Using UV–vis spectrum to investigate the phase transition process of PMMA–SiO2@paraffin microcapsules with copper-chelating as the ion probe

Wu, Xinke; Wang, Yihai; Zhu, Pengli; Sun, Rong; Yu, Shuhui; Du, Ruxu

doi:10.1016/j.matlet.2010.11.022

Cited by 14 publications

(3 citation statements)

References 15 publications

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“…As it was mentioned, the particles agglomeration enhanced with the thermal treatment and crystallite size; however, the aggregates are homogeneously distributed within the polymeric matrix. Likewise, spectra of pure PMMA and PMMA/CeO2 nanocomposites show an absorption band at about 272 nm, which is attributed to the n-π* transition of the C=O group in the PMMA [42]. This band is attenuated with the incorporation of CeO2 treated at different temperatures causing a significant decrease in transmittance in the 250-360 nm range, which can be associated with the band-gap absorption of CeO2.…”

Section: Optical Propertiesmentioning

confidence: 94%

Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

et al. 2015

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Thick and homogeneous hybrid film systems based on poly(methyl methacrylate) (PMMA) and CeO2 nanoparticles were synthesized using the melt compounding method to improve thermal stability, mechanical and UV-shielding properties, as well as to propose them for use in the multifunctional materials industry. The effect of the inorganic phase on these properties was assessed by using two different weight percentages of synthesized CeO2 nanoparticles (0.5 and 1.0 wt %) with the sol–gel method and thermal treatment at different temperatures (120, 235, 400, 600 and 800 °C). Thereafter, the nanoceria powders were added to the polymer matrix by single screw extrusion. The absorption in the UV region was increased with the crystallite size of the CeO2 nanoparticles and the PMMA/CeO2 weight ratio. Due to the crystallinity of CeO2 nanoparticles, the thermal, mechanical and UV-shielding properties of the PMMA matrix were improved. The presence of CeO2 nanostructures exerts an influence on the mobility of PMMA chain segments, leading to a different glass transition temperature.

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Section: Optical Propertiesmentioning

confidence: 94%

Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

et al. 2015

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“…Additionally, spectra of pure PMMA and PMMA/ZrO 2 nanocomposites show two absorption bands at about 272 and 315 nm. These bands may be attributed to the n-p* transition of the C@O group in the PMMA [35,36].…”

Section: Optical Propertiesmentioning

confidence: 96%

Influence of ZrO2 nanoparticles and thermal treatment on the properties of PMMA/ZrO2 hybrid coatings

Reyes-Acosta

Torres‐Huerta

Domínguez‐Crespo

et al. 2015

Journal of Alloys and Compounds

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“…According to the reported results, one could infer that the presence of modified and unmodified GFs has no influence on the glass transition temperature ( T g ), crystallization temperature, and crystallinity of the composite. To amend the properties of PMMA, several nanoparticles have been used, such as silica , carbon nanotube , clay , graphene , and alumina .…”

Section: Introductionmentioning

confidence: 99%

Assessment of thermal, morphological, and mechanical properties of poly(methyl methacrylate)/glass flake composites

Salehi

Ehsani

Khonakdar

2015

J Vinyl Addit Technol

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In this work, poly(methyl methacrylate)/(glass flake) (GF) composites were prepared with different compositions via melt mixing. The effect of the filler ingredient on thermal behavior, morphology, and mechanical and optical properties was investigated by using various techniques, namely differential scanning calorimetry, ultraviolet-visible spectra, mechanical testing, and scanning electron microscopy. For evaluating the level of dispersion of particles, energy dispersive X-ray analysis was performed. Differential scanning calorimetry analysis showed that the glass transition temperature of the samples slightly increased by increasing GF content. Scanning electron microscopy images showed that sized flakes were uniformly dispersed within poly(methyl methacrylate). Energy dispersive Xray analysis images of samples with different inclusions of GFs showed that the appearance of white dense spots represents the GF particles. It was found that the presence of 0.5 wt% of GF in composites gave more transparency than the other compositions. Furthermore, this composition indicated maximum tensile strength and elongation-at-break values in comparison with the other compositions. J. VINYL ADDIT. TECHNOL., 23:62-69, 2017.

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Using UV–vis spectrum to investigate the phase transition process of PMMA–SiO2@paraffin microcapsules with copper-chelating as the ion probe

Cited by 14 publications

References 15 publications

Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

Influence of ZrO2 nanoparticles and thermal treatment on the properties of PMMA/ZrO2 hybrid coatings

Assessment of thermal, morphological, and mechanical properties of poly(methyl methacrylate)/glass flake composites

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