Thermal expansion of ultradrawn polystyr
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Wang, Li-Hui ;Choy, C. L. ;Porter, Roger S.
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Article
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1982
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Wiley (John Wiley & Sons)
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English
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## Abstract Measurements on the linear thermal expansivities ฮฑโฅ and ฮฑโฅ parallel and perpendicular to the extrusion direction, respectively, have been carried out between โ160 and 30ยฐC for atactic polystyrene (aPS) with extrusion ratio 1 โคฮปโค 15 and isotactic polystyrene (iPS) with 1 โคฮปโค 7.5. For bot