Solution Properties of Dendronized Poly(Hydroxy Ethyl Methacrylate) Polymers
2006 (English)In: Journal of Polymer Science Part A: Polymer Chemistry, ISSN 0887-624X, E-ISSN 1099-0518, Vol. 44, no 11, 3674-3683 p.Article in journal (Refereed) Published
Four generations of dendronized polymers with a methacrylate backbone and hydroxy-functionalized aliphatic polyester dendrons based on 2,2-bis(methylol)propionic acid were studied in solutions by rheological measurements, dynamic light scattering, turbidimetry, and H-1 NMR self-diffusion measurements to reveal the effect of increasing hydrophilicity and molecular size on their solution properties. The studied polymers were interesting new amphiphiles with a hydrophobic main chain and a hydrophilic shell. Evidence of aggregation upon the heating of the first-generation polymer in an aqueous solution was obtained by dynamic light scattering and turbidimetry, reflecting the effect of the hydrophobic polymer backbone, whereas the higher generation polymers did not show aggregation upon heating. Although the dimensions of the polymers were observed to increase with increasing generation, all the polymers exhibited low viscosities and Newtonian flow behavior in both aqueous and dimethyl sulfoxide solutions. The relative viscosities of the polymers in water and dimethyl sulfoxide showed that the conformation of the polymers was somewhat more open in dimethyl sulfoxide, and this led to higher viscosities than those in water, in agreement with the H-1 NMR diffusion measurements, by which the dimensions were found to be larger for the polymers dissolved in dimethyl sulfoxide.
Place, publisher, year, edition, pages
2006. Vol. 44, no 11, 3674-3683 p.
dendrimers, NMR; viscosity, water-soluble polymers
IdentifiersURN: urn:nbn:se:kth:diva-5748DOI: 10.1002/pola.21471ISI: 000237704000024ScopusID: 2-s2.0-33744832419OAI: oai:DiVA.org:kth-5748DiVA: diva2:10221
QC 201009142006-05-172006-05-172010-09-14Bibliographically approved