Okwu mmalite nke Hydroxyethylcellulose (HEC):
Hydroxyethylcellulose bụ ihe sitere na cellulose, polysaccharide na-emekarị nke a na-ahụ na mgbidi cell nke osisi.Ihe mejupụtara cellulose bụ nkeji glucose ugboro ugboro jikọtara ya na njikọ β-1,4 glycosidic.A na-enweta Hydroxyethylcellulose site n'ịgbanwe cellulose site na iwebata otu hydroxyethyl (-CH2CH2OH) n'ime ọkpụkpụ azụ ya.
Usoro mmepụta:
Etherification nke Cellulose: mmepụta nke HEC gụnyere etherification nke cellulose.Usoro a na-amalitekarị site na cellulose sitere na osisi pulp ma ọ bụ akwa owu.
Mmeghachi omume na Ethylene Oxide: Cellulose na-emeghachi omume na ethylene oxide n'okpuru ọnọdụ alkaline.Mmeghachi omume a na-eduga na nnọchi nke otu hydroxyl na azụ azụ cellulose na otu hydroxyethyl, na-ebute hydroxyethylcellulose.
Ọcha: A na-asachapụ ngwaahịa ahụ ka ọ wepụ ihe ọ bụla reagents na ngwaahịa akụkụ.
Njirimara nke Hydroxyethylcellulose:
Solubility: HEC bụ soluble na ma oyi na mmiri ọkụ, na-eme ka o doo anya na ngwọta turbid dị ntakịrị dabere na ntinye uche.
Viscosity: Ọ na-egosipụta omume pseudoplastic, nke pụtara viscosity ya na-ebelata na ọnụ ọgụgụ shear na-abawanye.Enwere ike idozi viscosity nke ngwọta HEC site na ihe dị iche iche dị ka itinye uche na ogo nke nnọchi.
Ihe nkiri na-emepụta ihe nkiri: HEC nwere ike ịmepụta ihe nkiri na-agbanwe agbanwe na nke na-ejikọta ọnụ, na-eme ka ọ baa uru na ngwa dị iche iche ebe achọrọ ịmepụta ihe nkiri.
Onye na-ahụ maka ịdị arọ: Otu n'ime isi ojiji nke HEC bụ ihe na-eme ka ọ dị arọ n'ụdị dị iche iche, dị ka ihe ịchọ mma, ọgwụ na ngwaahịa nlekọta onwe onye.
Ngwa nke Hydroxyethylcellulose:
Ngwa ịchọ mma na ngwaahịa nlekọta onwe onye: A na-eji HEC eme ihe n'ọtụtụ ebe na ihe ịchọ mma na ngwaahịa nlekọta onwe onye dị ka onye na-agbapụta, stabilizer, na onye na-emepụta ihe nkiri na ngwaahịa dị ka lotions, creams, shampoos, na ntanya eze.
Pharmaceuticals: N'ime usoro ọgwụ, HEC na-eje ozi dị ka onye na-akwụsịtụ, ihe na-ekekọta, na matrix na-achịkwa na mkpuchi mbadamba na usoro ọnụ.
Agba na mkpuchi: A na-eji HEC mee ihe na agba na mkpuchi mmiri dị ka ihe na-eme ka ọkpụkpụ na rheology modifier iji chịkwaa viscosity na melite ngwa ngwa.
Ụlọ ọrụ nri: N'ụlọ ọrụ nri, a na-eji HEC eme ihe dị ka ihe na-eme ka ọ sie ike ma na-eme ka ọ dị ike na ngwaahịa ndị dị ka sauces, uwe, na ngwaahịa mmiri ara ehi.
Arụmụka nhazi nke eke ma ọ bụ sịntetik:
Nkewa nke hydroxyethylcellulose dị ka eke ma ọ bụ sịntetik bụ isiokwu nke arụmụka.Nke a bụ arụmụka sitere n'akụkụ abụọ:
Arụmụka maka nhazi ọkwa dịka sịntetik:
Mgbanwe kemịkalụ: HEC sitere na cellulose site na usoro mgbanwe kemịkalụ gụnyere mmeghachi omume nke cellulose na ethylene oxide.A na-ewere mgbanwe kemịkalụ a dị ka sịntetị na okike.
Mmepụta mmepụta ihe: A na-emepụta HEC bụ isi site na usoro mmepụta ihe metụtara mmeghachi omume a na-achịkwa na usoro nchacha, nke bụ ụdị mmepụta ihe mmepụta ihe.
Degree mgbanwe: Ogo nke nnọchi na HEC nwere ike ịchịkwa nke ọma n'oge njikọta, na-egosi mmalite nke sịntetik.
Arụmụka maka nhazi ọkwa dịka eke:
E sitere na Cellulose: HEC na-enweta n'ikpeazụ site na cellulose, polymer eke dị n'ụba dị na osisi.
Isi mmalite emeghari ohuru: Cellulose, ihe mmalite maka mmepụta HEC, sitere na ihe eji emeghari ohuru dika pulp osisi na owu.
Biodegradability: Dị ka cellulose, HEC bụ biodegradable, na-agbada n'ime ihe ndị na-adịghị emerụ ahụ na gburugburu ebe obibi ka oge na-aga.
Myirịta na-arụ ọrụ na Cellulose: N'agbanyeghị mgbanwe kemịkalụ, HEC na-ejigide ọtụtụ ihe nke cellulose, dị ka solubility na mmiri na biocompatibility.
hydroxyethylcellulose bụ polymer vasatail ewepụtara site na cellulose site na usoro mgbanwe kemịkalụ.Ọ bụ ezie na mmepụta ya na-agụnye mmeghachi omume sịntetik na usoro mmepụta ihe, a na-enweta ya n'ikpeazụ site na isi iyi nke eke na mmeghari ohuru.Arụmụka gbasara ma HEC kwesịrị nkewa dị ka eke ma ọ bụ sịntetik na-egosipụta mgbagwoju anya nke ịkọwa okwu ndị a n'ọnọdụ nke polymers eke gbanwetụrụ.Ka o sina dị, biodegradability ya, mmeghari ohuru, na myirịta ọrụ ya na cellulose na-egosi na o nwere njirimara nke ogige okike na nke sịntetik, na-eme ka ókèala dị n'etiti nhazi abụọ ahụ.
Oge nzipu: Eprel-01-2024