Hydroxyethyl Cellulose ke eng?
Hydroxyethyl cellulose (HEC), e bosehla bo bosoeu kapa bo bobebe, bo se nang monko, bo se nang chefo kapa bo tiileng, bo lokisitsoeng ke karabelo ea etherification ea alkaline cellulose le ethylene oxide (kapa chlorohydrin), ke ea Nonionic soluble cellulose ethers. Kaha HEC e na le thepa e ntle ea ho teteka, ho emisa, ho qhalakanya, emulsifying, ho kopanya, ho etsa filimi, ho sireletsa mongobo le ho fana ka colloid e sireletsang, e 'nile ea sebelisoa haholo ho hlahloba oli, ho roala, ho haha, meriana, lijo, masela, ho etsa pampiri le polymerization ea polymerization. le masimo a mang.
Hydroxyethyl cellulose e sebelisoa haholo indastering ea ho roala, a re ke re shebeng hore na e sebetsa joang ka liphahlo:
Ho etsahala'ng ha hydroxyethyl cellulose e kopana le pente e thehiloeng metsing?
Joaloka sehlahisoa se se nang ionic, hydroxyethyl cellulose e na le lintho tse latelang ho phaella ho ho teteaneng, ho emisa, ho tlama, ho phaphamala, ho etsa filimi, ho qhalakanngoa, ho boloka metsi le ho fana ka colloid e sireletsang:
HEC e qhibiliha ka metsing a chesang kapa a batang, mocheso o phahameng kapa o belang ntle le pula, e le hore e be le mefuta e mengata ea ho qhibiliha le litšoaneleho tsa viscosity, le gelation e sa chesang;
Matla a ho boloka metsi a phahame habeli ho feta a methyl cellulose, 'me a na le taolo e ntle ea phallo;
Ha e na ionic 'me e ka phela hammoho le mefuta e mengata e mengata ea li-polymers tse qhibilihang metsing, li-surfactants le matsoai. Ke colloidal thickener e babatsehang bakeng sa tharollo ea electrolyte e phahameng haholo;
Ha ho bapisoa le methyl cellulose e tsejoang le hydroxypropyl methyl cellulose, bokhoni ba ho qhalakanngoa ba HEC ke bona bo bobe ka ho fetisisa, empa matla a tšireletso a colloid ke a matla ka ho fetisisa.
Kaha hydroxyethyl cellulose e phekotsoeng ka holim'a metsi ke phofo kapa fibrous solid, lintlha tse latelang li lokela ho lateloa ha ho etsoa joala ba hydroxyethyl cellulose:
(1) Pele le ka mor'a ho eketsa hydroxyethyl cellulose, e tlameha ho tsosoa ka ho tsoelang pele ho fihlela tharollo e hlakile ka ho feletseng le e hlakileng.
(2) E tlameha ho sefshoa butle-butle ka har'a tanka e kopanyang, 'me u se ke ua kenya chelete e ngata kapa ua kenya hydroxyethyl cellulose ka ho toba ka tanka e kopanyang.
(3) Mocheso oa metsi le boleng ba PH metsing li na le kamano ea bohlokoa le ho qhibiliha ha hydroxyethyl cellulose, kahoo ho lokela ho lefshoa tlhokomelo e khethehileng.
(4) Se ke oa kenya lintho tse ling tsa alkaline motsoakong pele phofo ea hydroxyethyl cellulose e kolobisoa ka metsi. Ho phahamisa pH ka mor'a ho kolobisa ho thusa ho qhibiliha.
(5) Ho fihlela moo ho ka khonehang, eketsa moemeli oa antifungal esale pele.
(6) Ha u sebelisa high-viscosity hydroxyethyl cellulose, mahloriso a joala ba 'mè ha aa lokela ho ba holimo ho 2.5-3% (ka boima ba' mele), ho seng joalo joala ba 'mè bo tla ba thata ho sebetsana le bona.
Nako ea poso: Nov-21-2022