I-Hydroxypropyl methylcellulose isetyenziswa njenge-substrate yezinto eziluhlaza ukuvelisa ioli, enokuqonda ukusetyenziswa kweswekile epheleleyo, ukuphucula izinga lokusetyenziswa kwezinto eziluhlaza, ukunciphisa inani elishiyekileyo le-substrate kwi-broth fermentation, kunye nokunciphisa iindleko zokunyanga amanzi amdaka. Le hydroxypropyl methylcellulose Uphawu oluphambili lulungele ukulungiswa kwebhetshi, ibhetshi etyiswayo kunye neenkqubo eziqhubekayo zokuvutshelwa, ukuphepha uchungechunge lweengxaki ezifana nokulawulwa kokubunjwa okuphakathi kunye nesantya sokuxutywa; kukwanceda ukulawulwa kwenkqubo yokuvundisa.
I-Hydroxypropyl methylcellulose, i-cellulose yezinto ekrwada, inokuba ngumqhaphu osulungekisiweyo okanye i-pulp yomthi. Kuyimfuneko kakhulu ukuyityumza phambi kwe-alkalization okanye ngexesha le-alkalization. Ukutyumza kukutshabalalisa i-cellulose ekrwada ngamandla omatshini. Ubume bemeko ye-aggregation ye-cellulose macromolecules inokunciphisa iqondo le-crystallinity kunye ne-polymerization, yandisa indawo yayo ephezulu, ngaloo ndlela iphucula ukufikeleleka kunye nesakhono sokusabela kwekhemikhali ye-reagent reaction kumaqela amathathu e-hydroxyl kwiqela le-glucose ring ye-cellulose macromolecule.
Nangona umgaqo-siseko we-etherification ye-hydroxypropyl methylcellulose ayinzima, iindawo ezahlukeneyo ze-alkalization, ukuchithwa kwezinto ezikrwada, i-etherification, ukubuyiswa kwe-solvent, ukuhlukana kwe-centrifugal, ukuhlamba kunye nokomisa kubandakanya inani elikhulu lobuchwephesha obuphambili kunye nolwazi olutyebileyo. Kwiintlobo ezahlukeneyo zeemveliso, indawo nganye ineemeko zokulawula zamva nje, ezifana nobushushu, ixesha, uxinzelelo kunye nolawulo lokuhamba kwezinto. Izixhobo ezincedisayo kunye nezixhobo zokulawula ziziqinisekiso ezifanelekileyo zomgangatho wemveliso ozinzile kunye neenkqubo ezithembekileyo zemveliso.
Ekubeni ukusebenza kwe-hydroxypropyl methylcellulose kufana nezinye i-ethers ezinyibilikayo zamanzi, zingasetyenziselwa njenge-agent-forming agent, i-thickener, i-emulsifier kunye ne-stabilizer kwipeyinti ye-latex kunye namacandelo epeyinti ye-resin e-soluble yamanzi.
Yenza ifilimu yokugquma ibe nokuchasa kakuhle, ukulinganisa kunye nokunamathela, kunye nokuphucula ukuxinwa komphezulu, ukuzinza kwi-asidi kunye ne-alkali, kunye nokuhambelana kweepigments zetsimbi. I-Hydroxypropyl methylcellulose inefuthe elihle njenge-thickener yepeyinti ye-polyvinyl acetate yamanzi amhlophe. Iqondo lokutshintshwa kwe-cellulose ether linyukile, kwaye ukuchasana nokukhukuliseka kwebhaktheriya kuye kwandiswa.
Ixesha lokuposa: Feb-17-2023