Examining the Initiation of the Polymerization Mechanism and Network Development in Aromatic Polybenzoxazines.

ABSTRACT: Three bis-benzoxazine monomers based on the aniline derivatives of bisphenol A (BA-a), bisphenol F (BF-a), and 3,3'-thiodiphenol (BT-a) are examined using a variety of spectroscopic, chromatographic, and thermomechanical techniques. The effect on the polymerization of the monomers is compared using two common compounds, 3,3'-thiodiphenol (TDP) and 3,3'-thiodipropionic acid (TDA), at a variety of loadings. It is found that the diacid has a greater effect on reducing the onset of polymerization and increasing cross-link density and T_g for a given benzoxazine. However, the addition of >5 wt % of the diacid had a detrimental effect on the cross-link density, T_g, and thermal stability of the polymer. The kinetics of the polymerization of BA-a were found to be

SUBMITTER: Hamerton I 

PROVIDER: S-EPMC3707310 | biostudies-literature | 2013 Jul

REPOSITORIES: biostudies-literature