I-Rheological Property yeMethyl cellulose Solution

Izici ze-rheological zezixazululo ze-methylcellulose (MC) zibalulekile ekuqondeni ukuziphatha nokusebenza kwayo ezinhlelweni ezihlukahlukene. I-rheology yento isho ukugeleza kwayo kanye nezici zokuguquguquka ngaphansi kwengcindezi noma ubunzima. Izici ze-rheological zezixazululo ze-MC zingathintwa yizici ezifana nokugxilisa ingqondo, izinga lokushisa, i-pH, kanye nezinga lokushintsha.

I-Viscosity

I-Viscosity ingenye yezakhiwo ezibaluleke kakhulu ze-rheological zezixazululo ze-MC. I-MC iyinto ebonakala kakhulu engakha izixazululo eziwugqinsi lapho incibilika emanzini. I-viscosity yezixazululo ze-MC incike ekugxilweni kwesixazululo, izinga lokushintshwa, kanye nezinga lokushisa. Ukuphakama kwesisombululo, kuyanda i-viscosity yesisombululo. Izinga lokushintsha liphinde lithinte i-viscosity yezixazululo ze-MC. I-MC enezinga eliphezulu lokushintsha ine-viscosity ephezulu uma iqhathaniswa ne-MC enezinga eliphansi lokushintsha. Izinga lokushisa lingaphinda lithinte i-viscosity yezixazululo ze-MC. I-viscosity yezixazululo ze-MC iyancipha ngokukhuphuka kwezinga lokushisa.

Shear Thinning Behaviour

Izixazululo ze-MC zibonisa ukuziphatha kokunciphisa i-shear, okusho ukuthi i-viscosity yazo iyancipha ngaphansi kwengcindezi yokugunda. Uma ukucindezeleka kwe-shear kusetshenziselwa isisombululo se-MC, i-viscosity iyancipha, okuvumela isisombululo ukugeleza kalula. Lesi sakhiwo sibalulekile ezinhlelweni zokusebenza lapho isisombululo sidinga ukugeleza kalula ngesikhathi sokucubungula, kodwa futhi sidinga ukugcina ukushuba nokusimama lapho siphumule.

Gelation Ukuziphatha

Izixazululo ze-MC zingangena ku-gelation uma zishiswa ngaphezu kwezinga lokushisa elithile. Lesi sakhiwo sincike ezingeni lokushintshwa kwe-MC. I-MC enezinga eliphezulu lokushintsha inezinga lokushisa eliphezulu le-gelation uma kuqhathaniswa ne-MC enezinga eliphansi lokushintsha. Ukuziphatha kwe-gelation kwezixazululo ze-MC kubalulekile ezinhlelweni ezifana nokukhiqizwa kwamajeli, amajeli, nama-dessert.

Thixotropy

Izixazululo ze-MC zibonisa ukuziphatha kwe-thixotropic, okusho ukuthi i-viscosity yazo iyancipha ngokuhamba kwesikhathi lapho ziphumule. Lapho ukucindezeleka kwe-shear kusetshenziselwa isisombululo, i-viscosity iyanda.