Study by FT-IR Technique and Adhesive Properties of Vulcanized EPDM Modified with Plasma

Authors

  • Renata Patrícia Santos Instituto Tecnológico de Aeronáutica/São José dos Campos/SP
  • Mauro Santos de Oliveira Junior Instituto Tecnológico de Aeronáutica/São José dos Campos/SP
  • Elizabeth da Costa Mattos Instituto de Aeronáutica e Espaço/São José dos Campos/SP
  • Milton Faria Diniz Instituto de Aeronáutica e Espaço/São José dos Campos/SP
  • Rita de Cássia Lazzarini Dutra Instituto de Aeronáutica e Espaço/São José dos Campos/SP

Keywords:

EPDM, plasma, surface characterization, UATR/FT-IR

Abstract

http://dx.doi.org/10.5028/jatm.v5i1.163

The surface of vulcanized ethylene propylene diene terpolymers (EPDM) was modified by Ar and N2, microwave generated plasma in order to improve adhesion properties. Surface modification was characterized by universal attenuated total reflectance Fourier Transform Infrared (UATR/FT-IR), because it presented lower interference of ingredients of EPDM formulation when compared with other techniques used for the attenuated total reflectance (ATR) to different crystals (ATR/KRS-5 and ATR/Ge). Oxygenated groups were introduced on the surface after treatments which were formed when the activated surface was exposed to the plasma gas. In treatments with nitrogen, oxygen groups and probable nitrogen groups were formed on the surface and could be identified by FT-IR. Reduction in the measurement of the contact angle and an increase in the work of adhesion and in the peel strength (EPDM X Polyurethane (PU)) were observed after the treatment resulted in the improvement of the adhesion properties of the modified surface.

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Published

2013-03-02

Issue

Section

Original Papers