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Advances in Materials Science and Engineering - Volume 2016 2016, Article ID 6430416, 9 pages -

Research Article

Department of General Chemistry, University Politehnica Bucharest, 1-7 Gheorghe Polizu Sector 1, 011061 Bucharest, Romania

Department of Bioresources and Polymer Science, University Politehnica Bucharest, 1-7 Gheorghe Polizu Sector 1, 011061 Bucharest, Romania

Centre for Organic Chemistry Costin D. Nenitescu, Romanian Academy, 202B Splaiul Independentei, CP 35-108, 060023 Bucharest, Romania

Institute of Macromolecular Chemistry -Petru Poni- Iasi, 41A Aleea Grigore Ghica Voda, 700487 Iasi, Romania

Received 28 January 2016; Revised 30 May 2016; Accepted 23 June 2016

Academic Editor: Peter Chang

Copyright © 2016 Anca Aldea et al. 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.

Abstract

Two N-substituted amides N-acryloyl morpholine and N-methyl-N-vinylacetamide were polymerized in different solvents using radical initiator. The tacticity of obtained polymers was determined by 400 MHz

H-NMR and

C-NMR. At a given temperature, the syndiotacticity increased with increasing the solvent polarity. This solvent effect may be related to the hydrogen bonding interaction among solvent, monomer, and-or growing species. A peculiar aspect regards the steric hindrance at the nitrogen atom.





Autor: Anca Aldea, Ana-Maria Albu, Alina Nicolescu, and Victorita Tecuceanu

Fuente: https://www.hindawi.com/



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