Journal
POLYMER
Volume 51, Issue 24, Pages 5688-5694Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2010.08.059
Keywords
Main chain benzoxazine oligomers; Reactive diluent; Resin transfer molding
Categories
Funding
- Hexion Specialty Chemicals
- Chinese Scholorship Council (CSC)
- Case School of Engineering Case Western Reserve University
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A new approach has been developed to enhance the processability of main-chain benzoxazine polymers by synthesizing benzoxazine main-chain oligomers that are low in viscosity while maintaining the major part of the advantages of main-chain type polybenzoxazines A series of main-chain benzoxazine oligomers have been synthesized using bisphenol-F isomers The structure of the oligomers has been characterized by nuclear magnetic resonance spectroscopy (NMR) and Fourier transform infrared spectroscopy (FT-IR) The molecular weight has been evaluated using size exclusion chromatography (SEC) For a viscosity study a mixture of benzoxazine monomers derived from the same bisphenol-F isomers has been used as control and a reactive diluent to control the viscosity (C) 2010 Elsevier Ltd All rights reserved
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