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Polymers 2011, 3(2), 762-778; doi:10.3390/polym3020762
Article

Polyelectrolyte Complex Nanoparticles of Poly(ethyleneimine) and Poly(acrylic acid): Preparation and Applications

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Received: 28 February 2011; Accepted: 29 March 2011 / Published: 12 April 2011
(This article belongs to the Special Issue Polyelectrolytes)
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Abstract: In this contribution we outline polyelectrolyte (PEL) complex (PEC) nanoparticles, prepared by mixing solutions of the low cost PEL components poly(ethyleneimine) (PEI) and poly(acrylic acid) (PAC). It was found, that the size and internal structure of PEI/PAC particles can be regulated by process, media and structural parameters. Especially, mixing order, mixing ratio, PEL concentration, pH and molecular weight, were found to be sensible parameters to regulate the size (diameter) of spherical PEI/PAC nanoparticles, in the range between 80–1,000 nm, in a defined way. Finally, applications of dispersed PEI/PAC particles as additives for the paper making process, as well as for drug delivery, are outlined. PEI/PAC nanoparticles mixed directly on model cellulose film showed a higher adsorption level applying the mixing order 1. PAC 2. PEI compared to 1. PEI 2. PAC. Surface bound PEI/PAC nanoparticles were found to release a model drug compound and to stay immobilized due to the contact with the aqueous release medium.
Keywords: poly(ethyleneimine); poly(acrylic acid); polyelectrolyte complex; polymer nanoparticles; colloid coagulation; cellulose modification; drug delivery poly(ethyleneimine); poly(acrylic acid); polyelectrolyte complex; polymer nanoparticles; colloid coagulation; cellulose modification; drug delivery
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Müller, M.; Keßler, B.; Fröhlich, J.; Poeschla, S.; Torger, B. Polyelectrolyte Complex Nanoparticles of Poly(ethyleneimine) and Poly(acrylic acid): Preparation and Applications. Polymers 2011, 3, 762-778.

AMA Style

Müller M, Keßler B, Fröhlich J, Poeschla S, Torger B. Polyelectrolyte Complex Nanoparticles of Poly(ethyleneimine) and Poly(acrylic acid): Preparation and Applications. Polymers. 2011; 3(2):762-778.

Chicago/Turabian Style

Müller, Martin; Keßler, Bernd; Fröhlich, Johanna; Poeschla, Sebastian; Torger, Bernhard. 2011. "Polyelectrolyte Complex Nanoparticles of Poly(ethyleneimine) and Poly(acrylic acid): Preparation and Applications." Polymers 3, no. 2: 762-778.


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