Preparation and Properties of PVC/ELNR-30 Blends
- 1
- 2
- 3
- 4
Abstract
The mechanical and thermal properties of solution-cast blends of Polyvinyl chloride (PVC) and Epoxidized Liquid Natural Rubber having 30 mole % epoxidation (ELNR-30) have been examined using Zwick materials testing machine and heating in air circulating oven (200°C) at different time intervals respectively. The ELNR was prepared by oxidative degradation of natural rubber latex using Phenylhydrazine/Oxygen system and subsequent epoxidation with formic acid and 30% H<sub>2</sub>O<sub>2</sub>. Tensile strength of unblended PVC was 26.5 ± 0.5 MPa. The blends had lower tensile strength which decreased with increase in blend ratio of ELNR-30. Experimental data revealed that there was greater homogeneity in the PVC/ELNR-30 (80/20) compared with PVC/ELNR-30 (90/10). The PVC/ELNR-30 (80/20) also showed superior elongation at maximum (%) than the unblended PVC and PVC/ELNR-30 (90/10) in that order. Thermal stability decreased in the order PVC, PVC/ELNR-30 (90/10), PVC/ELNR-30 (80/20).
- A. S. Hashim, S. K. Ong and R. S. Jessey, “A General Review of Recent Developments on Chemical Modification of NR,” Newsletter of the Rubber Foundation Information Center for Natural Rubber (Natuur Rubber), Vol. 28, 2002, pp. 3-9.
- P. Phinyocheep and S. Daunthong, “Ultraviolet Curable Liquid Natural Rubber,” Journal of Applied Polymer Sciences, Vol. 78, No. 8, 2002, pp. 1478-1485. doi:10.1002/1097-4628(20001121)78:8 3.0.CO;2-K
- M. N. Radhakrishnan Nair, P. K. Biju, G. V. Thomas and M. R. Gopinathan Nair, “Blends of PVC and Epoxidized Liquid Natural Rubber: Studies on Impact Modification,” Journal of Applied Polymer Sciences, Vol. 111, No. 111, 2008, pp. 48-56. doi:10.1002/app.28884
- M. N. Radhakrishnnan Nair, G. V. Thomas and M. R. G. Nair, “Thermogravimetric Analysis of PVC/ELNR Blends,” Polymer Degradation and Stability, Vol. 11, No. 2, 2006, pp. 14-18. doi:10.1016/j.polymdegradstab.2006.11.014
- F. Findik, R. Yiimaz and T. Koksal, “Investigation of Mechanical and Physical properties of Several Industrial Rubbers,” Materials & Design, Vol. 25, No. 4, 2004, pp. 269-276. doi:10.1016/j.matdes.2003.11.003
- F. E. Okieimen and A. K. Akinlabi, “Processing Characteristics and Physicochemical Properties of Natural Rubber and Liquid Natural Rubber Blends,” Journal of Applied Polymer Sciences, Vol. 85, No. 5, 2002, pp. 1070-1076. doi:10.1002/app.10666
- C. Hall, “Polymer Materials,” Machmilian Press, Hong Kong, 1981.