I-Cellulose ether iyi-polymer yokwenziwa eyenziwe nge-cellulose yemvelo ngokuguqulwa kwamakhemikhali.I-Cellulose ether iphuma ku-cellulose yemvelo.Ukukhiqizwa kwe-cellulose ether kuhlukile kuma-polymers okwenziwa.Impahla yayo eyisisekelo i-cellulose, isakhi se-polymer yemvelo.Ngenxa yemininingwane yesakhiwo se-cellulose yemvelo, i-cellulose ngokwayo ayinalo ikhono lokusabela nge-etherification agents.Kodwa-ke, ngemva kokwelashwa kwe-ejenti yokuvuvukala, izibopho eziqinile ze-hydrogen phakathi kwamaketanga amangqamuzana namaketanga ziyabhujiswa, futhi ukukhululwa okusebenzayo kweqembu le-hydroxyl kuba i-alkali cellulose esebenzayo.Thola i-cellulose ether.
Izici zama-cellulose ethers zincike ohlotsheni, inombolo nokusatshalaliswa kwezinto ezibambele.Ukuhlukaniswa kwe-cellulose ethers futhi kusekelwe ohlotsheni lwama-substitute, izinga le-etherification, ukuncibilika kanye nezakhiwo zesicelo ezihlobene.Ngokuya kohlobo lwama-substituent ochungechungeni lwemolekyuli, ingahlukaniswa ibe i-monoether ne-ether exutshiwe.Ngokuvamile sisebenzisa i-mc njenge-monoether, ne-HPmc njenge-ether exubile.I-Methyl cellulose ether mc iwumkhiqizo ngemuva kokuthi iqembu le-hydroxyl kuyunithi ye-glucose ye-cellulose yemvelo lithathelwe indawo yiqembu le-methoxy.Kungumkhiqizo otholwe ngokufaka esikhundleni ingxenye yeqembu le-hydroxyl kuyunithi neqembu le-methoxy kanye nengxenye neqembu le-hydroxypropyl.Ifomula yesakhiwo ithi [C6H7O2(OH)3-mn(OCH3)m[OCH2CH(OH)CH3]n]x Hydroxyethyl methyl cellulose ether HEmc, lezi yizinhlobo eziyinhloko ezisetshenziswa kakhulu futhi ezithengiswa emakethe.
Ngokuya nge-solubility, ingahlukaniswa ibe yi-ionic ne-non-ionic.Ama-ether e-non-ionic cellulose ancibilika emanzini akhiwa ikakhulukazi uchungechunge olubili lwama-alkyl ether nama-hydroxyalkyl ether.I-Ionic Cmc isetshenziswa kakhulu ezintweni zokwenziwa zokuhlanza, ukuphrinta izindwangu nokudaya, ukuhlola ukudla nowoyela.I-non-ionic mc, i-HPmc, i-HEmc, njll. isetshenziswa kakhulu ezintweni zokwakha, i-latex coatings, imithi, amakhemikhali ansuku zonke, njll. Isetshenziswa njenge-thickener, i-ejenti yokugcina amanzi, i-stabilizer, i-dispersant kanye ne-ejenti yokwakha ifilimu.
Isikhathi sokuthumela: Nov-24-2022