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Synthesis and characterization of acetylene‐terminated polybenzoxazines based on polyaralkyl‐phenolic prepolymer
Author(s) -
Qi Huimin,
Pan Guangyan,
Zhuang Yuanqi,
Huang Farong,
Du Lei
Publication year - 2010
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21701
Subject(s) - materials science , prepolymer , thermogravimetric analysis , differential scanning calorimetry , fourier transform infrared spectroscopy , thermal stability , curing (chemistry) , glass transition , polymer chemistry , aniline , composite material , chemical engineering , polyurethane , organic chemistry , polymer , chemistry , physics , engineering , thermodynamics
Xylok polybenzoxazine with acetylene group terminals (XPBZAs) were synthesized by the Mannich‐like condensation of Xylok prepolymer, formaldehyde, aminophenylacetylene, and aniline, and their structures were characterized by Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance ( 1 H NMR). The curing behavior of XPBZAs was determined by differential scanning calorimetry and FTIR. Thermal behavior and dynamic mechanical properties of the cured XPBZAs were investigated using thermogravimetric analysis and dynamic mechanical analysis. The results showed glass transition temperature ( T g ), the thermal stability, and anaerobic char residue of cured XPBZAs increased as the content of acetylene groups increased. POLYM. ENG. SCI., 50:1751–1757, 2010. © 2010 Society of Plastics Engineers