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Reactive particles from in situ silane‐polycondensation‐induced self‐assembly of poly(styrene‐ alt ‐maleic anhydride) as toughener for epoxy resins
Author(s) -
Wei Wei,
Cui Yuqing,
Li Xiaojie,
Gu Yao,
Fei Xiaoma,
Luo Jing,
Liu Xiaoya
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.47565
Subject(s) - materials science , thermosetting polymer , epoxy , maleic anhydride , thermal stability , composite material , bisphenol a , styrene , silane , polymer chemistry , glass transition , ultimate tensile strength , copolymer , polymer , chemistry , organic chemistry
The partial aminolysis of poly(styrene‐ alt ‐maleic anhydride) (SMA) with 3‐aminopropyltriethoxysilane (APTES) was carried out followed by in situ hydrolytic condensation of the silane, for inducing the self‐assembly of SMA to prepare an organic–inorganic hybrid colloidal particle (SMA‐APTES). The obtained SMA‐APTES particles were then employed as a toughener for modifying diglycidylether of bisphenol A/anhydride thermoset. When the additive amount of the modifier was 5 wt %, an optimal overall performance was achieved. Compared to neat epoxy thermoset, the tensile strength, elongation‐ at‐break, impact strength, and fracture toughness were increased by 67.6, 159, 170.5, and 230.9%, respectively. Although SMA‐APTES particles inherently had low glass‐transition temperature ( T g ) and thermal stability, the T g and thermal stability of above case were comparable to that of neat epoxy resin. It was contributed by the remarkable increase in the crosslink density offsetting this shortage. Therefore, SMA‐APTES particle was proved to be an effective and promising modifier for epoxy thermoset. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47565.