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Synthesis of nanosilica‐based immobile antioxidant and its antioxidative efficiency in SBR composites
Author(s) -
Guo Lili,
Lei Hangxin,
Zheng Jing,
Huang Guangsu,
Li Guangxian
Publication year - 2013
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22591
Subject(s) - materials science , fourier transform infrared spectroscopy , scanning electron microscope , composite material , thermal stability , silane , degradation (telecommunications) , dispersion (optics) , chemical engineering , telecommunications , physics , optics , computer science , engineering
Nanosilica was successfully grafted with antioxidant intermediate p ‐aminodiphenylamine (RT) via silane coupling agent 3‐glycidoxypropyltrimethoxysilane (KH‐560), and the structures of product RT‐silica were confirmed by Fourier transform infrared spectra (FTIR) and other methods. RT‐silica exhibited excellent performance in many aspects. Scanning electron microscopy (SEM) observation shows that the RT‐silica has a better dispersion state and compatibility with the SBR matrix. The tests of oxidation induction time (OIT) have revealed that RT‐silica possesses better antioxidative and antimigratory efficiency than that of the corresponding low molecular counterpart. Degradation activation energy ( E α ) of SBR composites were evaluated by the Kissinger–Akahira–Sunose (KAS) method and the results showed that SBR composites with RT‐silica have better thermal stability properties. POLYM. COMPOS., 34:1856–1862, 2013. © 2013 Society of Plastics Engineers