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Poly(urethane-co-benzoxazine)s via Reaction of Phenol Terminated Urethane Prepolymers and Benzoxazine Monomer and Investigation of Their Properties by Sadegh Jamshidi; Hamid Yeganeh; Shahram Mehdipour-Ataei is a Materials Science article available to read on EtoBox.

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## Abstract In the present work, a new method was developed for the combination of polyurethanes (PUs) and polybenzoxazine (PBz) to obtain novel thermoset poly(urethane‐co‐benzoxazine)s with good thermal, mechanical, and electrical properties as well as low temperature curing profile. Knowing the catalytic effect of compounds possessing free phenolic groups on ring opening polymerization of benzoxazine monomers, preparation of phenol terminated urethane oligomers (PTPU) as the macroinitiator for a benzoxazine monomer (Ba) was considered. Firstly, NCO‐terminated urethane prepolymers were prepared from the reaction of poly(tetramethyleneether glycol), and 2,4‐tolylene diisocyanate, and then end functionalized with bisphenol‐A under proper condition. DSC, DMTA, and gel content measurements were applied to find optimum ring opening polymerization condition (170°C for 1 hr and 200°C for 15 min). Various kinds of thermoset polymers were prepared by the reaction of PTPU at different molecular weights with variable contents of Ba. All of monomeric and polymeric materials were characterized by conventional spectroscopic methods and their thermal, mechanical, viscoelastic, and electrical pro

Who reads Poly(urethane-co-benzoxazine)s via Reaction of Phenol Terminated Urethane Prepolymers and Benzoxazine Monomer and Investigation of Their Properties?

Author

Sadegh Jamshidi; Hamid Yeganeh; Shahram Mehdipour-Ataei

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1042-7147)

Published

2011

Language

EN

Field

Materials Science (Physical Sciences)