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PVA grafted POSS hybrid for high performance polyvinyl alcohol films with enhanced thermal, hydrophobic and mechanical properties
Author(s) -
Liu Di,
Yuan Li,
Xu Hongyue,
Tian Huafeng,
Xiang Aimin
Publication year - 2019
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.25084
Subject(s) - materials science , silsesquioxane , nanocomposite , thermal stability , vinyl alcohol , fourier transform infrared spectroscopy , composite material , polyvinyl alcohol , polymer , grafting , nanoparticle , chemical engineering , nanotechnology , engineering
As one kind of novel nanomaterial, polyhedral oligomeric silsesquioxane (POSS) can improve the thermal stability, water resistance, and mechanical properties of the composites when introduced into a polymer matrix. In this work, we carried a novel method to fabricate polymeric nanocomposite films from poly(vinyl alcohol) (PVA) by grafting octa(−chloropropyl) POSS using sodium hydroxide (NaOH) as a catalyst. Fourier transform infrared (FTIR) and 1 H nuclear magnetic resonance ( 1 H NMR) spectral analysis confirmed the structure of POSS‐graft‐PVA (POSS‐g‐PVA) nanoparticles. For the cast nanocomposite films, transmission electron microscopy (TEM) micrographs revealed that good POSS dispersion/distribution into PVA matrix was achieved, leading to substantial improvement of mechanical properties, reduced water absorption, and enhanced thermal stability. The chemical grafting of PVA on the nanoparticles plays an important role in improving these properties compared with conventional filled composites. POLYM. COMPOS., 40:2768–2776, 2019. © 2018 Society of Plastics Engineers