I-Cellulose ether yipolymer eyenziwe nge-cellulose yendalo ngokuguqulwa kweekhemikhali.I-ether ye-cellulose iphuma kwi-cellulose yendalo.Ukuveliswa kwe-cellulose ether kuyahluka kwiipolymers zokwenziwa.Izinto zayo ezisisiseko ziyi-cellulose, i-polymer compound yendalo.Ngenxa yobungcali besakhiwo se-cellulose yendalo, i-cellulose ngokwayo ayinakho ukusabela kunye nee-etherification agents.Nangona kunjalo, emva kokunyangwa kwe-ejenti yokuvuvukala, iibhondi ze-hydrogen ezomeleleyo phakathi kwamatyathanga e-molecular kunye namatyathanga atshatyalaliswa, kwaye ukukhutshwa okusebenzayo kweqela le-hydroxyl kuba yi-alkali cellulose esebenzayo.Fumana i-cellulose ether.
Iimpawu ze-cellulose ethers zixhomekeke kuhlobo, inani kunye nokuhanjiswa kwezinto ezithatha indawo.Ukuhlelwa kwe-ether ye-cellulose ikwahlelwa ngokohlobo lwe-substituent, i-degree of etherification, i-solubility kunye neempawu zesicelo esihambelanayo.Ngokohlobo lwababambeleyo kwitsheyini yemolekyuli, inokwahlulwa ibe yi-monoether kunye ne-ether edibeneyo.I-MC esiqhele ukuyisebenzisa yi-monoether, kwaye i-HPMC ixutywe i-ether.I-Methyl cellulose ether MC yimveliso emva kweqela le-hydroxyl kwiyunithi ye-glucose ye-cellulose yendalo ifakwe endaweni ye-methoxy.Yimveliso efunyenwe ngokutshintsha inxalenye yeqela le-hydroxyl kwiyunithi kunye neqela le-methoxy kunye nenye inxalenye kunye neqela le-hydroxypropyl.Ifomula yolwakhiwo ithi [C6H7O2(OH)3-mn(OCH3)m[OCH2CH(OH)CH3]n]x Hydroxyethyl methyl cellulose ether HEMC, ezi zezona ntlobo zisetyenziswa kakhulu kwaye zithengiswa kwimarike.
Ngokubhekiselele kwi-solubility, inokwahlulwa ibe yi-ionic kunye ne-non-ionic.Ii-ether ze-cellulose ezingenayo i-ionic ezinyibilikayo zamanzi zenziwa ikakhulu ngamacandelo amabini e-alkyl ethers kunye ne-hydroxyalkyl ethers.I-Ionic CMC isetyenziswa ikakhulu kwizicoci zokwenziwa, ushicilelo lwelaphu kunye nokudaya, ukutya kunye nokuhlola ioli.I-non-ionic MC, i-HPMC, i-HEMC, njl njl. zisetyenziselwa ikakhulu kwizinto zokwakha, iingubo ze-latex, amayeza, iikhemikhali zemihla ngemihla, njl njl. Isetyenziswe njenge-thickener, i-agent egcina amanzi, i-stabilizer, i-dispersant kunye ne-agent yokwenza ifilimu.
Ukuchongwa komgangatho we-cellulose ether:
Impembelelo yomxholo we-methoxyl kumgangatho: ukugcinwa kwamanzi kunye nomsebenzi wokuqina
Impembelelo yomgangatho we-hydroxyethoxyl / hydroxypropoxyl umxholo: uphezulu umxholo, ngcono ukugcinwa kwamanzi.
Impembelelo yomgangatho we-viscosity: iqondo eliphezulu le-polymerization, i-viscosity ephezulu kwaye ingcono ukugcinwa kwamanzi.
Impembelelo yomgangatho we-fineness: ukusasazwa kakuhle kunye nokuchithwa kwidaka, ngokukhawuleza kunye nokufana okufanayo, kunye nokugcinwa kwamanzi okuhambelanayo kungcono.
Impembelelo yomgangatho wokuhanjiswa kokukhanya: inqanaba eliphezulu lepolymerization, kokukhona iqondo lepolymerization lilingana, kunye nokuncipha kokungcola.
Impembelelo yomgangatho wobushushu beGel: iqondo lobushushu lejeli yokwakha lijikeleze i-75°C
Impembelelo yomgangatho wamanzi: <5%, i-cellulose ether kulula ukufunxa ukufuma, ngoko kufuneka ivalwe kwaye igcinwe.
Impembelelo yomgangatho we-Ash: <3%, iphezulu umlotha, ukungcola ngakumbi
Impembelelo yexabiso lexabiso le-PH: kufutshane nokungathathi hlangothi, i-ether yeselulosi inomsebenzi ozinzileyo phakathi kwe-PH: 2-11
Ixesha lokuposa: Feb-14-2023