The effects of thermochromic pigments on optical, mechanical, and heat insulation properties of plasticized PVC window film

Sakuldeemeekiat, Thamolchanok; Luamsri, Natchaya; Wootthikanokkhan, Jatuphorn; Phiriyawirut, Manisara

doi:10.1177/0892705718820392

Cited by 6 publications

(8 citation statements)

References 27 publications

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“…In addition, a significant amount of the NIR radiation was absorbed by metal oxide particles in the polymer composite films. A similar effect was also observed in the PVC/VO 2 composites [42], and that influenced the thermal stability and durability of the composite films.…”

Section: Advances In Polymer Technologysupporting

confidence: 67%

Synthesis, Characterizations, and Thermochromic Properties of VO2 Particles Grafted with PSS : PEDOT

Srirodpai

Wootthikanokkhan

Nawalertpanya

2022

Advances in Polymer Technology

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Vanadium dioxide (VO2) particles were modified by grafting with poly(styrene sulfonate) (PSS) and poly(3,4-ethylenedioxythiophene) (PEDOT) via surface-initiated atom transfer radical polymerization (SI-ATRP). Critical transition temperature ( T c ) of the modified VO2 ranging between 77 and 79°C was obtained. After mixing with acrylic-based emulsion, dispersion of the VO2 particles in the polymer matrix was significantly improved. The visible light transmittance through the composite films above 75% was maintained if a concentration of the modified VO2 particles loaded into acrylic polymer film was no greater than 1.0 wt%. The NIR transmittance through the acrylic/VO2@PSS : PEDOT also dropped by 9-10%, compared with that of the pure acrylic film (without any particles). Finally, glass substrates coated with the acrylic/VO2@PSS : PEDOT composite films could reduce the temperature inside a model house by 5-6°C, compared with that of the control system (pure acrylic coating film without VO2 particles). Overall, this work demonstrated that it was possible to improve the dispersion of VO2 particles in polymer films without sacrificing its NIR shielding ability by grafting the surface of VO2 particles with PSS : PEDOT chains, while providing the optimum grafting density and particle loading.

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Section: Advances In Polymer Technologysupporting

confidence: 67%

Synthesis, Characterizations, and Thermochromic Properties of VO2 Particles Grafted with PSS : PEDOT

Srirodpai

Wootthikanokkhan

Nawalertpanya

2022

Advances in Polymer Technology

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“…The plasma resonance frequency v p for one kind of free carriers was calculated from equation (12). The moments of optical spectrum M À1 and M À3 were computed from equation (13).…”

Section: Resultsmentioning

confidence: 99%

“…In this study, poly (vinyl chloride) is a thermoplastic polymer that has been studied intensively because it owns desired properties such as good rubbery, wide band gap, easy processing, transparency, and has low melt viscosity. 10–13…”

Section: Introductionmentioning

confidence: 99%

“…[5][6][7][8][9] In this study, poly (vinyl chloride) is a thermoplastic polymer that has been studied intensively because it owns desired properties such as good rubbery, wide band gap, easy processing, transparency, and has low melt viscosity. [10][11][12][13] In literature, few research papers have been published about the optical properties of the ZnO nanoparticles polymer composites. Al-Taa'y et al 14 concluded that the optical properties of a PVC films were enhanced by adding the ZnO nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

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Effect of non-annealed and annealed ZnO on the optical properties of PVC/ZnO nanocomposite films

Al-Shawabkeh

Elimat

Abushgair

2021

Journal of Thermoplastic Composite Materials

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The goal of this study was to investigate the optical properties of the prepared polyvinyl chloride (PVC)/zinc oxide (ZnO) nanocomposite films. The PVC/ZnO nanocomposite films consist of the addition of different concentrations with both non-annealed ZnO nanoparticles and ZnO nanoparticles annealed at temperature of 700°C. The PVC/ZnO nanocomposite films by weight concentrations of (0 wt.%, 2.5 wt.%, 5 wt.% and 10 wt.%) have been prepared by the casting method. The optical absorbance and transmittance values of the composites films were measured in the wavelength range between (250 to 1100 nm) at room temperature by using the UV-1800 Shimadzu spectrophotometer. The optical properties (absorption coefficient, dielectric constant, refractive index, and optical conductivity) have been investigated by the ultraviolet (UV) spectrophotometer. The optical parameters (direct optical energy gap, excitation energy for electronic transitions, the dispersion energy, static refractive index, static dielectric constant, optical oscillator strengths, the moments of optical spectrum, linear optical susceptibility, third-order nonlinear optical susceptibility, nonlinear refractive index, high-frequency dielectric constant, the carrier concentration to the effective mass ratio, the long wavelength refractive index and the plasma frequency) were calculated. The results showed that the optical properties behavior of the PVC/ZnO nanocomposite films was found to be dependent on the ZnO concentration, and photon wavelength. In addition, the results of the study show that the optical parameters can be influenced by alter the concentration of the nonannealed and annealed a ZnO nanoparticle in the PVC polymer matrix.

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“…Both pure and doped VO 2 nanoparticles with ultrafine spherical particles, , nanorods, − nanobelts, nanosheets, and core–shell structures, ,− have been synthesized to improve the thermochromic properties of organic nanocomposite films. Additionally, various kinds of transparent organics, including PU ,, or WPU, PDMS, − PEG, , PVA, , PVP, , EVA, PVC, PE, AA, , methacrylic acid/ethyl acrylate copolymer, ionic liquid, , and treated wood, , have been applied as the matrix materials.…”

Section: Vanadium Dioxidementioning

confidence: 99%

Thermochromic Energy Efficient Windows: Fundamentals, Recent Advances, and Perspectives

Zhang

Zhou

et al. 2023

Chem. Rev.

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Thermochromic energy efficient windows represent an important protocol technology for advanced architectural windows with energy-saving capabilities through the intelligent regulation of indoor solar irradiation and the modulation of window optical properties in response to real-time temperature stimuli. In this review, recent progress in some promising thermochromic systems is summarized from the aspects of structures, the micro-/mesoscale regulation of thermochromic properties, and integration with other emerging energy techniques. Furthermore, the challenges and opportunities in thermochromic energy-efficient windows are outlined to promote future scientific investigations and practical applications in building energy conservation.

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The effects of thermochromic pigments on optical, mechanical, and heat insulation properties of plasticized PVC window film

Cited by 6 publications

References 27 publications

Synthesis, Characterizations, and Thermochromic Properties of VO2 Particles Grafted with PSS : PEDOT

Synthesis, Characterizations, and Thermochromic Properties of VO2 Particles Grafted with PSS : PEDOT

Effect of non-annealed and annealed ZnO on the optical properties of PVC/ZnO nanocomposite films

Thermochromic Energy Efficient Windows: Fundamentals, Recent Advances, and Perspectives

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