Premium
Modification of polymers by adsorption phenomena
Author(s) -
Weidenhammer Petra,
Jacobasch HansJörg
Publication year - 1998
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19981260106
Subject(s) - adsorption , polymer , zeta potential , electrolyte , molecule , ion , materials science , adhesion , polymer adsorption , chemical engineering , chemical physics , amphiphile , adhesive , atomic force microscopy , surface forces apparatus , solid surface , nanotechnology , chemistry , organic chemistry , layer (electronics) , composite material , copolymer , electrode , nanoparticle , engineering
The adsorption of ions and amphiphilic molecules on solid polymers is investigated by direct force measurements using an atomic force microscope (AFM). It is shown that electrolyte ions are changing the surface potentials of the solid polymers as well as their adhesive properties. The experiments show that the interaction with a negatively charged probe is dramatically decreased by the adsorption of anions. The adsorption isotherms are determined by zeta potential measurements (streaming potential of flat plates). In presence of adsorbing anions, the attractive interaction and the adhesion are reduced and can be eliminated completely. So, even solutions of simple electrolyte ions can be applied intentionally in order to modify the interaction of polymer surfaces. A wide variety of technological applications becomes accessible.