Results 241 to 250 of about 63,320 (284)
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Diffusion of Butylated Hydroxy Toluol (BHT) in PVC Films
Spectroscopy Letters, 1989Abstract The diffusion coefficient of butylated hydroxy toluol (BHT) in solvent casted PVC films from tetrahydrofurane (THF) was studied by UV spectroscopy. Diffusion coefficient of BHT in PVC at 140, 160 and 180°C were determined as 1.0 × 10−12 3.0 × 10−12 and 6.0 × 10−12 m2/s. The activation energy of diffusion (Ea) was 66 kj/mol.
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A New Pseudophotochromic Benzothiazoles Doped PVC Films
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, 1994Abstract Under the influence of the UV light in 2-aryl substituted benzothiazoles doped PVC films take shapes, a new pseudophotochromic system. The coloured films were formed by two processes - the liberation of HCl during the photodegradation of PVC and an interaction between HCl and 2-arylsubstituted benzohiazoles (BT).
Ivan Petkov +2 more
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Pyrotechnic Films Based on Thermites Covered with PVC
Propellants, Explosives, Pyrotechnics, 2018AbstractIncorporation of pyrotechnics into a polymer film of approximately 0.5 mm thick can be used to conveniently prepare pyrotechnics for characterization and demonstration purposes as shown with various thermites. Pyrotechnics may be prepared from fuels and oxidants as sieve mixed powders or dispersed into liquids and mixed together.
Kenneth J. Smit +2 more
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Optical properties of PVC/Al2O3 nanocomposite films
Polymer Bulletin, 2018In this work, polyvinyl chloride (PVC) polymer films doped with 0, 2, 4, and 6 wt% Al2O3 nanoparticles with average size of 10 nm were prepared by solution casting route. Al2O3 nanoparticles are found to possess rhombohedral crystal structure, and PVC is partly crystallized as confirmed with XRD analysis.
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Properties of PVC. I. Properties of PVC films prepared by casting and by precipitation
Journal of Polymer Science Part A-1: Polymer Chemistry, 1969AbstractThis investigation compares the properties of PVC films prepared both by casting from tetrahydrofuran solution and from samples obtained by precipitation with properties of samples from the original PVC. The differences in properties are explained on the basis of solvent residues remaining in the samples even after tempering at higher ...
Jiří Maláč +2 more
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Near infrared (NIR) studies of PVC film photodegradation
Journal of Vinyl and Additive Technology, 2005Abstract Near infrared (NIR) spectroscopy was used to develop predictive models of color development for PVC film formulations subjected to accelerated weathering. The high correlations between color and NIR spectra result from the common polyene sequences origin of both measurements.
Dana Garcia, Mark Cibulsky
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Epitaxial growth of solution grown polyvinylchloride (PVC) films
Thin Solid Films, 1974Abstract Thin films of polyvinylchloride (PVC) have been grown epitaxially from three different solvents onto the (001) plane of rocksalt crystals by the isothermal immersion technique. The ranges of values of the growth parameters (temperature and concentration of the solution and immersion time) over which epitaxial growth is obtained have been ...
K.L. Chopra, A.C. Rastogi, G.L. Malhotra
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Properties of rigid films made of PVC nanocomposites
AIP Conference Proceedings, 2016PVC nanocomposites containing 0.5 wt. %/VCM of either nanosilica or hybrid core/shell type nanofiller were produced in-situ in suspension polymerisation and rigid films were prepared. The composites obtained were applied in the blends for rigid films. The properties of them were checked and showed advantageous differences in tear resistance and tensile
Maria Obloj-Muzaj +5 more
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Plasticizer Desorption from Coated PVC Films
Inorganic Materials: Applied Research, 2023V. G. Nazarov, A. V. Dedov
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