Ukuvavanya i-viscosity ye-sodium carboxymethyl cellulose (CMC) yebakala lokutya ibalulekile ekuqinisekiseni ukusebenza kwayo kunye nokusebenza kwayo kwizicelo ezahlukeneyo zokutya. Imilinganiselo yeViscosity inceda abavelisi ukuba baqikelele ukutyeba kunye nokuzinzisa ubunakho bezisombululo ze-CMC, eziyimfuneko ekuphumezeni iimpawu ezinqwenelekayo zemveliso ezifana nokuthungwa, ukuvakala komlomo, kunye nozinzo. Nasi isikhokelo esibanzi kwindlela yovavanyo lwe-sodium CMC viscosity yebakala lokutya:

1. Umgaqo:

• I-Viscosity ngumlinganiselo wokuxhathisa kolwelo ukuhamba. Kwimeko yezisombululo ze-CMC, i-viscosity iphenjelelwa zizinto ezinje nge-polymer concentration, i-degree of substitution (DS), ubunzima bemolekyuli, i-pH, ubushushu, kunye nesantya sokucheba.
• I-viscosity yezisombululo ze-CMC ngokuqhelekileyo ilinganiswa kusetyenziswa i-viscometer, esebenzisa i-shear stress kulwelo kwaye ilinganisa i-deformation okanye isantya sokuhamba.

2. Izixhobo kunye neeReagents:

• Isampula yokutya ye-sodium carboxymethyl cellulose (CMC).
• Mamanzi amisiwe.
• I-Viscometer (umzekelo, i-viscometer ye-Brookfield, i-viscometer ejikelezayo okanye ye-capillary).
• I-Spindle efanelekileyo kuluhlu lwe-viscosity yesampuli.
• Ibhafu yamanzi elawulwa ngubushushu okanye igumbi le-thermostatic.
• I-stirrer okanye i-stirrer magnetic.
• Iibeakers okanye iikomityi zesampuli.
• Istopwotshi okanye isibali-xesha.

3. Inkqubo:

1. Ukulungiselela Isampulu:
   • Lungiselela uthotho lwezisombululo ze-CMC ezinogxininiso olwahlukileyo (umz., 0.5%, 1%, 2%, 3%) kumanzi adibeneyo. Sebenzisa ibhalansi ukulinganisa ubungakanani obufanelekileyo be-CMC yomgubo kwaye udibanise ngokuthe ngcembe emanzini ngokuvuselela ukuqinisekisa ukusasazwa okupheleleyo.
   • Vumela izisombululo ze-CMC ukuba zifake amanzi kwaye zilungelelanise ixesha elaneleyo (umzekelo, iiyure ezingama-24) ukuqinisekisa ukufakwa kwamanzi okufanayo kunye nokuzinza.
2. Umiselo lwesixhobo:
   • Ukulinganisa i-viscometer ngokwemiyalelo yomenzi usebenzisa i-viscosity reference fluid fluid.
   • Misela i-viscometer kwisantya esifanelekileyo okanye uluhlu lwezinga le-shear kwi-viscosity elindelekileyo yezisombululo ze-CMC.
   • Ukushisa i-viscometer kunye ne-spindle kubushushu obufunwayo bokuvavanya usebenzisa ibhafu yamanzi elawulwa ngubushushu okanye igumbi le-thermostatic.
3. Umlinganiselo:
   • Gcwalisa ikomityi yesampulu okanye ibhekile ngesisombululo seCMC ekufuneka sivavanywe, uqinisekise ukuba i-spindle intywiliselwe ngokupheleleyo kwisampulu.
   • Yehlisa i-spindle kwisampulu, unakekele ukuphepha ukwazisa amaqamza omoya.
   • Qala i-viscometer kwaye uvumele i-spindle ukuba ijikeleze ngesantya esichaziweyo okanye izinga lokucheba ixesha elimiselweyo (umzekelo, umzuzu we-1) ukufikelela kwimeko ezinzileyo.
   • Rekhoda ukufundwa kwe-viscosity eboniswe kwi-viscometer. Phinda umlinganiselo wesisombululo ngasinye seCMC kunye namazinga ahlukeneyo okucheba ukuba kuyimfuneko.
4. Uhlalutyo lwedatha:
   • I-Plot viscosity values ​​ngokuchasene noxinaniso lwe-CMC okanye izinga lokucheba ukuvelisa i-viscosity curves.
   • Bala amaxabiso abonakalayo e-viscosity kumazinga athile okucheba okanye ugxininiso lokuthelekisa nohlalutyo.
   • Qinisekisa ukuziphatha kwe-rheological yezisombululo ze-CMC (umzekelo, i-Newtonian, i-pseudoplastic, i-thixotropic) ngokusekelwe kwimilo ye-viscosity curves kunye nefuthe le-shear rate kwi-viscosity.
5. Utoliko:
   • Amaxabiso e-viscosity aphezulu abonisa ukuxhathisa okukhulu ukuhamba kunye neepropati eziqinileyo zokuqina kwesisombululo se-CMC.
   • Ukuziphatha kwe-viscosity yezisombululo ze-CMC kunokwahluka ngokuxhomekeke kwizinto ezinje ngoxinaniso, ubushushu, i-pH, kunye nesantya sokucheba. Ukuqonda ezi zinto kubalulekile ekwandiseni ukusebenza kwe-CMC kwizicelo ezithile zokutya.

4. Iingqwalasela:

• Qinisekisa ukulungelelaniswa okufanelekileyo kunye nokugcinwa kwe-viscometer yemilinganiselo echanekileyo nethembekileyo.
• Ukulawula iimeko zovavanyo (umzekelo, ubushushu, izinga lokucheba) ukunciphisa ukuguquguquka kunye nokuqinisekisa ukuphindaphindeka kweziphumo.
• Qinisekisa indlela usebenzisa imigangatho yereferensi okanye uhlalutyo lokuthelekisa kunye nezinye iindlela eziqinisekisiweyo.
• Yenza imilinganiselo ye-viscosity kumanqaku amaninzi kunye neemeko zokucubungula okanye zokugcina ukuvavanya ukuzinza kunye nokufaneleka kwezicelo ezijoliswe kuyo.

Ngokulandela le ndlela yokuvavanya, i-viscosity yezisombululo ze-sodium carboxymethyl cellulose (CMC) zingagqitywa ngokuchanekileyo, zibonelela ngolwazi oluxabisekileyo lokuqulunqa, ukulawula umgangatho, kunye nokulungiswa kwenkqubo kwishishini lokutya.