Transparent Nanocomposites of High Refractive Index Based on Epoxy Resin and TiO&lt;SUB&gt;2&lt;/SUB&gt; Nanoparticle

Nguyen, Dinh Huong; Kim, Han Na; Lee, Dai Soo

doi:10.1166/jnn.2012.5928

Cited by 4 publications

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“…USW) shown a less yellowness index than the control film. However, when exposed to UV radiation, it was observed that TiO 2 particles dispersed with ultrasound caused a slight increase in the yellowness index [ 41 ].…”

Section: Resultsmentioning

confidence: 99%

Pigmentation and Degradative Activity of TiO2 on Polyethylene Films Using Masterbatches Fabricated Using Variable-Frequency Ultrasound-Assisted Melt-Extrusion

et al. 2020

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Ultrasound-assisted melt-extrusion method (USME) is a high-quality process used to produce polymeric compounds with an adequate homogeneous dispersion. This study evaluates white-color films of linear low-density polyethylene (LLDPE) prepared using TiO2 masterbatch obtained by ultrasound-assisted melt-extrusion at variable frequencies (USME-VF). LLDPE with three different melt-flow indices (2, 20 and 50 g/10 min) were used as the polymer matrix. The films were obtained from the dilution of masterbatches of LLDPE (melt-flow index = 2) at a concentration of 7 wt% TiO2. The morphology, pigmentation, TiO2 reactivity, and the mechanical stability of the films were assessed. The masterbatch compounds were evaluated by melt-flow index (MFI) and scanning electron microscopy (SEM). The contrast ratio, yellowness index and mechanical properties of films were also measured. The properties of whiteness and elongation at break improved in the films prepared using masterbatches with higher dispersion. Though the reactivity of the TiO2 particles increased during accelerated aging, it did not affect the elongation to rupture. The yellowness index was moderately affected in films that included TiO2 particles processed using USME-VF.

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Section: Resultsmentioning

confidence: 99%

Pigmentation and Degradative Activity of TiO2 on Polyethylene Films Using Masterbatches Fabricated Using Variable-Frequency Ultrasound-Assisted Melt-Extrusion

et al. 2020

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Ex situ synthesis of high-refractive-index polyimide hybrid films containing TiO2 chelated by 4-aminobenzoic acid

Liu

Chen

et al. 2014

European Polymer Journal

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A facile method for fabrication of titanium-doped hybrid materials with high refractive index

et al. 2014

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This paper presents a facile route to prepare a series of high refractive index and homogeneous hybrid resins with titanium in the backbone by a non-hydrolytic sol-gel process. The confirmation of the condensation reaction and the formation of Si-O-Ti hetero-metal bonds in the hybrid resins were conducted by FT-IR spectroscopy, FT-Raman spectroscopy and liquid state 29 Si-NMR spectroscopy. In addition, the molecular weight and molecular size of the hybrid resin were characterized by MALDI-TOF MS and small-angle X-ray scattering (SAXS), respectively. These results show that the content of Si-O-Ti bridges, condensation degree of precursors and molecular weight and size of these hybrid resins increase depending on the TPT content from 0 to 30%. Moreover, the refractive index of the hybrid resin varied from 1.57 to 1.62 with increasing TPT content and the hybrid resin was thermally cured by hydrosilylation in the presence of a Pt catalyst to fabricate a transparent TSR hybrid film. These experimental results demonstrated that the physical and chemical properties of these hybrid films, such as visible transparency, surface roughness and surface energy, dielectric constant, thermal stability and glass transition temperature were investigated as a function of the chemical composition.

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Transparent Nanocomposites of High Refractive Index Based on Epoxy Resin and TiO<SUB>2</SUB> Nanoparticle

Cited by 4 publications

References 0 publications

Pigmentation and Degradative Activity of TiO2 on Polyethylene Films Using Masterbatches Fabricated Using Variable-Frequency Ultrasound-Assisted Melt-Extrusion

Pigmentation and Degradative Activity of TiO2 on Polyethylene Films Using Masterbatches Fabricated Using Variable-Frequency Ultrasound-Assisted Melt-Extrusion

Ex situ synthesis of high-refractive-index polyimide hybrid films containing TiO2 chelated by 4-aminobenzoic acid

A facile method for fabrication of titanium-doped hybrid materials with high refractive index

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