Post-Modification of Polybutadienes by Photoinduced Hydrogen Abstraction from Benzoxazines and Their Thermally Activated Curing

Arslan M., Kışkan B., YAGCI Y.

MACROMOLECULES, vol.49, no.14, pp.5026-5032, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 49 Issue: 14
  • Publication Date: 2016
  • Doi Number: 10.1021/acs.macromol.6b01329
  • Journal Name: MACROMOLECULES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.5026-5032
  • Istanbul Technical University Affiliated: Yes


Side-chain benzoxazine functional polybutadienes was synthesized by photoinduced hydrogen abstraction process. First, photoactive benzoxazines having both chromophoric carbonyl and hydrogen donating sites were synthesized using vanillin or 4-hydroxybenzophenone by conventional benzoxazine synthesis methodology. Irradiation of neat polybutadiene (PB) in the presence of the corresponding benzoxazines, namely benzophenone benzoxazine (BPh-ptol) and vanillin benzoxazine (Van-a) under 300-350 nm light, gave PBs with approximately 4-5 benioxazine units per chain. Successful modification was confirmed by the spectral and thermal investigations. It is demonstrated that PBs attached with benzoxazines undergo thermally activated curing without any catalyst to form polybutadiene thermoset with high char yield.