I-sodium carboxymethyl cellulose (CMC)yi-carboxymethylated derivative ye-cellulose, ekwaziwa ngokuba yi-cellulose gum, kwaye yeyona gum ye-ionic cellulose ebaluleke kakhulu. I-CMC idla ngokuba yi-anionic polymer compound efunyenwe ngokuphendula i-cellulose yendalo nge-caustic alkali kunye ne-monochloroacetic acid. Ubunzima be-molecular be-compound buqala kwizigidi ezingamashumi ukuya kwizigidi ezininzi.
【Iipropati】Umgubo omhlophe, awunavumba, uyanyibilika emanzini ukwenza isisombululo esinoburhabaxa obuphezulu, awunyibiliki kwi-ethanol nakwezinye izinyibilikisi.
【Isicelo】Inemisebenzi yokumiswa kunye ne-emulsification, ukuhlangana okuhle kunye nokumelana netyuwa, kwaye yaziwa ngokuba yi-"industrial monosodium glutamate", esetyenziswa kakhulu.
Ukulungiswa kwe-CMC
Ngokweendlela ezahlukeneyo zokuvelisa i-etherification, imveliso ye-CMC kwimizi-mveliso inokwahlulwahlulwa ibe ziindidi ezimbini: indlela esekelwe emanzini kunye nendlela esekelwe kwi-solvent. Indlela yokusebenzisa amanzi njenge-reaction medium ibizwa ngokuba yindlela ethwala amanzi, esetyenziselwa ukuvelisa i-alkaline medium kunye ne-low-grade CMC; indlela yokusebenzisa i-organic solvent njenge-reaction medium ibizwa ngokuba yindlela ye-solvent, efanelekileyo ekuveliseni i-CMC ephakathi kunye ne-high-grade. Zombini ezi mpendulo zenziwa kwi-kneader, eyinxalenye yenkqubo yokuxova kwaye yeyona ndlela iphambili yokuvelisa i-CMC okwangoku.
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indlela esekelwe emanzini
Indlela yokuhambisa amanzi yinkqubo yokuvelisa imveliso yemizi-mveliso yangaphambili, eyokwenza i-alkali cellulose isebenze nge-etherifying agent kwimeko ye-alkali kunye namanzi akhululekileyo. Ngexesha lenkqubo ye-alkaliization kunye ne-etherification, akukho medium yendalo kwinkqubo. Iimfuno zezixhobo zendlela yokuhambisa amanzi zilula kakhulu, ngotyalo-mali oluncinci kunye neendleko eziphantsi. Ingxaki kukuba kukho ukunqongophala kwe-medium yolwelo eninzi, kwaye ubushushu obuveliswa yi-reaction buyandisa ubushushu, nto leyo ekhawulezisa isantya seempendulo ezingalindelekanga, nto leyo ebangela ukusebenza kakuhle kwe-etherification ephantsi kunye nomgangatho ophantsi wemveliso. Le ndlela isetyenziselwa ukulungiselela iimveliso ze-CMC eziphakathi nezisezantsi, ezifana neesepha, ii-agents zokulinganisa ilaphu, njl.
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indlela yesinyibilikisi
Indlela yokunyibilikisa ikwaziwa ngokuba yindlela yokunyibilikisa i-organic. Uphawu lwayo oluphambili kukuba i-alkalization kunye ne-etherification reactions zenziwa phantsi kwemeko yokuba i-organic solvent isetyenziswa njengendawo yokusabela (i-diluent). Ngokwenani le-reaction diluent, yahlulwe yaba yindlela yokuxova kunye nendlela yokulunywa. Indlela yokunyibilikisa iyafana nenkqubo yokusabela kwendlela esekwe emanzini, kwaye ikwaqulathe amanqanaba amabini e-alkalization kunye ne-etherification, kodwa indlela yokusabela kwezi zigaba zimbini yahlukile. Indlela yokunyibilikisa isusa iinkqubo ezikwindlela esekwe emanzini, ezinje ngokucwilisa, ukucinezela, ukucola, ukuguga, njl.njl., kwaye i-alkalization kunye ne-etherification zonke zenziwa kwi-kneader. Ingxaki kukuba ulawulo lobushushu alukho kakuhle, imfuneko yendawo kunye neendleko ziphezulu. Kakade ke, ukuvelisa uyilo lwezixhobo ezahlukeneyo, kuyimfuneko ukulawula ngokungqongqo ubushushu benkqubo, ixesha lokutya, njl.njl., ukuze iimveliso ezinomgangatho ophezulu kunye nokusebenza zikwazi ukulungiswa. Itshathi yayo yokuhamba kwenkqubo iboniswe kuMfanekiso 2.
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Imeko yoLungiso lweSodiumI-Carboxymethyl Celluloseevela kwiMveliso yeZolimo
Iimveliso eziphuma kwizityalo zineempawu ezahlukeneyo kunye nokufumaneka lula, kwaye zingasetyenziswa kakhulu njengezinto zokwenza i-CMC. Okwangoku, izinto zokwenza i-CMC ziyi-cellulose ecociweyo, kubandakanya i-cotton fiber, i-cassava fiber, i-straw fiber, i-bamboo fiber, i-wheat straw fiber, njl. Nangona kunjalo, ngokukhuthazwa okuqhubekayo kwezicelo ze-CMC kuzo zonke iinkalo zobomi, phantsi kwezixhobo zokucubungula izinto zokwenza i-green material ezikhoyo, indlela yokusebenzisa imithombo engabizi kwaye ebanzi yezinto zokwenza i-CMC ukulungiselela ngokuqinisekileyo iya kuba yinto ephambili.
Imbonakalo
I-sodium carboxymethyl cellulose ingasetyenziswa njenge-emulsifier, i-flocculant, i-thickener, i-chelating agent, i-arhente yokugcina amanzi, i-adhesive, i-arhente yokulinganisa, izinto zokwenza ifilimu, njl. Isetyenziswa kakhulu kwi-elektroniki, isikhumba, iiplastiki, ushicilelo, iiseramikhi, ukusetyenziswa kwemihla ngemihla. Iikhemikhali kunye nezinye iindawo, kwaye ngenxa yokusebenza kwayo okugqwesileyo kunye noluhlu olubanzi lokusetyenziswa, isaqhubeka nokuphuhlisa iindawo ezintsha zokusetyenziswa. Kule mihla, phantsi kokusasazwa ngokubanzi kwengcamango yokuveliswa kweekhemikhali eziluhlaza, uphando lwangaphandle malungaI-CMCIteknoloji yokulungiselela igxile ekufuneni izinto eziluhlaza zebhayoloji ezingabizi kwaye kulula ukuzifumana kunye neendlela ezintsha zokucocwa kwe-CMC. Njengelizwe elinemithombo emikhulu yezolimo, ilizwe lam likwimo yokuguqulwa kwe-cellulose Ngokuphathelele iteknoloji, ineenzuzo zezinto eziluhlaza, kodwa kukwakho neengxaki ezifana nokungangqinelani kwenkqubo yokulungiselela okubangelwa yimithombo eyahlukeneyo yeefayibha ze-cellulose ze-biomass kunye nomahluko omkhulu kumacandelo. Kusekho iziphene ekwanelekeni kokusetyenziswa kwezinto ze-biomass, ngoko ke kufuneka kwenziwe uphando olubanzi kwezi ndawo.
Ixesha leposi: Epreli-25-2024