Kunezibonakaliso eziningana ze-ukungazinzi kwe-emulsion: ukugoqana, ukuhlangana, ukuhlukaniswa (noma ukusatshalaliswa), ukudilizwa, ukuguqulwa kwesigaba kanye nokuvuthwa kwe-Ostwald.
1. Ukukhukhuleka
Amaconsi ahlakazekile ku-emulsion ahlangana ukwakha amaqoqo amaconsi anezinhlangothi ezintathu, achazwa ngokuthi ama-floc, futhi le nqubo ibizwa ngokuthi i-flocculation. Ngaphansi kwezimo ezivamile, azikho izinguquko ezibalulekile ngobukhulu kanye nokusatshalaliswa kwamaconsi ngaphakathi kwama-floc, futhi ukuhlangana kwamaconsi akwenzeki, lapho amaconsi egcina izakhiwo zawo zokuqala. Ukuqubuka kubangelwa amandla akhangayo phakathi kwamaconsi. Amandla anjalo avame ukuba buthakathaka, okwenza inqubo yokuqubuka ikwazi ukuguqulwa (eyaziwa ngokuthi i-flocculation ebuthakathaka), futhi ukushukuma kungahlukanisa ama-floc.
2.Ukubumbana
Uma amaconsi e-flocculates ehlangana, amafilimu oketshezi amaconsi amancane ngaphakathi ayaqhuma futhi akhe ubuhlalu obukhulu boketshezi. Le nqubo ichazwa njengokuhlangana. Ukuhlangana kuyinqubo engenakuguqulwa, eholela ekunciphiseni inani lamaconsi kanye nokuqhekeka okuphelele kwama-emulsion, okungukuthi ukuhlukaniswa kwamafutha namanzi. Ukuhlangana kusebenza njengesiqalo sokuhlangana, kuyilapho ukuhlangana kuyimbangela eqondile yomonakalo we-emulsion.
3.Ukwakheka kwe-stratification
Ngenxa yomehluko wobuningi phakathi kwesigaba samafutha kanye nesigaba samanzi, amaconsi azontanta noma acwile ngaphansi kwesenzo samandla adonsela phansi, okwakha i-gradient yokugxila kwamaconsi e-emulsion elinganiselayo. Le nqubo yaziwa ngokuthi i-creaming noma i-sedimentation. Nakuba i-creaming iphazamisa ukufana kwe-emulsion, i-emulsion ngokwayo ayibhujiswanga ngempela.
I-emulsion iyisistimu engazinzile ngokwe-thermodynamic enesimo sokugcina sokulingana okuwukuhlukaniswa kwamafutha namanzi kanye nokuhlukaniswa (njengesendlalelo samanzi kanye nesendlalelo samafutha), kanti ukuhlukaniswa kwe-mulsification kuwumphumela wayo ongenakugwenywa. Emasimini athile ezimboni, kudingeka ukuhlukaniswa kwe-mulsification. Isibonelo, ukuhlukaniswa kwe-oyili engahluziwe (W/O) ukuze kufezwe ukuhlukaniswa kwe-oyili namanzi.
5. Okuhlukile
I-emulsion ingaguquka kusuka kuhlobo lwe-W/O iye kuhlobo lwe-O/W, noma ngokuphambene nalokho, ngenxa yezinguquko ezimweni ze-emulsification, futhi le nqubo yaziwa ngokuthi i-phase inversion.
6. Ukuvuthwa kwe-Ostwald
Ama-emulsion anamaconsi osayizi abahlukene (ama-polydisperse emulsions) angahlala eqinile futhi amelane nokugoqeka noma ukuhlangana. Kodwa-ke, ngokuhamba kwesikhathi, ukusatshalaliswa kosayizi wamaconsi kushintshela kumaconsi amakhulu, ijika lokusatshalaliswa kosayizi wamaconsi liba likhulu kakhulu, futhi osayizi bamaconsi bavame ukuba bafana. Lesi simo, esifana nenqubo yokuvuthwa kwekristalu, sibizwa ngokuthi ukuvuthwa kwe-Ostwald.
Isikhathi sokuthunyelwe: Ephreli-24-2026