Phosphonium modified organoclay as potential nanofiller for the development of exfoliated and optically transparent polycarbonate/clay nanocomposites: Preparation and characterizations

Suin, Supratim; Shrivastava, Nilesh K.; Maiti, Suman; Khatua, Bhanu Bhusan

doi:10.1016/j.eurpolymj.2012.10.004

Cited by 31 publications

(24 citation statements)

References 57 publications

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“…Suin et al [31] and Lim and Chow [33] also determined similar results on the decreasing in transmittance by loading organoclay. Reflectance values may be used in determination of the refractive index, n(λ), by following formula [48,49]:…”

Section: Figsupporting

confidence: 76%

“…In particular, these studies focus on the determination of optical transparency of nanocomposites by loading organoclay. Suin et al [31] reported the preparation and properties of optically transparent polycarbonate (PC)/clay nanocomposites through the conventional methods of nanocomposites. They found that a very nominal change in percent transmittance occurred on incorporating organoclay into the PC matrix.…”

Section: Introductionmentioning

confidence: 99%

“…In the study of physical properties of polymers, optical absorption spectrum is one of the most important tool for understanding band structure, electronic properties, and optical constants (refractive and absorption indices) of pure and composite polymers [30]. Recently, some authors have investigated the some optical properties of polymer/clay nanocomposites [31][32][33][34][35]. In particular, these studies focus on the determination of optical transparency of nanocomposites by loading organoclay.…”

Section: Introductionmentioning

confidence: 99%

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Optical Properties of Poly(2-(5-bromo benzofuran-2-yl)-2-oxoethyl methacrylate)/Organoclay Nanocomposites

Kurt

Koca

2015

Arab J Sci Eng

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Novel nanocomposites of benzofuran-containing polymer poly(2-(5-bromo benzofuran-2-yl)-2-oxoethyl methacrylate) with different contents of organoclay were prepared and characterized with FTIR, XRD and SEM techniques. The thermal decomposition temperature of poly (BOEMA)/organoclay nanocomposites is higher than that of pure poly(BOEMA) about 5-14 • C at 10 % weight loss. The optical characterization was tested with a UV-VIS spectrophotometer. Transmittances of nanocomposites decreased to lower values by organoclay loading. Dispersion parameters such as steepness parameter, single-oscillator parameter, average oscillator position and strength, and moments of the imaginary part of the optical spectrum were changed as a function of organoclay nanofiller. As the organoclay content increased to 5 % in the polymer matrix, the existence of wide-band tails increased to 1.30 eV whereas the optical energy gap decreased to 2.92 eV. Analysis reveals that the type of transition is the indirectly allowed one.

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Section: Figsupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optical Properties of Poly(2-(5-bromo benzofuran-2-yl)-2-oxoethyl methacrylate)/Organoclay Nanocomposites

Kurt

Koca

2015

Arab J Sci Eng

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“…In this study, the sodium montmorillonite was organically modified by a cation exchange reaction with an alkyl phosphonium salt [32,33], resulting in a hexadecyl phosphonium modified montmorillonite (H-OMMT). Hexadecyltrimethoxysilane was chosen as a long-alkyl-chain silane coupling agent to apply an additional surface treatment on the H-OMMT, resulting in W-H-OMMT.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a long-alkyl-chain silane grafted organic montmorillonite and its nanocomposite with SEBS

Zhou

Shi

et al. 2016

Polym. Bull.

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In this study, a modified montmorillonite (W-H-OMMT) was prepared by intercalating pristine montmorillonite using a phosphorus salt and a subsequent grafting using a long-alkyl-chain silane, and the nanocomposites with poly[styrene-(ethylene-co-butylene)-styrene] (SEBS) were prepared by melt blending. The pristine and the modified MMT were characterized by XRD, FT-IR, XPS and SEM. The morphology of the SEBS nanocomposites was studied using XRD, SEM and TEM, and the results can be correlated well with transparency, color, surface contact angle, rheological behavior, thermal and mechanical properties of the nanocomposites. As compared with pristine and the modified clay, more uniform dispersion and improved compatibility are observed for the W-H-OMMT in the SEBS matrix, resulting in better transparency and more hydrophobic surface for the SEBS/W-H-OMMT nanocomposite. Better thermal stability, a synergetic effect in tensile strength and elongation at break were observed, which can be attributed to well dispersion of the W-H-OMMT, as well as perfect adhesion between the W-H-OMMT and the SEBS matrix from the enhanced molecular interaction between the long-alkyl chain and the SEBS molecules. Compared to pure SEBS, the strength and elongation of SEBS/W-H-OMMT nanocomposite increased by 8.5 and 7.6 %; meanwhile, the water contact angel and the 50 % weight loss temperature increased by 5.3 and 13.1 %, respectively. Appropriate silane grafted organic montmorillonite provided an efficient way for the overall performance improvement of SEBS.

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“…Modification of clay was performed according to [12]. The clay was dispersed in 100 mL distilled water at 80 o C and stirred for 1h.…”

Section: Modification Of the Claymentioning

confidence: 99%

Phosphonium modified clay/polyimide nanocomposites

Ceylan

Çakmakçı²,

Beyler‐Çiğil³

et al. 2014

IOP Conf. Ser.: Mater. Sci. Eng.

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Phosphonium modified organoclay as potential nanofiller for the development of exfoliated and optically transparent polycarbonate/clay nanocomposites: Preparation and characterizations

Cited by 31 publications

References 57 publications

Optical Properties of Poly(2-(5-bromo benzofuran-2-yl)-2-oxoethyl methacrylate)/Organoclay Nanocomposites

Optical Properties of Poly(2-(5-bromo benzofuran-2-yl)-2-oxoethyl methacrylate)/Organoclay Nanocomposites

Preparation of a long-alkyl-chain silane grafted organic montmorillonite and its nanocomposite with SEBS

Phosphonium modified clay/polyimide nanocomposites

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