Thermal and photochemical stability of polystyrene and its blends with polyvinyl chloride I. |
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Authors: | A Kamińska S Sanyal H Kaczmarek |
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Institution: | (1) Institute of Chemistry, N. Copernicus University, 87 100 Torun, Poland |
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Abstract: | The influence of a 1–20% content of PVC in PS films on their thermal stability was investigated. It was found that the thermal stabilities of these blends are higher than that of either of the two pure polymers. This indicated the mutual stabilizing effects of these polymers on each other. The effect is significant when the PVC content in the blends is 1–5%. A higher amount of PVC causes either no significant change or a lowering of the thermal stability. The miscibility of the polymer components in the blends clearly has an important influence on the course of the thermal processes.
Zusammenfassung Der Einfluß von 1–20% PVC in PS-Filmen auf deren thermische Stabilität wurde untersucht. Es wurde festgestellt, daß die thermische Stabilität dieser Gemische höher ist, als die der beiden reinen Polymere für sich. Dies verdeutlicht den gegenseitigen Stabilisierungseffekt der beiden Polymere. Zu einem signifikanten Effekt kommt es bei einem PVC Gehalt der Gemische von 1–5%. Ein höherer Gehalt an PVC führt entweder zu keiner signifikanten Veränderung oder zu einer Abnahme der thermischen Stabilität. Die Mischbarkeit der Polymerkomponenten des Gemisches verfügt eindeutig über einen wichtigen Einfluß auf den Ablauf der thermischen Prozesse.
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![acy](/content/p5372u658v563370/xxlarge1072.gif) ![zhcy](/content/p5372u658v563370/xxlarge1078.gif) ![iecy](/content/p5372u658v563370/xxlarge1077.gif) ![pcy](/content/p5372u658v563370/xxlarge1087.gif) ![ocy](/content/p5372u658v563370/xxlarge1086.gif) ![ncy](/content/p5372u658v563370/xxlarge1085.gif) ![zhcy](/content/p5372u658v563370/xxlarge1078.gif) ![iecy](/content/p5372u658v563370/xxlarge1077.gif) ![ncy](/content/p5372u658v563370/xxlarge1085.gif) ![icy](/content/p5372u658v563370/xxlarge1080.gif) . ![Scy](/content/p5372u658v563370/xxlarge1057.gif) ![mcy](/content/p5372u658v563370/xxlarge1084.gif) ![iecy](/content/p5372u658v563370/xxlarge1077.gif) ![shcy](/content/p5372u658v563370/xxlarge1096.gif) ![icy](/content/p5372u658v563370/xxlarge1080.gif) ![vcy](/content/p5372u658v563370/xxlarge1074.gif) ![acy](/content/p5372u658v563370/xxlarge1072.gif) ![iecy](/content/p5372u658v563370/xxlarge1077.gif) ![mcy](/content/p5372u658v563370/xxlarge1084.gif) 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![lcy](/content/p5372u658v563370/xxlarge1083.gif) ![ncy](/content/p5372u658v563370/xxlarge1085.gif) ![ocy](/content/p5372u658v563370/xxlarge1086.gif) ![vcy](/content/p5372u658v563370/xxlarge1074.gif) ![lcy](/content/p5372u658v563370/xxlarge1083.gif) ![icy](/content/p5372u658v563370/xxlarge1080.gif) ![yacy](/content/p5372u658v563370/xxlarge1103.gif) ![ncy](/content/p5372u658v563370/xxlarge1085.gif) ![icy](/content/p5372u658v563370/xxlarge1080.gif) ![ncy](/content/p5372u658v563370/xxlarge1085.gif) ![khcy](/content/p5372u658v563370/xxlarge1093.gif) ![ocy](/content/p5372u658v563370/xxlarge1086.gif) ![tcy](/content/p5372u658v563370/xxlarge1090.gif) ![iecy](/content/p5372u658v563370/xxlarge1077.gif) ![rcy](/content/p5372u658v563370/xxlarge1088.gif) ![mcy](/content/p5372u658v563370/xxlarge1084.gif) ![icy](/content/p5372u658v563370/xxlarge1080.gif) ![chcy](/content/p5372u658v563370/xxlarge1095.gif) ![iecy](/content/p5372u658v563370/xxlarge1077.gif) ![scy](/content/p5372u658v563370/xxlarge1089.gif) ![kcy](/content/p5372u658v563370/xxlarge1082.gif) ![icy](/content/p5372u658v563370/xxlarge1080.gif) ![pcy](/content/p5372u658v563370/xxlarge1087.gif) ![rcy](/content/p5372u658v563370/xxlarge1088.gif) ![ocy](/content/p5372u658v563370/xxlarge1086.gif) ![tscy](/content/p5372u658v563370/xxlarge1094.gif) ![iecy](/content/p5372u658v563370/xxlarge1077.gif) ![scy](/content/p5372u658v563370/xxlarge1089.gif) ![ocy](/content/p5372u658v563370/xxlarge1086.gif) .
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