Theoretical and experimental study of surface forces in disperse systems
نویسندگان
چکیده
Teoretické a experimentálne štúdium povrchových síl v disperzných systémoch V príspevku sú stručne zhodnotené výsledky priamych experimentálnych meraní povrchových síl medzi makroskopickými povrchmi so zvláštnym dôrazom na tzv. štrukturálny, resp. hydratačno-hydrofóbny typ povrchových síl. Súčasne sú analyzované povrchové sily medzi mikroskopickými časticami modelových disperzných systémov, a to nepriamo z ich agregačnej kinetiky, a porovnané s uvedenými výsledkami priamych meraní povrchových síl. Prezentované sú aj dielčie výsledky meraní kinetiky homokoagulácie vodného sólu SiO2, pridaním koagulantov u ktorých sa predpokladá potlačujúci účinok na hydratačnú (KCl) a stimulačný účinok na hydrofóbnu (cetyltrimetylamónium bromid CTAB) interakciu častíc uvedeného hydrosólu ako aj výsledky stanovenia heteroagregácie zo spektier elektroforetického rozptylu svetla binárneho sólu SiO2. Tieto merania zatiaľ nepotvrdili existenciu spomínaných krátkodosahových typov povrchových síl.
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تاریخ انتشار 2005