FTIR-ATR monitoring and SEC/RI/MALLS characterization of ATRP synthesized hyperbranched polyacrylates

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

Miguel A. D. Gonçalves (Author) FEUP; Mário Rui P. F. N. Costa (Author) FEUP; Rolando C. S. Dias (Author) Other; Virgínia D. Pinto (Author) FEUP

Conference proceedings International

Title: MODERN TRENDS IN POLYMER SCIENCE-EPF 09

Pages: 210-228

12th European-Polymer-Federation Congress

Graz, AUSTRIA, JUL 12-17, 2009

Indexing

ISI Web of Knowledge - 6 Citations

Scopus - 5 Citations

INSPEC

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences > Engineering > Chemical engineering

Other information

Authenticus ID: P-003-C17

DOI: 10.1002/masy.201051031

Abstract (EN): This work reports the synthesis at 1 L scale of hyperbranched polyacrylates based upon acrylate/diacrylate monomers such as n-butyl acrylate (nBA)/1,6-hexanediol diacrylate (HDDA) and using atom transfer radical polymerization (ATRP). A FTIR-ATR immersion probe was used to monitor the polymerization reaction. The dynamics of the build-up of polymer structure was studied by off-line analysis of samples at different reaction times by size exclusion chromatography (SEC) with detection of refractive index (RI) and multi-angle laser light scattering (MALLS) signals, leading to molecular weight distribution and z-average radius of gyration. Kinetic measurements and observed parameters of the molecular architecture are compared with theoretical predictions which can be used to design new synthesis strategies to improve the homogeneity of hyperbranched polymers. Another goal of this study was elucidating the impact on polymerization of secondary reactions such as intramolecular cyclizations. For comparison purposes, FRP (conventional radical polymerization) of the same monomers is also considered.

Language: English

Type (Professor's evaluation): Scientific

Notes: Special Issue: Modern Trends in Polymer Science – EPF'09

No. of pages: 19