Morphological effects on mechanical properties of polystyrene-polyvinylchloride blends |
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| Authors: | Vishal Mathur Manasvi Dixit N.S. Saxena Kananbala Sharma |
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| Affiliation: | 1. Semi-conductor &2. Polymer Science Laboratory , 5–6, Vigyan Bhawan, University of Rajasthan , Jaipur – 302004, Rajasthan, India wishalmathur@yahoo.co.in;4. Polymer Science Laboratory , 5–6, Vigyan Bhawan, University of Rajasthan , Jaipur – 302004, Rajasthan, India |
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| Abstract: | The morphological effects on mechanical properties of polystyrene/polyvinylchloride (PS/PVC) polymer blends were investigated through dynamic mechanical analyzer. Study reveals that the peaks of Tan δ curves of pure PVC and pure PS samples fall at temperatures 58.9 ± 0.2°C and 113.1 ± 0.1°C, respectively. Tan δ curves of 30, 50 and 70-wt% of PVC blends show two peaks indicating the immiscibility of PS/PVC blend. It has been observed that peak falling at lower temperature side shifts towards the higher temperature with the increase of PS concentration and the other one which falls at higher temperature side shifts towards lower temperature side with the increase of PVC concentration in PS/PVC blends. The variation in mechanical performance is attributed to the polymer domain interactions resulting from the different morphologies of various blend compositions. |
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| Keywords: | storage modulus glass transition temperature polymeric blend mechanical properties |
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