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Reinforced properties of polybenzoxazine‐based nanocomposites with siloxane benzoxazine‐modified halloysite nanotubes
Author(s) -
Li Jing,
Shen Zhiqiang,
Li Huanxin,
Xu Li,
Song Huaijun,
Guan Gang,
Liu Guoji
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.47882
Subject(s) - halloysite , materials science , thermogravimetric analysis , nanocomposite , differential scanning calorimetry , thermal stability , copolymer , siloxane , monomer , polymer chemistry , polysulfone , chemical engineering , composite material , polymer , physics , engineering , thermodynamics
ABSTRACT Siloxane benzoxazine monomer (Ba‐s) was synthesized using phenol, 3‐aminopropyltriethoxysilane (KH‐550) , and paraformaldehyde, and then introduced onto halloysite nanotubes (HNTs) surface as a coupling agent to obtain functionalized HNTs (mHNTs). 1, 6‐hexanediamine/phenol benzoxazine (Ba‐h) was selected as a matrix to blend with mHNTs at the mass ratios of 1:0, 9:1, 7:1, 6:1, 4:1,7:3, and 3:2, respectively. The ring‐opening copolymerization behaviors of the nanocomposites were investigated by differential scanning calorimetry. The results implied that the polymerization temperature of Ba‐h was decreased by the grafted HNTs. The results of thermogravimetric analysis and dynamic mechanical analysis displayed that the obtained copolymers exhibit different degrees of improvement in the thermal stability and mechanical properties of Ba‐h. These enhancements are attributed to the homogeneous dispersion of HNTs and the strong matrix‐nanoparticle interactions based on SEM and TEM results. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47882.