Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5202844 | Polymer Degradation and Stability | 2010 | 6 Pages |
Abstract
Polypropylene ionic thermoplastic elastomers have been prepared by melt radical grafting of maleic anhydride onto polypropylene in the presence of N-bromosuccinimide followed by neutralization of the resulting elastomeric grafted polypropylene using sodium salts. Sodium hydroxide and sodium acetate were compared in aqueous solution, as anhydrous or hydrated powders. The neutralization reaction was followed by Fourier transform infrared spectroscopy, allowing the development of a method to determine the effective neutralization degree. Important physical changes were recorded upon neutralization. Especially thermal stability, shear storage modulus and complex viscosity in the flow region were largely increased as a function of the neutralization degree.
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Authors
Dimitri D.J. Rousseaux, Xavier Drooghaag, Michel Sclavons, Pierre Godard, Veronique Carlier, Jacqueline Marchand-Brynaert,