Sebenzisa isellulose njengezixhobo eziluhlaza, i-CMC-NA ilungiselelwe ngendlela yamanyathelo amabini. Eyokuqala yinkqubo ye-alkali ye-selselose. I-selupelose iphinda iphendule nge-sodium hydroxide ukuba ivelise i-alkali seluplose, kwaye ke ialkali secelose iphinda iphendule nge-chlorocetic acid ukuvelisa i-CMC-tisiation.
Inkqubo yokuphendula kufuneka ibe i-alkaline. Le nkqubo yeyokwayi-williamson ekutsheni indlela ye-synthesis. Indlela yokuphendula i-nucleophilic. Inkqubo yokuphendula yiAlkaline, kwaye ihamba kunye nokusabela kwecala phambi kwamanzi, njenge-Glycolate, i-Glycolic Acid kunye nezinye iimveliso. Ngenxa yobukho bezinto zasecaleni kwecala, ukuselwa kweAlkali kunye ne-Arhente ye-Eleesition kuya kwandiswa, ngaloo ndlela kuncitshiswa i-elektrone yokusebenza; Ngelishwa, i-gelycolate yesodium, i-gelycolic acid kunye nokungcola kwetyuwa kunokubangelwa kukusabela kwecala, kubangela ukucoceka kunye nokuncitshiswa kwemveliso. Ukwenzela ukulungisa imeko esecaleni, ayimfuneko ukuba isebenzise i-alkali ngokufanelekileyo, kodwa ikwalawula inani lenkqubo yamanzi, uxinzelelo lwe-alkali kunye nendlela eshukumisayo ye-alkali eyoneleyo. Kwangelo xesha, iimfuno zemveliso kwi-viscofity kunye nenqanaba lokufakelwa endaweni kufuneka zithathelwe ingqalelo, kwaye isantya esisiseko kunye nobushushu kufuneka sithathelwe ingqalelo ngokupheleleyo. Ukulawulwa kunye nezinye izinto, ukunyusa umgangatho we-etheriya, kwaye uthintele ukuvela kwempendulo esecaleni.
Ngokutsho kwe-EYERES DEEDIDODITIONODODODOD, ukuveliswa kwemveliso ye-CMC-NA inokwahlulwa yangamacandelo amabini: indlela esekwe emanzini kunye nendlela esekwe kwiSolvent. Indlela esebenzisa amanzi njengoko impendulo ephakathi ibizwa ngokuba yindlela ephakathi yamanzi, esetyenziselwa ukuvelisa i-Alkaline Medium kunye neBanga eliPhakamileyo i-CMC-NA. Indlela yokusebenzisa isolvent yeSorpovent njengoko impendulo ephakathi ibizwa ngokuba yindlela yeSolvent, elungele ukuveliswa kwebanga eliphakathi neliphezulu le-CMC-NA. Ezi ndlela zimbini zisenziwa kwi-idonter, ezikwinkqubo yokuxovula kwaye okwangoku yeyona ndlela iphambili yokuvelisa i-CMC-NA.
WIndlela ePhakamileyo yeAter:
Indlela ye-Borne yamanzi yinkqubo yangaphambili yemveliso yemveliso, eyokuphendula i-alkali seseli ye-alkali kunye ne-arhente yokwazisa phantsi kwemiqathango ye-alkali namanzi. Ngexesha lokuphumelela kunye nokutsalwa, akukho phakathi kwendalo kwinkqubo. Iimfuneko zezixhobo zendlela yemithombo yeendaba zamanzi zilula, kunotyalo-mali oluncinci kunye neendleko eziphantsi. Ukungancedisi kukunqongophala kwenani elikhulu lendawo engamanzi, ubushushu obuveliswa yindlela yokuphendula, ukukhawulezisa isantya sendlela esecaleni, kunye nomgangatho wemveliso ephantsi. Indlela isetyenziselwa ukulungiselela iimveliso eziphakathi nenqanaba eliphantsi le-CMC-NA elinje ngeembambatho, ii-arhente zokugcina izilwanyana kunye nokunye.
SIndlela yokwazi:
Indlela ye-Solvent ikwabizwa ngokuba yiNdlela yeSollovent yenkqubo ye-orgation, kwaye eyona nto iphambili kukuba i-alkalization kunye nokuphendula kwe-elekrele yenziwa phantsi kwemeko ye-organic slinven njengeendlela zokugcina (i-dieuent). Ngokwesixa sokusebenza ngokusebenzayo, sahlulwe saba yindlela yokuxolelwa kunye nendlela yesilayidi. Indlela yesinyithi iyafana nenkqubo yokuphendula yendlela yaManzi, kwaye inamanqanaba amabini okwenza i-alkaliy kunye nesisori, kodwa indlela awasabela ngayo la manqanaba mabini yahlukile. Indlela ye-Solvent igcina inkqubo yokuthoba i-alkali, icinezela, ityhutyha, i-alkality yendlela yokwehla, kunye nokutsalwa kwe-esthelity zonke ziqhutywa kwigobo. Ingxaki kukuba ukungalawulwa kobushushu kuyahlwempuzeka, kwaye imfuno yendawo yendawo kunye neendleko ziphezulu. Ewe kunjalo, ngokuveliswa kwezixhobo ezahlukeneyo zezixhobo, kufuneka kulawulo olungqongqo lweqondo lokushisa, ixesha lokutya, njl njl.
Ixesha lePosi: NgoFebruwari-27 ukuya ku-4023