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Surface modification of EVA copolymer by UV treatment

✍ Scribed by Marı́a Dolores Landete-Ruiz; José Miguel Martı́n-Martı́nez

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
513 KB
Volume
25
Category
Article
ISSN
0143-7496

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✦ Synopsis

The adhesion between a polychloroprene adhesive and an ethylene vinyl acetate copolymer containing 12 wt% vinyl acetate (EVA12) was improved by treatment with UV radiation. Changes in the EVA12 surface due to UV radiation treatment were assessed using contact angle measurements, ATR-IR spectroscopy, XPS, SEM and T-peel tests. Adhesion was evaluated from Tpeel tests of treated EVA12/ polychloroprene adhesive +5 wt% polyisocyanate. Treatment of EVA12 with UV radiation increased its wettability, carbon-oxygen polar moieties were produced and roughness was created. As a consequence, adhesion of EVA12 to polychloroprene adhesive +5 wt% polyisocyanate was enhanced by treatment with UV radiation longer than 5 min. A mixed failure (mainly cohesive failure in EVA12) was obtained.

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