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Improvement of polyamide 1010 with silica nanospheres via in situ melt polycondensation
Author(s) -
Yan Manqing,
Yang Hongjun
Publication year - 2012
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.22318
Subject(s) - materials science , polyamide , crystallinity , differential scanning calorimetry , fourier transform infrared spectroscopy , dynamic mechanical analysis , nanocomposite , thermogravimetric analysis , x ray photoelectron spectroscopy , glass transition , composite material , condensation polymer , polymer , chemical engineering , polymer chemistry , physics , engineering , thermodynamics
Polyamide 1010 (PA1010) had been prepared by in situ melt polycondensation in presence of silica nanospheres with amine groups on the surfaces (SiO 2 NH 2 ). Fourier transform infrared spectroscopy (FTIR), X‐ray photoelectron spectroscopy (XPS), and thermal gravimetric analysis (TGA) measurements demonstrated that the nanosphere surface was grafted with PA1010 chains. Wide angle X‐ray diffraction (WAXD) and differential scanning calorimetry (DSC) measurements showed that the PA1010/SiO 2 NH 2 nanocomposites had a lower degree of crystallinity (χ c ) in comparison with PA1010 and PA1010/SiO 2 nanocomposites. Dynamic mechanical analysis (DMA) indicated that SiO 2 NH 2 nanospheres improved glass transition temperature ( T g ), tensile strength and storage modulus of PA1010 since SiO 2 –NH 2 nanospheres limited the mobility of PA1010 chains. POLYM. COMPOS., 2012. © 2012 Society of Plastics Engineers