88.6 Classification of dispersion system
§8.6 Classification of dispersion system
88.6 Classification of dispersion system 8.6.1 Grahams experimental observation Fig.1— Hoop Dialyser Thomas Graham(Dec 20, 1805-Sep 16, 1869)was a Scottish chemist regarded as the father of colloid chemistry
8.6.1 Graham’s experimental observation Thomas Graham (Dec. 20, 1805 – Sep. 16, 1869) was a Scottish chemist regarded as the father of colloid chemistry. §8.6 Classification of dispersion system
88.6 Classification of dispersion system 8.6.1 Graham's experimental observation TABLE I--Diffusion of 10 per cent solutions(10 grammes of substance in 100 cub. cen of fluid) into pure water, after fourteen days, at 10(50 FAHR). (from abore downward )./Chloride of sodi Number uf stratum Gu. Tannin 104 1234 567898】g3 1·731 9999 10003 9·999 9997 Approximate times of equal difusion Hydrochloric acid Chloride of sodium 1277 33 Albumen(蛋白 Sulphate of magnesia Albumen 49 Caramel(饴糖) Caramel,,,,.... .,,98
8.6.1 Graham’s experimental observation §8.6 Classification of dispersion system Albumen (蛋白) Caramel（饴糖）
88.6 Classification of dispersion system 8.6.2 Definition of colloids kinds p Diffusion Semi-permeable membrane Crystalloids salt, sugar rapid Permeable Colloids protein, Fe(OH)slow Non-permeable Fundamental concepts Colloids, sol, gel, peptization, dialysis
kinds samples Diffusion Semi-permeable membrane Crystalloids salt, sugar rapid Permeable Colloids protein, Fe(OH)3 slow Non-permeable Colloids, sol, gel, peptization, dialysis. Fundamental concepts 8.6.2 Definition of colloids §8.6 Classification of dispersion system
88.6 Classification of dispersion system 8.6.2 Definition of colloids Lyophilic sols: Lyophobic sols: The colloidal particles interact strongly The colloidal particles and th ith the dispersion medium Solution of dispersion medium has no tendency to macromolecules(not“true” solution?) interact. Silica sol, Fe(OH)3 sol
Lyophilic sols: The colloidal particles interact strongly with the dispersion medium. Solution of macromolecules (not “true” solution?) Lyophobic sols: The colloidal particles and the dispersion medium has no tendency to interact. Silica sol, Fe(OH)3 sol. 8.6.2 Definition of colloids §8.6 Classification of dispersion system