Chemical imaging of single polyethylenimine polymers by chemical force microscopy

Autor:	D. Horn, Wolfgang Dr Schrepp, S. Akari
Rok vydání:	1996
Předmět:	Chemical imaging chemistry.chemical_classification Polyethylenimine Flocculation Microscope General Chemical Engineering Chemical modification Polymer adsorption Polymer law.invention chemistry.chemical_compound chemistry Chemical force microscopy Chemical engineering law Polymer chemistry
Zdroj:	Berichte der Bunsengesellschaft für physikalische Chemie. 100:1014-1016
ISSN:	0005-9021
Popis:	Polymer adsorption effects are of prime importance in technical applications i.e. for flocculation in paper making or the cleaning of waste water. In this paper we report on the direct imaging of single polyethylenimine polymers adsorbed on negatively charged latex spheres. Chemical imaging was achieved by a proper chemical modification of the tip of a conventional scanning force microscope. The imaging was performed by operating the microscope in the friction mode thus giving information about the adhesion properties of the polymers under investigation. Imaging is even possible in an aqueous environment. The results are in good agreement with quasi elastic light scattering measurements and former models of the mechanism of action of polyethylenimine in flocculation processes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::792b7ff826ac69dd2c3576f403cc9006 https://doi.org/10.1002/bbpc.19961000652 Zobrazit plný text záznamu Plný text