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Fabrication of poly(vinyl alcohol) nanocomposites having different contents of modified SiO 2 by vitamin B 1 as biosafe and novel coupling agent to improve mechanical and thermal properties
Author(s) -
Mallakpour Shadpour,
Khani Zahra
Publication year - 2018
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.24517
Subject(s) - vinyl alcohol , materials science , nanocomposite , contact angle , composite material , ultimate tensile strength , fabrication , fourier transform infrared spectroscopy , nanoparticle , chemical engineering , polymer , nanotechnology , medicine , alternative medicine , pathology , engineering
In this study, at first, owing to the excessive surface energy and inclination for aggregation, surface treatment of silica (SiO 2 ) nanoparticles (NP)s was performed by vitamin B 1 (VB 1 ) as a biodegradable and biocompatible coupling agent. The divergent extent of modified SiO 2 (SiO 2 ‐VB 1 ) was incorporated into poly(vinyl alcohol) (PVA) matrix and PVA/SiO 2 ‐VB 1 nanocomposites (NC)s were prepared. TGA analysis showed that the insertion of SiO 2 ‐VB 1 into the PVA improved its thermal resistance. Microscopic observations showed that SiO 2 ‐VB 1 was in average size about 24 nm and was homogeneously dispersed in the PVA matrix. As reported by UV‐Vis spectra, the absorption was raised by increasing the percentage of SiO 2 NPs . Water contact angle analysis indicated that the obtained NCs showed more hydrophilicity property than the neat PVA. Also, a mechanical tensile test of the NCs showed more flexibility than that of the pure PVA. POLYM. COMPOS., 39:E1589–E1597, 2018. © 2017 Society of Plastics Engineers