Synthesis and characterization of resol-layered silicate nanocomposites

Polystyrene–polybutadiene block copolymers having different molecular architectures were epoxidized by using meta-chloroperoxybenzoic acid (MCPBA). Then, the blends with epoxy resin (diglycidyl ether of bisphenol-A; DGEBA) and their nanocomposites with boehmite and layered silicate nanofiller in presence of methylene dianiline (MDA) as a hardener were prepared. The epoxidized copolymers and the composites were characterized by Fourier transform infrared (FTIR) spectroscopy and microindentation technique. In this way, it was possible to tune the morphology of the nanostructured blends of the epoxy resin using the functionalized block copolymer as the template. The presence of nanostructured morphology was attested by the optical transparency of the blends as well as of the composites with nanofiller. The microhardness properties were improved by the incorporation of the nanoparticles, viz. boehmite and layered silicate. Nepal Journal of Science and Technology Vol. 13, No. 1 (2012) 81-88 DOI: http://dx.doi.org/10.3126/njst.v13i1.7445

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Synthesis and characterization of a (Zn, Ti)-substituted layered silicate

Journal of Materials Chemistry ◽

10.1039/jm9950500557 ◽

1995 ◽

Vol 5 (4) ◽

pp. 557 ◽

Cited By ~ 11

Author(s):

Vittorio Luca ◽

Dugald. J. MacLachlan ◽

Russell F. Howe ◽

R. Bramley

Keyword(s):

Layered Silicate ◽

Synthesis And Characterization

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Synthesis and Characterization of Layered Silicate-Epoxy Nanocomposites

Chemistry of Materials ◽

10.1021/cm00046a026 ◽

1994 ◽

Vol 6 (10) ◽

pp. 1719-1725 ◽

Cited By ~ 846

Author(s):

Phillip B. Messersmith ◽

Emmanuel P. Giannelis

Keyword(s):

Layered Silicate ◽

Synthesis And Characterization ◽

Epoxy Nanocomposites

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Preparation and Characterization of Activated Sericite Modified by Fluorosilicate

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.427.70 ◽

2012 ◽

Vol 427 ◽

pp. 70-76

Author(s):

Xia Xu ◽

Hao Ding ◽

Yue Bo Wang ◽

Yu Liang ◽

Wei Jiang

Keyword(s):

Structural Modification ◽

Layered Silicate ◽

Xrd Analysis ◽

Processing Conditions ◽

X Ray Diffraction ◽

X Ray ◽

Optimal Processing ◽

Silicate Nanocomposites ◽

Sodium Fluosilicate

The structure of sericite is stable, and it is hard to prepare polymer layered silicate nanocomposites (PLSN). Therefore, structural modification was employed to activate sericite to reduce the layer charger. The thermal treated sericite (S1) was prepared by thermal modification at 800 for one hour. Then, the resulting product was modified with sodium fluorosilicate, whose effect was characterized by X-ray diffraction (XRD) analysis. The dissolving-out amount of Al3+ of salt-treated product (S2) reached circa 2.55 mg/g at the optimal processing conditions. CEC of S2 was increased to 10.52 meq/100g compared with that of original sericite (4.94 meq/100g). The results of XRD analysis indicated that mica-type phase persisted after salt modification with sodium fluosilicate.

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