Irreversible adsorption of colloids and proteins at heterogeneous surfaces

• Autorzy: Adamczyk Z. , Weroński P. , Musiał E.
• Języki publikacji: EN

Abstrakty

EN

Irreversible adsorption of colloid particles at heterogeneous surfaces was studied theoretically. In contrast to previous models, the dimension of the adsorption sites having the shape of circular discs, was comparable with the size of adsorbing spheres. Adsorption was assumed to occur if the sphere contacted the disc only. Numerical simulation of the Monte-Carlo type enabled one to determine particle flux, adsorption kinetics and jamming coverage as a function of the site density (coverage) and the size ratio particle/site, denoted by lambda . It was demonstrated that adsorption kinetics and the jamming coverage increased significantly, at a fixed site density, when lambda increased, i.e., for larger particle to site size ratio. It was also proven that the results derived from previous model elaborated for negligible site dimensions are valid only if lambda > 10.

Słowa kluczowe

EN

adsorption; colloid; heterogeneous surface; protein adsorption

PL

adsorpcja; koloid; proteiny; powierzchnia niejednorodna

• Wydawca: Centrum Upowszechniania Nauki PAN
• Czasopismo: Bulletin of the Polish Academy of Sciences. Chemistry
• Rocznik: 2002
• Tom: Vol. 50, No. 2
• Strony: 175--187
• Opis fizyczny: Bibliogr. 18 poz.

Twórcy

autor

Adamczyk Z.

autor

Weroński P.

autor

Musiał E.

• Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 8, 30-239 Kraków, Poland (Instytut Katalizy i Fizykochemii Powierzchni PAN)