Chemiluminescence imaging was successfully carried out for some polymer materials under heating or mechanical stress using a two-dimensional photoelectron detector. Oxidative degradation could be visualized for the press-moulded sheets of Nylon 6 (Ny6) and polystyrene (PS), and for the multilayered sheet composed of polyethylene (PE) and styrene-butadiene triblock copolymer (SBS) by heating samples at 50-154°C in air. The chemiluminescence intensity varied over the surface of the sample specimen; the surface trimmed with a razor blade and the cracked portion exhibited especially strong luminescence for Ny6 and PS samples. The difference in the oxidation reaction rate between the two kinds of materials could be visualized clearly for the multilayered sheet of PE and SBS. Stress-induced luminescence was observed on drawing Ny6 at room temperature, and it was found that the luminescence was remarkably strong around the stress-concentrated part of the specimen.
Посилання на статтю:
Chemiluminescence imaging of polymer materials under thermal oxidation and stress / Satoru Hosoda*, Yoshinori Seki and Hayato Kihara // Polymer. – 1993. – Vol 34. – P. 4602-4606.