, ngwa agha na gypsum iji kwalite ọrụ na njide mmiri. N'isiokwu a, anyị ga-atụle mmepụta nke HPMC na ngwa ya na ụlọ ọrụ dị iche iche.
mmepụta HPMC
A na-emepụta HPMC site na imeghachi cellulose na propylene oxide na methyl chloride n'okpuru ọnọdụ alkaline. Usoro a gụnyere usoro ndị a:
Nzọụkwụ 1: Ọgwụgwọ alkaline nke cellulose
A na-emeso cellulose ahụ na ngwọta caustic nke sodium hydroxide iji gbanwee ya na cellulose alkaline. Ọgwụgwọ a na-eme ka ndị otu hydroxyl nke cellulose na-emeghachi omume, na-eme ka mmeghachi omume na-esote.
Nzọụkwụ 2: Mmeghachi omume na Propylene Oxide
Na nzọụkwụ ọzọ, a na-agbakwunye propylene oxide na cellulose alkaline n'okpuru ọnọdụ okpomọkụ na-achịkwa. A na-eme mmeghachi omume ahụ n'ihu ihe na-akpali akpali dị ka amine tertiary ma ọ bụ alkali metal hydroxide. Propylene oxide na-emeghachi omume na otu hydroxyl nke cellulose iji mepụta hydroxypropyl cellulose.
Kwụpụ 3: Methyl Chloride jikwaa nkeji anọ
Hydroxypropylcellulose wee jiri methyl chloride mee ka ọ mepụta HPMC. A na-eme mmeghachi omume n'okpuru ọnọdụ alkaline, a pụkwara ịchịkwa ogo nke quaternization site n'ịgbanwe ọnụọgụ nke methyl chloride.
A sachara HPMC nke si na ya pụta, kpochaa ma kpoo ya ka o wee nweta ntụ ntụ na-acha ọcha na-enweghị ihe ọ bụla. Ngwongwo nke HPMC, dị ka viscosity, solubility, na gel Njirimara, nwere ike gbanwee site na ịgbanwe ogo nnọchi (DS) nke hydroxypropyl na methyl otu.
Ngwa nke HPMC
HPMC nwere ngwa dịgasị iche iche na ụlọ ọrụ dị iche iche. A tụlere ụfọdụ ngwa ama ama n'okpuru:
Ụlọ ọrụ ọgwụ
A na-eji HPMC eme ihe n'ọtụtụ ebe na ụlọ ọrụ na-emepụta ọgwụ dị ka onye na-ekpu mmiri, ihe nkedo na ihe nkiri mbụ. A na-eji ya na mbadamba mbadamba iji chịkwaa ntọhapụ nke ọgwụ. HPMC na-arụ ọrụ dị ka ihe nkedo site na ịpịkọta ngwakọta ntụ ntụ n'ime ụdị usoro ọgwụgwọ siri ike. Ọ na-eme ka solubility na bioavailability nke ọgwụ ndị na-adịghị mma solubility dị mma site n'ịmepụta nkesa siri ike na nke edo.
ụlọ ọrụ nri
A na-eji HPMC na ụlọ ọrụ nri dị ka emulsifier, thickener na stabilizer. A na-ejikarị ya na ngwaahịa bred, ice cream na ngwaahịa mmiri ara ehi. HPMC na-eme ka nhazi ahụ dịkwuo mma na nkwụsi ike nke ihe oriri site na igbochi nkewa nke ihe oriri na ibelata syneresis. Ọ na-akwalite uto na ndụ nchekwa nke nri.
Ụlọ ọrụ ịchọ mma
A na-eji HPMC eme ihe na ụlọ ọrụ ịchọ mma dị ka thickener na emulsifier. A na-eji ya na ngwaahịa nlekọta anụ ahụ na ntutu dị ka lotions, creams, shampoos na conditioners. HPMC na-eme ka udidi na ịdị n'otu nke ngwaahịa ndị a dịkwuo mma ma na-enye uru na-eme ka mmiri na-edozi ahụ.
ụlọ ọrụ ihe owuwu
A na-eji HPMC na ụlọ ọrụ ihe owuwu dịka ihe mgbakwunye na ciment, ngwa agha na gypsum. Ọ na-eme ka arụ ọrụ na njigide mmiri nke ihe ndị a dịkwuo mma, si otú ahụ na-abawanye ike na ogologo oge ha. HPMC na-ebelatakwa ohere nke mgbawa na mbelata n'oge ihicha.
na ngwụcha
N'ikpeazụ, HPMC bụ polymer na-agbanwe agbanwe na ngwa ngwa na ụlọ ọrụ dị iche iche. A na-akwado ya site na ọgwụgwọ alkali nke cellulose, mmeghachi omume na propylene oxide, na quaternization na methyl chloride. Enwere ike idozi akụrụngwa nke HPMC site na ịgbanwe ogo nnọchi. HPMC na-arụ ọrụ dị mkpa na ụlọ ọrụ ọgwụ, nri, ịchọ mma na ụlọ ọrụ ihe owuwu site na imeziwanye udidi, nkwụsi ike na arụmọrụ nke ngwaahịa dị iche iche. Enweghị nsí ya na ihe ndị dị ndụ na-eme ka ọ bụrụ ihe dị mma na nke bara uru na ụlọ ọrụ ndị a.
Oge nzipu: Ọgọst-03-2023