Optical properties of poly(methyl methacrylate)–titania nanostructure thin films containing ellipsoid-shaped titania nanoparticles from ex-situ sol-gel method at low growth temperature

Sun, Xiaofeng; Chen, X.; Liu, X.; Qu, S.

doi:10.1007/s00340-010-4265-6

Cited by 17 publications

(7 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is possible that the nanoparticles also interacted with the volatile decompo- sition products and in the process retarded its diffusion out of the sample. From the TGA curves of PMMA and PMMA-zirconia (5!wt%) at heating rates of 3, 5, 7 and 9°C min -1 the isoconversional graphs of ln " versus 1/T according to Equation (1) were plotted, and of ln ("/T 2 ) versus 1/T according to Equation (2). The activation energy values were calculated from the slopes of the isoconversional plots.…”

Section: Resultsmentioning

confidence: 99%

“…Nanocomposite materials, based on a polymer matrix and inorganic nanoparticle fillers, have drawn considerable attention in recent years, due to improvements in various properties including electrical, thermal, optical and other mechanical properties [1][2][3][4][5]. Poly(methyl methacrylate)/zirconia (PMMA-ZrO 2 ) is one of the most important nanocomposites that has been applied for the increasing demands of optical waveguides, ophthalmic lenses, antireflection coatings and adhesives for optical components.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Morphology, mechanical properties and thermal degradation kinetics of PMMA-zirconia nanocomposites prepared by melt compounding

Motaung¹,

Luyt

Saladino³

et al. 2012

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. Zirconia nanoparticles were synthesized by means of a sol-gel method and embedded in poly(methyl methacrylate) (PMMA) by melt compounding. The zirconia was well dispersed in the PMMA matrix, with only a few clusters, especially for the highest investigated zirconia content. NMR results showed heteronuclear dipolar interactions involving the carbons and the surrounding hydrogen nuclei. The effect of the amount of zirconia, in the range of 1-5!wt%, on the thermomechanical properties and thermal degradation kinetics of PMMA was also investigated by means of dynamic mechanical analysis (DMA), thermogravimetric analyses (TGA), and Fourier-transform infrared spectroscopy (FTIR). The presence of zirconia showed a decrease in the storage and loss moduli at lower temperatures, probably due to a plasticization effect. The presence of zirconia in PMMA slightly increased its thermal stability, but the activation energies of thermal degradation for the nanocomposites were significantly lower, at degrees of conversion higher than 0.3, than those of pure PMMA.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Morphology, mechanical properties and thermal degradation kinetics of PMMA-zirconia nanocomposites prepared by melt compounding

Motaung¹,

Luyt

Saladino³

et al. 2012

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

“…PMMA also has attracted high attention for optical applications. This is because it has excellent transparency [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Influence of Doping Concentration on Dielectric, Optical, and Morphological Properties of PMMA Thin Films

Ismail

Zulkefle

Herman

et al. 2012

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

PMMA thin films were deposited by sol gel spin coating method on ITO substrates. Toluene was used as the solvent to dissolve the PMMA powder. The PMMA concentration was varied from 30 ~ 120 mg. The dielectric properties were measured at frequency of 0 ~ 100 kHz. The dielectric permittivity was in the range of 7.3 to 7.5 which decreased as the PMMA concentration increased. The dielectric loss is in the range of 0.01 ~ –0.01. All samples show dielectric characteristics which have dielectric loss is less than 0.05. The optical properties for thin films were measured at room temperature across 200 ~ 1000 nm wavelength region. All samples are highly transparent. The energy band gaps are in the range of 3.6 eV to 3.9 eV when the PMMA concentration increased. The morphologies of the samples show that all samples are uniform and the surface roughness increased as the concentration increased. From this study, it is known that, the dielectric, optical, and morphology properties were influenced by the amount of PMMA concentration in the solution.

show abstract

“…Its melting point it 160 o C. Also, Polymethylmethacrylate is one of the most versatile polymeric materials that are well suited for many applications in micro electric and electro-optics areas. This polymer offers low costs, process ability, possibility of functionalization, and are semiconductor nanoparticles, which simultaneously show a size-dependent band gap shift, high carrier mobility, and nonlinear optical properties [1][2][3][4][5]. Fillers are used in polymeric dielectric materials for improving specific electrical and other properties, or for controlling costs.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Thermal Dielectric Characterization for New PMMA Nanocomposites

Thabet¹

2014

ijeei

View full text Add to dashboard Cite

Nanostructured materials are attracting interests and applications, thus; physical and electrical properties of Polymethylmethacrylate (PMMA) nanocomposite materials under various thermal conditions are currently being studied. The dielectric behavior of new nanocomposite materials of Polymethylmethacrylate filled with nanoclay or nano-fumed silica has been measured at various frequency (0.1 kHz-1 kHz) and temperatures (20°C-60°C). Dielectric spectroscopy has been used to characterize ionic conduction and state the effect of filler concentration on the dielectric permittivity and dielectric losses, therefore; the relative permittivity and the loss tangent are measured by dielectric spectroscopy for Polymethylmethacrylate with and without nanofillers. Finally, it has been compared between dielectric properties of new Polymethylmethacrylate nanocomposites which prepared by adding nanofillers of clay or fumed silica with different concentrations under various temperatures.

show abstract

Optical properties of poly(methyl methacrylate)–titania nanostructure thin films containing ellipsoid-shaped titania nanoparticles from ex-situ sol-gel method at low growth temperature

Cited by 17 publications

References 30 publications

Morphology, mechanical properties and thermal degradation kinetics of PMMA-zirconia nanocomposites prepared by melt compounding

Morphology, mechanical properties and thermal degradation kinetics of PMMA-zirconia nanocomposites prepared by melt compounding

Influence of Doping Concentration on Dielectric, Optical, and Morphological Properties of PMMA Thin Films

Experimental Investigation on Thermal Dielectric Characterization for New PMMA Nanocomposites

Contact Info

Product

Resources

About