The effect of base stabilization on the recyclability of polypropylene as studied by multi-cell imaging chemiluminescence and microcalorimetry

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• 作者：Hamskog ; M. ; Klü ; gel ; M. ; Forsströ ; m ; D. ; Terselius ; B. ; Gijsman ; P.
• 关键词：Polypropylene ; Recycling ; Chemiluminescence ; Microcalorimetry ; Oven ageing ; TAM III ; Oxidation ; Stabilization ; Degradation ; Processing ; Discolouration ; Embrittlement
• 刊名：Polymer Degradation and Stability
• 出版年：2004
• 出版时间：December, 2004
• 年：2004
• 卷：86
• 期：3
• 页码：557-566
• 全文大小：460 K

文摘

The influence of the base stabilization on the recyclability of polypropylene (PP) was determined by subjecting two polypropylenes with different base stabilization systems to different sequences of oven ageing and reprocessing (only oven ageing, only reprocessing and alternating processing and oven ageing). The base stabilization of the PPs used was a combination of Irganox 1076 and Irgafos 168 (PP1) and a combination of Irganox 1010 and Irgafos 168 (PP2). The influence of oven ageing and reprocessing was determined using mechanical property, colour and oxidative stability measurements. The oxidative stability was determined using chemiluminescence (CL) techniques involving oxidation induction time (OIT) and total luminous intensity (TLI). For comparison, microcalorimetry was also used.