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Preparation and study of a mixture of unsaturated polyester (UPE) with polyvinyl acetate (PVAc) and polyvinyl chloride (PVC) to improve its thermal and photo properties | ||
| Journal of University of Anbar for Pure Science | ||
| Article 13, Volume 1, Issue 3, 2007, Pages 50-63 PDF (1.13 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.37652/juaps.2007.15582 | ||
| Authors | ||
| Ahmed Mohammed* ; Hameed Ali; Tariq mondeel | ||
| college of science, university of Anbar | ||
| Abstract | ||
| Due to the important applications of the unsaturated polyester under normal climate conditions, this study dealt with polymer blends of this polymer with polyvinyl acetate (PVAc), using tetra hydrofuran (THF) as asolvent according to the following weight to weight ratios (W/W) (11%,12%,13%,14.5%,16%,17%). Films were made from these two polymers and they were expossed to UV light of 365nm as wave length for 200 hours at room temperature continously. Another set of films were expossed to heat (80C0) for the same period (thermal aging).IR , UV and light microscope techniques were used to follow up the thermal and photo degradation of this system.It has been found that the practical results have shown agreement with the proposed theory which indicate that the PVAc undergoes cross-linking reactions rather than chain degradation, also it has been noticed that the effect of UV radiation is more effective in comparison with that of the heat. By using the same method mentioned above a study on (UPE+PVC) was carried out under the same conditions. It has been noticed that PVC makes the system more stable especially against the UV light and the effect of heat is more significant than that of the radiation because the PVC did not contain the chromophores can be react with light. The photographs that have taken by the photo microscope showed agreement with that of the UV and the IR spectra . In such away that these systems suffered surface oxidative reactions and then crosslinking rather than chain degradation. Better weathering resistant polyblends of (UPE) were obtained in this study towards heat and UV effects. | ||
| Keywords | ||
| PVAC; PVC; electric; material | ||
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