2011
DOI: 10.1038/pj.2011.79
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Exfoliated syndiotactic polystyrene-graft-poly(methyl methacrylate)/montmorillonite nanocomposite prepared by solvent blending

Abstract: This study aims to explore an effective route for the graft copolymerization of methyl methacrylate (MMA) monomer onto syndiotactic polystyrene (sPS) using free-radical polymerization, and the effects of an organophilic montmorillonite on the final properties of graft copolymer samples. For this purpose, the chlorine groups of a-phenyl-chloro-acetylated sPS were converted to 9-decen-1-oxy groups by a substitution nucleophilic reaction in the presence of a solvent composed of 9-decen-1-ol moiety, sodium hydride… Show more

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Cited by 24 publications
(26 citation statements)
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“…Recently, there has been considerable interest in polymer/layered silicate hybrids as nanocomposites due to their novel thermal, mechanical, optical and physicochemical properties, which are rarely present in the corresponding neat polymer or conventional (microscale) composites . The possibility of novel physical phenomena due to nanoscale confinement and an extraordinarily large interfacial area in well‐dispersed nanocomposites has provided additional motivation for study .…”
Section: Introductionmentioning
confidence: 99%
“…Recently, there has been considerable interest in polymer/layered silicate hybrids as nanocomposites due to their novel thermal, mechanical, optical and physicochemical properties, which are rarely present in the corresponding neat polymer or conventional (microscale) composites . The possibility of novel physical phenomena due to nanoscale confinement and an extraordinarily large interfacial area in well‐dispersed nanocomposites has provided additional motivation for study .…”
Section: Introductionmentioning
confidence: 99%
“…In the past few decades, 1 H NMR spectroscopic analysis has been established as a powerful tool for the determination of some parameters of polymer such as composition, degree of polymerization (DP n ), and number average molecular weight ( M n ). [ 41,42 ] The DP n and M n of the synthesized PHEMA and PHEMA- b -PVEA can be calculated from the 1 H NMR data through the following equations.…”
Section: Resultsmentioning
confidence: 99%
“…The FTIR spectrum of (PSt-co-PMSt) copolymer shows the characteristic absorption bands 26,27 due to stretching vibration of C-H (3100-2850 cm -1 ), weak aromatic overtone and combination bands in the 2100-1670 cm -1 region, C=C stretching vibrations (1606 and 1485 cm -1 ), CH 2 bending vibrations (1445 and 1372 cm -1 ) and γ(C-H) in the aromatic ring (768 and 709 cm -1 ). Compared with that of (PSt-co-PMSt), a new peak at 557 cm -1 attributed to C-Br group in the FTIR spectrum of the brominated copolymer was observed (Figure 2b).…”
Section: Resultsmentioning
confidence: 99%
“…26,27 Styrene, p-methylstyrene and aniline monomers were supplied by Merck (Darmstadt, Germany) and were distilled under reduced pressure from CaH 2 before use. Tetrahydrofuran (THF) from Merck was dried by refluxing over sodium and distilled under argon prior to use.…”
Section: Methodsmentioning
confidence: 99%
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