Garnaik, Baijayantimala ; Sivaram, Swaminathan (1996) Study of polymer-plasticizer interaction by 13C CP/MAS NMR spectroscopy: poly(vinyl chloride)-bis (2-ethylhexyl) phthalate system Macromolecules, 29 (1). pp. 185-190. ISSN 0024-9297
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ma951086x
Related URL: http://dx.doi.org/10.1021/ma951086x
Abstract
Solid state 13C CP/MAS studies of poly(vinyl chloride) (PVC)-bis(2-ethylhexyl) phthalate (DOP) have been carried out to elucidate the dynamics of polymer-plasticizer interaction at the molecular level. 13C NMR spectra, spin-lattice relaxation time T1(C) and spin-spin relaxation time T2(C) were obtained for various PVC-DOP samples. Line widths of >CH - Cl show a sharp increase due to the strong hydrogen-bonding interaction between the >C = O (ester) group of DOP and >CHCl of PVC with various concentrations of DOP. The spin-lattice relaxation time T1(C) also confirms the presence of a strong interaction due to hydrogen bonding. The less mobile intermediate phase is mostly affected by the presence of plasticizer. The spin-spin relaxation time T2(C) shows that DOP is a mixed type plasticizer showing the features of both molecular and structural type plasticization.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 48506 |
| Deposited On: | 14 Jul 2011 10:15 |
| Last Modified: | 14 Jul 2011 10:15 |
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