I-Hydroxyyethyl cellulose iyinhlangano ebalulekile yeselula. Ngenxa yezinzuzo zezinsizakusebenza eziningi ezisetshenziswayo eziluhlaza, ezingavuselelwa, ezinobuthi, ukungabikhona okunobuthi, ukuqina okuhle, kanye nesivuno esikhulu, ucwaningo lwayo kanye nohlelo lokusebenza lukudonsele ukunakwa kakhulu. . Inani le-Viscosity liyinkomba yokusebenza ebaluleke kakhulu ye-Hydroxyethyl cellulose. Kuleli phepha, i-hydroxyyethyl cellulose enenani le-viscosity ngenhla kwe-5 × 104mpa nye nenani lomlotha ngaphansi kwe-0.3% yalungiswa nge-alkali-esigabeni se-alkalization kanye nenqubo yokufaka izinyathelo ezimbili.
Inqubo ye-alkalization inqubo yokulungiselela ye-Alkali Cellulose. Kuleli phepha, kusetshenziswa izindlela ezimbili ze-alkalization. Indlela yokuqala ukusebenzisa i-acetone njengedilient. Izinto ezisetshenziswayo ze-cellulose ezifuywayo ziba khona ngokuqondile ekuhluni kwe-sodium hydroxide awdroxide adroxide addroxide. Ngemuva kokuthi ukusabela okuyisisekelo kwenziwa, i-ejenti etherati ingeziwe ekufezeni ngqo ukusabela kokuthezeka. Indlela yesibili ukuthi izinto ezisetshenziswayo ze-cellulose eluhlaza zifakwe kwisisombululo esinamanzi se-sodium hydroxide ne-urea, kanye ne-alkali cellulose elungiselelwe yile ndlela kumele idonswe ukuze ikhiphe ukuphendula ngokweqile ngaphambi kokuphendula okuthe xaxa. I-Alkali Cellulose elungiselelwe izindlela ezahlukahlukene yahlaziywa yi-infrared spectroscopy kanye ne-X-RAY. Ngokwezakhiwo zemikhiqizo elungiselelwe ukusabela kokuthezeka, indlela yokukhetha inqunywa.
Ukuze unqume inqubo engcono kakhulu yokuhlobanisa i-ethertheisation, indlela yokuphendula ye-antioxidant, i-ly kanye ne-glacial acetic acid ekuphenduleni ukusheshisa kwahlaziywa kuqala. Ngemuva kwalokho yakha uhlelo lokuhlola lokuphendula okukodwa, thola izici ezinomthelela omkhulu ekusebenzeni kwe-hydroxyethyethyl cellulose elungiselelwe, futhi usebenzise i-viscosity yesisombululo esingamanzi esingu-2% njengenkomba yereferensi. Imiphumela yokuhlola ikhombisa ukuthi izici ezifana nenani elikhethiwe elidilikayo, inani le-oxide ye-ethylene oxide, isikhathi sokushisa, izinga lokusabela kokuqala, izinga lokushisa lesibili lonke linethonya elikhulu ekusebenzeni komkhiqizo. Isikimu sokuhlola i-orthogonal esinezici eziyisikhombisa namazinga amathathu sakhiwa, futhi umphumela wejika osudonswayo emiphumeleni yokuhlola ungahle uhlaziye ngezinto eziyinhloko nangokwesiko kanye nomkhuba wethonya lento ngayinye. Ukuze ulungiselele imikhiqizo enezindinganiso eziphakeme ze-viscosity, kwakhiwa uhlelo lokuhlola olwenziwe kahle, kanye nohlelo olufanele lokulungiselela ama-hydroxyethyl cellulose ekugcineni kwanqunywa ngemiphumela yokuhlola.
Izakhiwo ze-High-Viscoxyethyl Vellose ezilungiselelwe zihlaziywe futhi zihlolwe, kufaka phakathi ukuzimisela kokubonakala, okuqukethwe kwe-Ash, ukuguquguquka kobuningi be-inframortic, ukuhlaziya okushisayo kwegesi, ukuhlaziya okwenziwa yi-thermogravimetric-okuhlukile nezinye izindlela ezishisayo zisetshenziselwa ukuhlaziya futhi zibonakalise Isakhiwo somkhiqizo, ukufana komkhiqizo, i-molar equation degree, i-crystaltaltity, ukuqina okushisayo, njll. Izindlela zokuhlola zibhekisela kumazinga we-ASTM.
I-Hydroxyyethyl cellulose, i-cellulose ebonakalayo ebonakalayo, idonsele ukunakwa ngenxa yezinsizakusebenza zayo eziningi ezisetshenziswayo, ezingavuselelwa, ezingahambelani, i-nontoxic, i-biofemade, nesivuno esiphakeme. I-viscoxyethyl celtulose iyinkomba ebaluleke kakhulu yokusebenza kwayo. I-viscosity ye-hydroxyyethyyll cellulose elungiselelwe ingaphezulu kwe-5 × 104MPA S, kanye nokuqukethwe komlotha kungaphansi kuka-0.3%.
Kuleli phepha, i-high-viscoxyethyl celtulose yalungiswa yindlela yokuhlanganiswa kwesigaba se-liquid-siquid ngokusebenzisa i-alkalization kanye nokuthezeka. Inqubo ye-Alkalization ukulungiswa kwe-Alkali Cellulose. Khetha ezindleleni ezimbili ze-alkalization. Eyokuqala ukuthi impahla ye-cellulose ihlanganiswe ngqo ne-acetone njenge-dilone kwikhambi le-aquous sodium hydroxide solution, bese lithola ukusabela kokuthezeka nge-ejenti etherati. Okunye ukuthi impahla ye-cellulosic ihlanganiswe ngesixazululo se-sodium hydroxide solution kanye ne-urea. I-alkali eyeqile e-Alkali Cellulose kumele isuswe ngaphambi kokuphendula. Kuleli phepha, amaselula ahlukahlukene e-Alkali afunwa yi-infrared spectroscopy kanye ne-X-ray. Ekugcineni, indlela yesibili yamukelwa ngokuya ngezakhiwo zemikhiqizo yokuthezeka.
Ukuze unqume izinyathelo zokulungiswa kokuthezeka, indlela yokuphendula ye-antioxidant, i-alkali kanye ne-acetic acetic acid ehlelweni lokudla yafundwa. Izici ezithinta ukulungiswa kwe-hydroxyethyl celtulose zazinqunywe ngokuhlolwa okukodwa. Kususelwa kunombolo ye-viscosity yomkhiqizo esikhangini esingu-2% esinamanzi. Imiphumela yokuhlola ikhombisa ukuthi ivolumu ye-dillont, inani le-ethylene oxide, isikhathi sokulinganisa, izinga lokushisa nesikhathi sokuvuselelwa kwesibili kunethonya elikhulu ekusebenzeni komkhiqizo. Indlela yezici eziyisikhombisa namazinga amathathu yamukelwa ukuthola indlela engcono kakhulu yokulungiselela.
Sihlaziya izakhiwo ze-hydroxyethyethyyl cellulose elungiselelwe, kufaka phakathi i-viscosity, umlotha, umswakama, njll. Ukuqina kwe-hormative, i-chromatity, i-armatography yokubumbana, i-DSC kanye ne-dat, kanye nezindlela zokuhlola ezamukelwa i-ASTM amazinga.
Isikhathi sePosi: Mar-09-2023