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Effect of the fold surface of the lamellae on the behavior of the trapped radicals in irradiated Polyamide-1010

✍ Scribed by Jiayan Yu; Baozhong Li; Lihua Zhang

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
146 KB
Volume
67
Category
Article
ISSN
0021-8995

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✦ Synopsis

Two types of macromolecular free radicals {CH 2 CONHC g HCH 2 { (a) and {CH 2 C g |O (b) trapped in irradiated Polyamide-1010 (PA1010) and PA1010 filled with neodymium oxide (Nd 2 O 3 ) were characterized by an ESR approach. It was found out that a was mainly trapped in the fold surface of the lamellae and b in the amorphous phase. This result suggested that trapped radicals mainly existed in the noncrystalline phases. The effect of the fold surface area of the lamellae on the behavior of the trapped radicals are discussed in this article. Whether for the specimens with similar crystallinities but different crystallite sizes or for those with the same concentration of neodymium oxide but different crystallinities, radical a exists dominantly in a specimen with a larger fold surface area of the lamellae. Under a certain circumstance, radical a can transform into radical b for a specimen with a larger fold surface area of the lamellae. It means that the fold surface area of the lamellae plays an important role in the transformation of radical a to b.

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