Characterisation of stabilizers in polyamide using DSC technique |
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Authors: | P S Jain W Surer |
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Institution: | (1) Labindia Instruments Pvt. Ltd., 201, Nand Chambers, L B S Marg, 400 602 Thane, India;(2) Perkin-Elmer AG, Kohlrainstrasse 10, 8700 Kunsnatch, Switzerland |
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Abstract: | Antioxidants are added to the polymers to suppress oxidation during the service life. The paper deals with determination of stabilizer (VANOX-SKT) antioxidant in polyamides using a differential scanning calorimeter. Normally the amount of antioxidants is determined using HPLC method which takes more than 48 hours for sample preparation. A series of polyamide samples with known content of antioxidants (0.0–0.8%) are analysed using DSC form –50 to 350 °C in oxygen atmosphere keeping Al-crucibles open. For all the compositions a linear relationship was found for H (heat of degradation) and induction time under isothermal conditions at 220 °C which enables the antioxidant VANOX-SKT to be determined in unknown samples.
Zusammenfassung Zur Unterdrückung der Oxydation von Polymeren während der Nutzungsdauer werden diese mit Antioxydationsmitteln versetzt. Die vorliegende Arbeit beschäftigt sich mit der Bestimmung von Stabilisatoren (VANOX-SKT Antioxydans) in Polyamiden mit Hilfe eines Differential-Scanning-Kalorimeters. Auf herkömmliche Art und Weise wird der Antioxydansgehalt mittels HPLC bestimmt was jedoch wegen der Probenvorbereitung mehr als 48 Stunden dauert. Mittels DSC von –50 bis 350 °C in Sauerstoffatmosphäre in offenen Aluminiumtiegeln wurde eine Reihe von Polyamidproben mit bekanntem Antioxydansgehalt (0,0–0,8%) untersucht. Für alle Zusammensetzungen konnte zwischen der Zersetzungswärme H und der Induktionszeit unter isothermen Bedingungen bei 220 °C ein linearer Zusammenhang festgestellt werden, welcher die Bestimmung des VANOX-SKT Antioxydansgehaltes von unbekannten Proben erlaubt.
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![icy](/content/j210550w58114423/xxlarge1080.gif) ![zcy](/content/j210550w58114423/xxlarge1079.gif) ![vcy](/content/j210550w58114423/xxlarge1074.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![ycy](/content/j210550w58114423/xxlarge1099.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![dcy](/content/j210550w58114423/xxlarge1076.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![zhcy](/content/j210550w58114423/xxlarge1078.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![kcy](/content/j210550w58114423/xxlarge1082.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) (0–0,8%) ![bcy](/content/j210550w58114423/xxlarge1073.gif) ![ycy](/content/j210550w58114423/xxlarge1099.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![zcy](/content/j210550w58114423/xxlarge1079.gif) ![ucy](/content/j210550w58114423/xxlarge1091.gif) ![chcy](/content/j210550w58114423/xxlarge1095.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![mcy](/content/j210550w58114423/xxlarge1084.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![dcy](/content/j210550w58114423/xxlarge1076.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![Dcy](/content/j210550w58114423/xxlarge1044.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![kcy](/content/j210550w58114423/xxlarge1082.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![ycy](/content/j210550w58114423/xxlarge1099.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![ycy](/content/j210550w58114423/xxlarge1099.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![yucy](/content/j210550w58114423/xxlarge1102.gif) ![mcy](/content/j210550w58114423/xxlarge1084.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![vcy](/content/j210550w58114423/xxlarge1074.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![gcy](/content/j210550w58114423/xxlarge1075.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![yacy](/content/j210550w58114423/xxlarge1103.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![mcy](/content/j210550w58114423/xxlarge1084.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![fcy](/content/j210550w58114423/xxlarge1092.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![dcy](/content/j210550w58114423/xxlarge1076.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![vcy](/content/j210550w58114423/xxlarge1074.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![mcy](/content/j210550w58114423/xxlarge1084.gif) ![pcy](/content/j210550w58114423/xxlarge1087.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) – 50 ![dcy](/content/j210550w58114423/xxlarge1076.gif) + 350 °C. ![Dcy](/content/j210550w58114423/xxlarge1044.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![vcy](/content/j210550w58114423/xxlarge1074.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![bcy](/content/j210550w58114423/xxlarge1073.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![zcy](/content/j210550w58114423/xxlarge1079.gif) ![tscy](/content/j210550w58114423/xxlarge1094.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![zcy](/content/j210550w58114423/xxlarge1079.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![mcy](/content/j210550w58114423/xxlarge1084.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![chcy](/content/j210550w58114423/xxlarge1095.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![kcy](/content/j210550w58114423/xxlarge1082.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![ucy](/content/j210550w58114423/xxlarge1091.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![vcy](/content/j210550w58114423/xxlarge1074.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![yacy](/content/j210550w58114423/xxlarge1103.gif) ![pcy](/content/j210550w58114423/xxlarge1087.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) 220 °C ![bcy](/content/j210550w58114423/xxlarge1073.gif) ![ycy](/content/j210550w58114423/xxlarge1099.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![ycy](/content/j210550w58114423/xxlarge1099.gif) ![dcy](/content/j210550w58114423/xxlarge1076.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![jcy](/content/j210550w58114423/xxlarge1081.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![zcy](/content/j210550w58114423/xxlarge1079.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![vcy](/content/j210550w58114423/xxlarge1074.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![mcy](/content/j210550w58114423/xxlarge1084.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![mcy](/content/j210550w58114423/xxlarge1084.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![zhcy](/content/j210550w58114423/xxlarge1078.gif) ![dcy](/content/j210550w58114423/xxlarge1076.gif) ![ucy](/content/j210550w58114423/xxlarge1091.gif) H (![tcy](/content/j210550w58114423/xxlarge1090.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![pcy](/content/j210550w58114423/xxlarge1087.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![pcy](/content/j210550w58114423/xxlarge1087.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![dcy](/content/j210550w58114423/xxlarge1076.gif) ) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![ucy](/content/j210550w58114423/xxlarge1091.gif) ![kcy](/content/j210550w58114423/xxlarge1082.gif) ![tscy](/content/j210550w58114423/xxlarge1094.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![ycy](/content/j210550w58114423/xxlarge1099.gif) ![pcy](/content/j210550w58114423/xxlarge1087.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![dcy](/content/j210550w58114423/xxlarge1076.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) , ![kcy](/content/j210550w58114423/xxlarge1082.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![pcy](/content/j210550w58114423/xxlarge1087.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![vcy](/content/j210550w58114423/xxlarge1074.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![kcy](/content/j210550w58114423/xxlarge1082.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![chcy](/content/j210550w58114423/xxlarge1095.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![vcy](/content/j210550w58114423/xxlarge1074.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![pcy](/content/j210550w58114423/xxlarge1087.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![iecy](/content/j210550w58114423/xxlarge1077.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![tcy](/content/j210550w58114423/xxlarge1090.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![kcy](/content/j210550w58114423/xxlarge1082.gif) ![scy](/content/j210550w58114423/xxlarge1089.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![dcy](/content/j210550w58114423/xxlarge1076.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![ncy](/content/j210550w58114423/xxlarge1085.gif) ![Acy](/content/j210550w58114423/xxlarge1040.gif) ![Ncy](/content/j210550w58114423/xxlarge1053.gif) ![Ocy](/content/j210550w58114423/xxlarge1054.gif) ![Kcy](/content/j210550w58114423/xxlarge1050.gif) -![Scy](/content/j210550w58114423/xxlarge1057.gif) ![Kcy](/content/j210550w58114423/xxlarge1050.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![bcy](/content/j210550w58114423/xxlarge1073.gif) ![rcy](/content/j210550w58114423/xxlarge1088.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![zcy](/content/j210550w58114423/xxlarge1079.gif) ![tscy](/content/j210550w58114423/xxlarge1094.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![pcy](/content/j210550w58114423/xxlarge1087.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) ![lcy](/content/j210550w58114423/xxlarge1083.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![acy](/content/j210550w58114423/xxlarge1072.gif) ![mcy](/content/j210550w58114423/xxlarge1084.gif) ![icy](/content/j210550w58114423/xxlarge1080.gif) ![dcy](/content/j210550w58114423/xxlarge1076.gif) ![ocy](/content/j210550w58114423/xxlarge1086.gif) .
One of the authors (PSJ) is thankful to Perkin-Elmer AG,Switzerland and Jnuig Berchtotd, EMS-Chemie AG, for supporting the above work. |
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Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
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