Polystyrene and pvc are hard and brittle at room temperature. Polystyrene is solid at room temperature but flows when heated above 100 degree C its Tg, after cooling it becomes rigid. For pvc by adding small amount of plasticizer its tg becomes -40 degree C so it becomes soft and flexible.
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Explain glass transition temperature?
Temperature above nu sollitu -105°C - la potrukinga..
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Well explained👍 Understood.. Thank you🤍
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Semester Preparation😂❤
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Mam polystyrene pvc ku thana temperature high ah irukku so sthana soft ah irukkanum
Polystyrene and pvc are hard and brittle at room temperature. Polystyrene is solid at room temperature but flows when heated above 100 degree C its Tg, after cooling it becomes rigid. For pvc by adding small amount of plasticizer its tg becomes -40 degree C so it becomes soft and flexible.
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