Interpolymer complexation and thermal behaviour of poly(styrene-co-maleic acid)/poly(vinyl pyrrolidone) mixtures |
| |
| Authors: | Nabila Haddadine-Rahmoun Farouk Amrani Valeria Arrighi John MG Cowie |
| |
| Institution: | aUniversity of Sciences and Technology, Houari Boumediene, Faculty of Chemistry, Laboratory of Polymer Chemistry, B.P. 32, El-Alia, Algiers 16111, Algeria;bChemistry, School of Engineering and Physical Sciences, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, UK |
| |
| Abstract: | Polymer complexation between poly(styrene-co-maleic acid), (SMA28) and (SMA50) containing 28 and 50 mol% of maleic acid and poly(vinyl pyrrolidone) (PVP), has been investigated by differential scanning calorimeter (DSC), Fourier-transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). All results showed that the ideal complex composition of SMA28/PVP and SMA50/PVP leads, respectively, to 2:1 and 1:1 mole ratio of interacting components.For the investigated systems, the Tg versus composition curve does not follow any of the usual proposed models for polymer blends. Withal, a new model proposed by Cowie et al. is used to fit the Tg data and it is found to reproduce the experimental results more closely. According to n and q obtained values, it seems reasonable to conclude that the inter-associated hydrogen bonds dominate in SMA28/PVP (2:1) complexes. This effect is corroborated by the FTIR study as evidenced by the high displacement of the specific bands and ionic interactions have been clearly identified. Finally, a thermogravimetric study shows that ionic interactions increase the thermal stability of these complexes. |
| |
| Keywords: | Hydrogen-bonding Interpolymer complexes Modified Kwei equation Poly(styrene-co-maleic acid) Poly(vinyl pyrrolidone) |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
