I-sodium carboxymethyl cellulose (CMC)yicarboxymethylated derivative of cellulose, ekwabizwa ngokuba yi-cellulose gum, kwaye yeyona gum ionic cellulose ibalulekileyo. I-CMC idla ngokuba yi-anionic polymer compound efunyenwe ngokusabela i-cellulose yendalo kunye ne-caustic alkali kunye ne-monochloroacetic acid. Ubunzima bemolekyuli bomxube bususela kumashumi ezigidi ukuya kwizigidi eziliqela.
【Iipropathi】Umgubo omhlophe, awunavumba, unyibilika emanzini ukwenza isisombululo se-viscosity ephezulu, enganyibilikiyo kwi-ethanol kunye nezinye izinyibilikisi.
【Isicelo】 Inemisebenzi yokunqunyanyiswa kunye ne-emulsification, ukubambisana okulungileyo kunye nokumelana netyuwa, kwaye yaziwa ngokuba yi "industrial monosodium glutamate", esetyenziswa ngokubanzi.
Ukulungiswa kweCMC
Ngokutsho kwe-etherification medium eyahlukileyo, imveliso yoshishino ye-CMC inokwahlulwa ibe ngamacandelo amabini: indlela esekwe emanzini kunye ne-solvent-based method. Indlela yokusebenzisa amanzi njengendlela yokusabela ibizwa ngokuba yindlela yokuhambisa amanzi, esetyenziselwa ukuvelisa i-alkaline medium and low-grade CMC; indlela yokusebenzisa i-solvent ephilayo njengoko i-reaction medium ibizwa ngokuba yi-solvent method, efanelekileyo kwimveliso ye-CMC ephakathi kunye nephezulu. Zombini ezi mpendulo ziqhutywa kwi-kneader, eyenkqubo yokuxova kwaye yeyona ndlela iphambili yokuvelisa i-CMC ngoku.
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indlela esekelwe emanzini
Indlela yokuhamba ngamanzi yinkqubo yangaphambili yokuvelisa i-industrial, okuyiyo ukusabela i-alkali cellulose kunye ne-etherifying agent kwimeko ye-alkali yamahhala kunye namanzi. Ngexesha le-alkalization kunye nenkqubo ye-etherification, akukho nto i-organic medium kwinkqubo. Iimfuno zezixhobo zendlela yokuhamba ngamanzi zilula, kunye notyalo-mali oluncinci kunye neendleko eziphantsi. Ukungalungi kukuba kukho ukunqongophala kwesixa esikhulu solwelo oluphakathi, kwaye ubushushu obuveliswa yi-reaction kwandisa ubushushu, obunyusa isantya seempendulo zecala, okukhokelela ekusebenzeni kakuhle kwe-etherification kunye nomgangatho ombi wemveliso. Le ndlela isetyenziselwa ukulungiselela iimveliso ze-CMC eziphakathi kunye nezisezantsi, ezinjengezokucoca, i-agent ye-textile sizeng, njl.
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indlela yokunyibilikisa
Indlela yokunyibilikisa yaziwa ngokuba yi-organic solvent method. Isici sayo esiphambili kukuba i-alkalization kunye nee-etherification reactions zenziwa phantsi kwemeko yokuba i-solvent ye-organic isetyenziswe njenge-reaction medium (diluent). Ngokomlinganiselo wokuphendula i-diluent, yahlulwe ngendlela yokuxova kunye nendlela yodaka. Indlela yokunyibilikisa iyafana nenkqubo yokusabela kwindlela esekwe emanzini, kwaye ikwaquka izigaba ezibini ze-alkalization kunye ne-etherification, kodwa indlela yokusabela kwezi zigaba zimbini yahlukile. Indlela ye-solvent iphelisa iinkqubo ezihambelana nendlela esekelwe kumanzi, njengokuxubha, ukukhama, ukucoca, ukuguga, njl., kunye ne-alkalization kunye ne-etherification zonke zenziwa kwi-kneader. Ukungalungi kukuba ukulawulwa kweqondo lokushisa kuncinci, imfuno yendawo kunye neendleko ziphezulu. Kakade ke, ukuveliswa koyilo lwezixhobo ezahlukeneyo, kuyimfuneko ukulawula ngokungqongqo ubushushu benkqubo, ixesha lokutya, njl., ukwenzela ukuba iimveliso ezinomgangatho obalaseleyo kunye nokusebenza zilungiswe. Itshathi yenkqubo yayo yokuqukuqela iboniswe kuMfanekiso 2.
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Ubume boLungiselelo lweSodiumCarboxymethyl Celluloseevela kwiimveliso zezoLimo
Iimveliso zezityalo zineempawu zokwahluka kunye nokufumaneka lula, kwaye zinokusetyenziswa ngokubanzi njengemathiriyeli ekrwada ukulungiselela i-CMC. Okwangoku, imveliso ye-CMC yezixhobo ezikrwada ziyi-cellulose esulungekisiweyo ikakhulu, kubandakanya ifayibha yomqhaphu, ifayibha yecassava, ifayibha yomququ, ifayibha yoqalo, ifayibha yomququ, njl.
Outlook
I-sodium carboxymethyl cellulose ingasetyenziswa njenge-emulsifier, i-flocculant, i-thickener, i-agent ye-chelating, i-ejenti yokugcina amanzi, i-adhesive, i-ejenti yokulinganisa, ifilimu yokwenza ifilimu, njl. Kule mihla, phantsi kokusasazwa ngokubanzi kwengcamango yokuveliswa kweekhemikhali eziluhlaza, uphando lwangaphandle kwiCMCitekhnoloji yokulungiselela igxile ekukhangeleni izinto ezingabizi kwaye kulula ukuzifumana zebhayoloji kunye neendlela ezintsha zokucocwa kweCMC. Njengelizwe elinobutyebi obukhulu bezolimo, ilizwe lam kukuguqulwa kwe-cellulose Ngokubhekiselele kwithekhnoloji, ineenzuzo zezinto ezibonakalayo, kodwa kukho iingxaki ezifana nokungahambelani kwinkqubo yokulungiselela okubangelwa yimithombo eyahlukeneyo ye-biomass cellulose fibers kunye nokwahlukana okukhulu kumacandelo. Kusekho ukunqongophala ekwaneleni kokusetyenziswa kwemathiriyeli ye-biomass, ngoko ke impumelelo eyongezelelweyo kule mimandla kufuneka yenziwe uphando olubanzi.
Ixesha lokuposa: Apr-25-2024