Abstract
A new positive-type photosensitive polyimide containing simultaneously N-carbonyloxyimide groups and cyclobutane rings in the main chain was prepared, and its photodegradation behavior was investigated by FT-IR, 1H NMR, and GC-MS spectroscopy. The polyimide underwent a photo-induced decomposition through the cleavage of N-O bond as well as cyclobutane ring, affording maleimide as a photoproduct. The polyimide exhibited enhanced photosensitivity compared to conventional cyclobutane-containing polyimides.
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