Impembelelo ye-DS kwi-carboxymethyl cellulose Umgangatho

I-Carboxymethyl cellulose (CMC) iphuma kwi-cellulose enyibilikayo emanzini esetyenziswa kakhulu kumashishini ahlukeneyo, kubandakanya ukutya, amayeza, kunye nokhathalelo lomntu.Iqondo lokutshintshwa (DS) yiparameter ebalulekileyo echaphazela iimpawu zeCMC.Kweli nqaku, siza kuxubusha impembelelo ye-DS kumgangatho we-carboxymethyl cellulose.

Okokuqala, kubalulekile ukuqonda ukuba yintoni iqondo lokuthatha indawo.Iqondo lokutshintsha libhekisa kwinani lamaqela e-carboxymethyl ngeyunithi yeglucose kwikhonkco leselulosi.I-CMC iveliswa ngokusabela i-cellulose kunye ne-sodium monochloroacetate kunye ne-sodium hydroxide.Ngexesha lokusabela, amaqela e-hydroxyl kwikhonkco leselulosi athathelwa indawo ngamaqela e-carboxymethyl.Umgangatho wokutshintshwa unokulawulwa ngokutshintsha iimeko zokusabela, ezifana noxinzelelo lwesodium hydroxide kunye ne-sodium monochloroacetate, ixesha lokuphendula, kunye nobushushu.

I-DS ye-CMC ichaphazela iipropati zayo zomzimba kunye neekhemikhali, ezifana nokunyibilika kwayo, i-viscosity, kunye nokuzinza kwe-thermal.I-CMC ene-DS ephantsi ineqondo eliphezulu lekristale kwaye ayinyibiliki kangako emanzini kune-CMC ene-DS ephezulu.Oku kungenxa yokuba amaqela e-carboxymethyl kwi-CMC ene-DS ephantsi abekwe kumphezulu wetsheyini ye-cellulose, enciphisa ukunyibilika kwayo emanzini.Ngokwahlukileyo, i-CMC ene-DS ephezulu inokwakheka kwe-amorphous kwaye i-soluble yamanzi ngakumbi kune-CMC ene-DS ephantsi.

I-viscosity ye-CMC ikwachatshazelwa yi-DS.I-CMC ene-DS ephantsi ine-viscosity esezantsi kune-CMC ene-DS ephezulu.Oku kungenxa yokuba amaqela e-carboxymethyl kwi-CMC ene-DS ephantsi ahlukaniswe ngakumbi, nto leyo inciphisa intsebenziswano phakathi kwamatyathanga e-cellulose kwaye yehlise i-viscosity.Ngokwahlukileyo, i-CMC ene-DS ephezulu ine-viscosity ephezulu kuba amaqela e-carboxymethyl asondelelene kunye, nto leyo eyandisa intsebenziswano phakathi kwamatyathanga e-cellulose kwaye iphakamisa i-viscosity.

Ukongeza kwiimpawu zayo zomzimba, i-DS ye-CMC ichaphazela iipropati zayo zekhemikhali.I-CMC ene-DS ephantsi ayizinzile kangako kumaqondo obushushu aphezulu kunye namaxabiso e-pH kune-CMC ene-DS ephezulu.Oku kungenxa yokuba amaqela e-carboxymethyl kwi-CMC ene-DS ephantsi achaphazeleka ngakumbi kwi-hydrolysis kwaye anokwaphuka phantsi kweemeko ezinzima.Ngokwahlukileyo, i-CMC ene-DS ephezulu izinzile ngakumbi kumaqondo aphezulu kunye namaxabiso e-pH kuba amaqela e-carboxymethyl abotshelelwe ngokuqinileyo kwikhonkco le-cellulose.