HydroxytHyl Celluloseinyanzvi yakakosha mheremellose inobviswa. Nekuda kwezvakanakira zviwanikwa zviwanikwa zvezvinhu zviwanikwa, kuvhenekerwa, biodegradable, isina chepfu, yakanaka bighompat, uye yekutsvagisa kukuru uye kushandisa kwayo uye application yakakwezva kutarisisa kwakawanda. . Viscossity kukosha ndiyo yakakosha performance index ye hydroxytHyl cellulose. Mupa iri, hydroxyethyl cellulose kukosha pamusoro 5 × 104mpa · cell uye lehless yakagadzirwa neyakagadzirwa neyechivha
Maitiro eAlkalization ndiyo yekugadzirira maitiro ealkali cellalose. Mupepa rino, nzira mbiri dzeAlkalization dzinoshandiswa. Iyo yekutanga nzira ndeye kushandisa acetone seciluent. Iyo cellulose chigadzirwa chezvinhu chakasimbiswa chakanyatsogadzirirwa mune imwe kusunganidzwa kwesodium hydroxide yemvura mhinduro. Mushure mekuita kwekusimbisa kunoitwa Nzira yechipiri ndeyekuti cellulose zvidhori zvakarongeka mumamiriro ekunze eSodium Hydroxide neUrea yakagadzirirwa nenzira iyi inofanira kunyorwa kuti ubvise yakawandisa LACHE isati yotsauka maitiro. Iyo Alkali cellulose yakagadzirirwa nenzira dzakasiyana yakaongororwa neInfrared Spectroscopy uye X-ray difrction. Zvinoenderana nezvinogadzirwa zvezvigadzirwa zvakagadzirirwa neiyo erafied maitiro, nzira yekusarudza yakatemwa.
Kuti uzive zvakanakisa ethesis synthesis maitiro, maitiro ekuita eAsixidant, Lyox uye Glacial acetic acid muEtheifitification Reaction yakaongororwa kutanga. Wobva wagadzira chirongwa chekuyedza chechinhu chimwe chete chechokwadi, sarudza zvinhu zvakakura zvekuita kweiyo hydroxaketHyl Celluloseth Celluloseet, uye shandisa vhiza yechigadzirwa chechipiri Mhedzisiro yekuyedza inoratidza zvinhu izvo zvakadai sekusarudzwa kwehukama, huwandu hwemakumi maEndylene oxide An orthogonal kuedza ane zvinhu zvinomwe uye matanho matatu akakwidzwa kumusoro, uye mhedzisiro yakatorwa kubva pamhedzisiro yekuedza inogona kuongorora zvinhu zvikuru uye zvepamhepo zvinhu uye maitiro ekurudzira. Kuti ugadzirire zvigadzirwa neyekumusoro viscossity kukosha, chirongwa chakarongeka chekuedza chakaumbwa, uye chirongwa chakakwana chekugadzirira hydroxylyl cellumelose chakazotarisa kuburikidza nemhedzisiro yekuedza.
Zvivakwa zveiyo yakakwirira yakakwirira-viscosityHydroxytHyl Cellulosevakaongororwa uye nekuedzwa, kusanganisira kutsunga kweVanhu, kuumbwa kweGirazi, neChigheni Molar kutsiva degree, crystallinity, yekunyudza yekunyora, etc. iyo bvunzo nzira dzinoreva kune ASTM zviyero.
HydroxytHyl Cellulose, inokosha cellulose inobva, yakakwezva kutarisisa nekuda kwezvinhu zvaro zviwanikwa zvekushandisa, kuvandudza, biodelable, pasi, biocomputt Iyo viscosity ye hydroxytHyl cellulose chiratidzo chakakosha chekuita kwayo. Iyo viscosity yeiyo yakagadzirirwa hydroxytHyl Celluloseet iri pamusoro 5 × 104mpa ·, uye iyo ASH zvemukati zviri pasi pe 0,3%.
Mune ino pepa, yakakwira-vcosity hydroxytHyl cellulose yakagadzirirwa neyechikamu-chikamu synthesis nzira kuburikidza nealkalization uye otera. Maitiro eAlkalization ndiyo gadziriro yealkali cellulose. Sarudza kubva kune maviri ma alkalization nzira. Imwe ndeyekuti iyo cellulose zvinhu zvakanyatsonaka neacetone kunge dhidi mune iyo yekuda sodium hydroxide solution, uye wozoita maitiro ekutsvagira nemumiririri wekuchinja. Imwe nderekuti iyo cellulosic zvinyorwa inoshandiswa mune queodium sodium hydroxide solution uye Urea. Iyo yakawandisa Alkali muAlkali cellalose inofanira kubviswa pamberi pekuita. Mune ino pepa, dzakasiyana-siyana alkali celluloses dzinodzidziswa neinfrared spectrarecopy uye x-ray difrction. Pakupedzisira, nzira yechipiri inotorwa maererano nezvivakwa zvezvinhu zvetsamba.
Kuti uzive magadzirirwo ekugadzirira ekuwedzera, maitiro ekuita eAsiiyoxidant, Alkali uye Glacial acetic acid mune yekudya yakadzidzwa. Zvinhu zvinokanganisa kugadzirira kwehydroxylth cellulose vakatemerwa nekuedza kamwe chete. Kubva pane iyo viscosity kukosha kwechigadzirwa mune 2% mhinduro mhinduro. Mhedzisiro yekuedza inoratidza kuti huwandu hweshoko reDail Nzira yezvakanaka zvinhu uye matanho matatu akagamuchirwa kuti aone nzira yakanaka kwazvo yekugadzirira.
Isu tinoongorora zvivakwa zveiyo yakagadzirirwaHydroxytHyl Cellulose, kusanganisira viscosity, ash, kuputika kwechiedza, etc. Substituent Homogement, Gasi Chromato
Kutumira Nguva: Kubvumbi-25-2024