Organic modification of montmorillonite with low molecular weight polyethylene glycols and its use in polyurethane nanocomposite foams

Sarıer, Nihal; Önder, Emel

doi:10.1016/j.tca.2010.07.004

Cited by 59 publications

(41 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Further, this increase of interlayer gallery width is almost independent of PEG molecular weight and also the preparation methods of the nanocomposites . Analogous to these results, the recent XRD study on three different molecular weight PEGs (PEG600, PEG1000, and PEG1500) based nanocomposites also reveals the formation of MMT intercalated structures. The intercalation of these polymers changes the MMT gallery width up to 1.7 nm, and this value is less affected by the PEG molecular weight.…”

Section: Resultssupporting

confidence: 57%

“…The outcomes of various studies on these materials have established that the dispersion of MMT in the PVA, PVP, PEO, and PEG matrices improves their mechanical, thermal, gas permeable and dielectric/electrical properties. The research work on the PVA blends with PVP, PEO, and PEG also confirms the enhancement in their technological and industrial important physicochemical properties as compared with the individual polymer. These improved properties of the polymers blends depend on the miscibility and the heteromolecular interaction compatibility generated between the functional groups of the polymers.…”

Section: Introductionsupporting

confidence: 58%

“…The d 001 and W cg values, recorded in Table , confirm that the intercalated structures of PVA− x wt % MMT nanocomposites expand the 001 basal plane spacing of MMT comparable to that of the double layers accommodated PEG− x wt % MMT nanocomposites . Therefore, the study of the nanocomposites based on the PVA−PEG blend dispersed with MMT nanofiller has an importance in regards to confirmation of this polymer blend on the crystallization behavior and in the enhancement of their pharmaceutical and technological applications …”

Section: Resultsmentioning

confidence: 62%

See 2 more Smart Citations

Structural characterization of hydrophilic polymer blends/montmorillonite clay nanocomposites

Sengwa

Choudhary

2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

The nanocomposite films comprising polymer blends of poly(vinyl alcohol) (PVA), poly(vinyl pyrrolidone) (PVP), poly(ethylene oxide) (PEO), and poly(ethylene glycol) (PEG) with montmorillonite (MMT) clay as nanofiller were prepared by aqueous solution casting method. The X‐ray diffraction studies of the PVA–x wt % MMT, (PVA–PVP)–x wt % MMT, (PVA–PEO)–x wt % MMT and (PVA–PEG)–x wt % MMT nanocomposites containing MMT concentrations x = 1, 2, 3, 5 and 10 wt % of the polymer weight were carried out in the angular range (2θ) of 3.8–30°. The values of MMT basal spacing d001, expansion of clay gallery width Wcg, d‐spacing of polymer spherulite, crystallite size L and diffraction peak intensity I were determined for these nanocomposites. The values of structural parameters reveal that the linear chain PEO and PEG in the PVA blend based nanocomposites promote the amount of MMT intercalated structures, and these structures are found relatively higher for the (PVA–PEO)–x wt % MMT nanocomposites. It is observed that the presence of bulky ester‐side group in PVP backbone restricts its intercalation, whereas the adsorption behavior of PVP on the MMT nanosheets mainly results the MMT exfoliated structures in the (PVA–PVP)–x wt % MMT nanocomposites. The crystallinities of the PEO and PEG were found low due to their blending with PVA, which further decreased anomalously with the increase of MMT concentration in the nanocomposites. The decrease of polymer crystalline phase of these materials confirmed their suitability in preparation of novel solid polymer nanocomposite electrolytes. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40617.

show abstract

Section: Resultssupporting

confidence: 57%

Section: Introductionsupporting

confidence: 58%

Section: Resultsmentioning

confidence: 62%

See 1 more Smart Citation

Structural characterization of hydrophilic polymer blends/montmorillonite clay nanocomposites

Sengwa

Choudhary

2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Compared with the XRD pattern of the feldspar, the pattern of feldspar/TiO 2 /CTS showed some changes between 2θ values of 18.00 and 40.00°; this suggested the intercalation of feldspar. Moreover, the significant intensity decreased, and slight shifts at 2θ = 21, 23, 26.66, and 35.34°, observed as broadenings in the hybrid pattern, were attributable to delamination and disorientation of the mineral platelets …”

Section: Resultsmentioning

confidence: 95%

Feldspar/titanium dioxide/chitosan as a biophotocatalyst hybrid for the removal of organic dyes from aquatic phases

Yazdani

Bahrami

Arami

2013

J of Applied Polymer Sci

View full text Add to dashboard Cite

Feldspar/titanium dioxide/chitosan hybrid, a photoactive biocompatible adsorbent for anionic dyes, was synthesized, characterized, and successfully tested. The adsorbent characterization, pH role, adsorbent dose effect, equilibrium data, kinetic plats, and thermodynamic parameters are reported. The point of zero charge for the hybrid was measured to be 8.3, and the most favorable pH range for the adsorption process was found to be below this pH value. The adsorption equilibrium study demonstrated that the Freundlich model was best fitted to the experimental data. Without UV light exposure, the prepared adsorbent adsorbed 72 mg of Acid Black 1 (AB1)/g of sorbent (86% removal) from a 100-mL solution with an initial dye concentration of 50 mg/L, whereas UV irradiation resulted in an increase in the elimination of AB1 dye (97% removal). The kinetic data was depicted well by the pseudosecond-order model. The thermodynamic parameters indicated that the reaction between the hybrid and the dye was exothermic and also spontaneous at lower temperatures. In the batch desorption process, several aqueous solutions adjusted to different pH values were tested, and the best desorption performance (90% desorption) was achieved at pH 11. V C 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40247.

show abstract

“…The mechanical properties of the product are tested and its structure is characterized by using XRD, FT-IR, TG-DTA and SEM. Moreover, the different percentages of fillers, interface agents, coupling agents and lotion are studied in the experiment, which reveals the application performance and preparation mechanism [9,10].…”

Section: Introductionmentioning

confidence: 99%

Study on Recycled Polystyrene Plastic/SiOa#8322 Melting Blending Modified Nanocomposites

Chen¹,

Dao-hua²,

Shao-fen³

et al. 2017

Proceedings of the 2017 6th International Conference on Energy and Environmental Protection (ICEEP 2017)

View full text Add to dashboard Cite

Abstract. The addition of nano-SiO 2 to 20% silane coupling agent is carried out using anhydrous ethanol as the solvent in the presence of acetic acid. The styrene-butadiene-styrene (SBS) is added with 1% dicumyl peroxide crosslinking agent by adding 5% maleic anhydride grafted polyethylene to be modified on an extruder. Polystyrene/nano-SiO 2 composites are prepared by blending nano-SiO 2 and SBS in different proportions with waste polystyrene. Three mechanical properties of the newly prepared materials are tested, including the tensile strength, impact strength, and flexural strength. The results show that the composite properties of polystyrene/nano-SiO 2 composites containing 8% nano-SiO 2 are the best. The microstructures and physicochemical structures of the composites were further studied by means of infrared spectroscopy (FT-IR), X ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric-differential thermal analysis (TG-DTA). The results reveal that the tensile, impact and bending properties of 8% nano-SiO 2 composites are improved best, and at the same time, the proportion of the prepared composite structure is stable. The preparation method of the composite material is simple and easy to operate, and has certain industrial application prospect.

show abstract

Organic modification of montmorillonite with low molecular weight polyethylene glycols and its use in polyurethane nanocomposite foams

Cited by 59 publications

References 51 publications

Structural characterization of hydrophilic polymer blends/montmorillonite clay nanocomposites

Structural characterization of hydrophilic polymer blends/montmorillonite clay nanocomposites

Feldspar/titanium dioxide/chitosan as a biophotocatalyst hybrid for the removal of organic dyes from aquatic phases

Study on Recycled Polystyrene Plastic/SiOa#8322 Melting Blending Modified Nanocomposites

Contact Info

Product

Resources

About