Preparation of highly reflective silver metallized PVC film by autocatalytic deposition

2021 ◽  
pp. 51190
Author(s):  
Xiaomin Sun ◽  
Jisi Chen ◽  
Yanan Yin ◽  
Huan Chen ◽  
Jinxing Wu ◽  
...  
Keyword(s):  
Pvc Film

High PVC film-forming composite latex particles via miniemulsification, part 3: Optical properties

2006 ◽  
Vol 101 (6) ◽  
pp. 4526-4537 ◽  
Author(s):  
Ghurmallah H. Al-Ghamdi ◽  
E. David Sudol ◽  
Victoria L. Dimonie ◽  
Mohamed S. El-Aasser
Keyword(s):  
Optical Properties ◽  
Latex Particles ◽  
Film Forming ◽  
Pvc Film

scholarly journals Quality and shelf life of packaged fresh sliced mushrooms stored at two different temperatures

2008 ◽  
Vol 15 (4) ◽  
pp. 414 ◽  
Author(s):  
E. GONZÁLEZ-FANDOS ◽  
A. SIMON JIMENES ◽  
V. TOBAR PARDO
Keyword(s):  
Carbon Dioxide ◽  
Shelf Life ◽  
Agaricus Bisporus ◽  
Microbiological Quality ◽  
Air Atmosphere ◽  
Pvc Film ◽  
Different Temperatures ◽  
Aerobic And Anaerobic ◽  
Quality And Shelf Life

The sensory and microbiological quality of sliced mushrooms (Agaricus bisporus L.) packaged in films of perforated and non-perforated PVC and stored at 3 and 9ºC, was studied. The carbon dioxide and oxygen content inside the packages, colour, weight loss, sensory attributes, mesophiles, Pseudomonas, Enterobacteriaceae, aerobic and anaerobic spore formers were determined. The atmosphere generated with the perforated PVC film was similar to that of air atmosphere at 3 or 9ºC. T.he non-perforated PVC film generated inside the packages CO2 : O2 concentrations of 3.4% : 8.1% at 3ºC and CO2 : O2 concentrations of 4.5% : 0.15% at 9ºC. Browning of mushrooms was lower at 3 than at 9ºC. The quality of sliced mushrooms packaged in perforated PVC and stored at 3ºC was adequate after 9 days. However, at 9ºC, the slice deformation and brown blotches incidence were severe after 9 days. The atmosphere generated with non-perforated PVC inhibited aerobic microorganism growth compared to mushrooms packaged in perforated PVC. At 3ºC, the shelf life of mushrooms packaged in non perforated PVC was around 13 days. However, the extremely low O2 atmospheres generated at 9ºC was accompanied by off-odours and growth of anaerobic spore formers, although the appearance of sliced mushrooms was acceptable.;

scholarly journals Quality of fresh-cut avocado (Persea americana Mill.) stored under different temperatures

2009 ◽  
Vol 33 (4) ◽  
pp. 1095-1102 ◽  
Author(s):  
Ana Carla Marques Pinheiro ◽  
Eduardo Valério de Barros Vilas Boas ◽  
Lucas Carvalho e Silva ◽  
Alessandra de Paiva Alves ◽  
Marcelo La Selva ◽  
...  
Keyword(s):  
Persea Americana ◽  
Sodium Hypochlorite Solution ◽  
Rigid Plastic ◽  
Randomized Design ◽  
Pvc Film ◽  
Different Temperatures ◽  
Fresh Cut ◽  
Hedonic Scale ◽  
Storage Temperatures

The goal of this work was to evaluate the effect of different storage temperatures on the quality maintenance of fresh-cut 'Fortuna' avocado (Persea americana Mill.). The fruit was selected, washed and sanitized with sodium hypochlorite solution (190 ppm total residual chlorinee) for 15 minutes. After that, the tip was cut and the fruit was also cut in halves, peeled and the pit removed, manually. Then the halves were immersed in 0.5% calcium chlorite + 0.5% cysteine solution for 2 minutes, to avoid darkening and packed in rigid plastic covered with 20 micrometer thick plastic wrap (PVC film) with a permeability to O2, CO2 and water vapor of 15,000, 80,000 and 390 cm³/m²/day, respectively. The product was stored under 3 different temperatures 0, 5, 10ºC and evaluated at 5 different storege periods of 0, 2, 3, 5 and 6 days, in a randomized design in a 3x5 factorial. The storage of fresh-cut avocado at 5ºC is the best alternative because it determines better maintenance of quality of the avocado. These presented lower darkening of pulp, better scores for appearance and acceptability, lower softening and polyphenoloxidase activity, in comparison to those stored at 0 and 10ºC. The fresh-cut avocados stored at 5ºC presented a shelf life of 5 days, based, mainly on, appearance, score 7.3, sited between the concepts "like moderately" and "like very much" on a hedonic scale of 9 points and 86% of acceptability, at the end of 5 days of storage.

PVC film behavior under proton bombardment

1995 ◽  
Vol 45 (4) ◽  
pp. 629-636 ◽  
Author(s):  
J. Rickards ◽  
R. Trejo-Luna ◽  
E. Andrade
Keyword(s):  
Proton Bombardment ◽  
Pvc Film

Evaluation of physical and mechanical properties of heat shrink PVC film

2021 ◽  
Author(s):  
A. L. Vorozhtsov ◽  
R. G. Moginov ◽  
E. B. Bablyuk
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Pvc Film

Evaluation of the Botulism Hazard in Fresh Mushrooms Wrapped in Commercial Polyvinylchloride Film

1978 ◽  
Vol 41 (2) ◽  
pp. 120-121 ◽  
Author(s):  
D. A. KAUTTER ◽  
T. LILLY ◽  
R. LYNT
Keyword(s):  
Botulinum Toxin ◽  
Shelf Life ◽  
Pvc Film

The botulism hazard in fresh mushrooms wrapped in commercial polyvinylchloride (PVC) film appears to be minimal. At the end of their normal shelf-life, 1,078 packages of PVC-wrapped mushrooms were all free of botulinum toxin. Since inoculated mushrooms were occasionally found to be toxic (14 in 250 packages) when only one 1/8-inch hole was punched in the wrapper, and none became toxic when two holes were present, it seems prudent to recommend that PVC-wrapped tills of mushrooms have two holes in the wrapper.

Effects of Polyvinylamine and Polyvinyl Alcohol on DOP Migration of PVC Film

2013 ◽  
Vol 411-414 ◽  
pp. 2993-2996
Author(s):  
Yu Pu Deng ◽  
Lin Xue Du ◽  
Xi Hong Li ◽  
Xia Liu ◽  
Hai Jiao Liu
Keyword(s):  
Tensile Strength ◽  
Thermogravimetric Analysis ◽  
Polyvinyl Alcohol ◽  
Tensile Properties ◽  
Migration Rate ◽  
Control Sample ◽  
Mixed Solution ◽  
The Novel ◽  
Elongation At Break ◽  
Pvc Film

The novel packaging was synthesised by coating polyvinyl chloride (PVC) film with Polyvinylamine/Polyvinyl alcohol (PVAm/PVA) mixture which can effectively inhibit the migration of DOP in this paper. The effect of PVAm/PVA mixture on inhibiting DOP migration was detected via extraction tests. The results showed that the novel packaging significantly reduced the migration rate of DOP compared with the control (PVC film). After 24h extracted by hexane 40% PVAm in mixture being coated on PVC had the lowest migration rate (6.20%) among the samples, while 7.60% is the migration rate of control sample. Tensile properties analysis indicated the elongation at break and tensile strength of samples coating PVAm/PVA higher than control sample. The thermogravimetric analysis demonstrated that the PVAm/PVA mixed solution can deduce thermogravimetric rate. Therefore, coating PVC with PVAm/PVA mixture is an effective approach to suppress the migration of DOP.

Absorption and Fluorescence Properties of p-Substituted Stilbenes in Poly (vinyl chloride) Film

1995 ◽  
Vol 50 (12) ◽  
pp. 1175-1178
Author(s):  
A. Kawski ◽  
B. Kukliński ◽  
T. Nowosielski
Keyword(s):  
Double Bond ◽  
Polyvinyl Alcohol ◽  
Fluorescence Spectra ◽  
Experimental Studies ◽  
Absorption And Fluorescence Spectra ◽  
Emission Anisotropy ◽  
Poly Vinyl Chloride ◽  
Pvc Film ◽  
Linear Molecules ◽  
Chloride Film

Abstract Experimental studies have demonstrated that the absorption and fluorescence spectra of linear molecules with one double bond, i.e. 4-amino-4'-nitrostilbene (ANS), 4-dimethylamino-4'-nitro-stilbene (DNS) and 4,4'-diphenylstilbene (DPS), contained in preheated to 393 K or nonheated polyvinyl chloride) (PVC) films are identical in shape and position, unlike those observed for ANS, DNS and DPS in polyvinyl alcohol) (PVA) films. For polar ANS and DNS molecules in PVC film a decrease in the emission anisotropy with growing wavelength of the fluorescence band was observed. This unusual behaviour of the emission anisotropy is accounted for by the overlap of two close emission bands from different luminescent centres, resulting from different microenvironments of the ANS and DNS molecules in PVC film. The emission anisotropy of nonpolar DPS molecule in PVC does not change within the fluorescence spectrum.

Synthesis, characterization, and application of polyanisidines as efficient photostabilizers for poly(vinyl chloride) films

2019 ◽  
Vol 52 (6) ◽  
pp. 537-547
Author(s):  
Magdy W. Sabaa ◽  
Mohamed A Sanad ◽  
Mahmoud A Abd El-Ghaffar ◽  
Nourelhoda A Abdelwahab ◽  
Soha MA Sayed ◽  
...  
Keyword(s):  
Vinyl Chloride ◽  
Uv Irradiation ◽  
Oxidation Process ◽  
Irradiation Time ◽  
Chemical Oxidation ◽  
Polymeric Chain ◽  
Conductivity Measurements ◽  
Uv Absorber ◽  
Poly Vinyl Chloride ◽  
Pvc Film

Conducting polymers have great attention due to their electrical activity in π-electrons conjugation over backbone of the polymeric chain. These properties make them attractive for enormous applications. On that account, we prepared polyanisidines (PAs) derivatives ( ortho, meta, and para) by chemical oxidation process using ammonium peroxydisulfate as an initiator. The prepared PAs were characterized using various techniques. Moreover, conductivity measurements of PA derivatives showed that the ortho-derivative gave the highest value. The prepared PAs were investigated as photostabilizers for poly(vinyl chloride) (PVC) films. Different PVC films were prepared in the absence and the presence of PA derivatives and they were exposed to ultraviolet (UV) irradiation for 30 days. The gel weight % for irradiated PVC films was followed as a function of irradiation time. The results revealed that the blank PVC film (free PA derivatives) was completely degraded reaching 100% gel content. PVC films contain PA derivatives showed higher photostability than PVC blank film. A comparison between the investigated PA derivatives as UV stabilizers and Chimassorb commercial UV absorber was also investigated. PA derivatives showed better efficiency as UV stabilizers than the commercial one till 288 h of UV irradiation.

Synthesis and characterization of multiple-crosslinkable polyacrylate emulsion for PVC film ink

2020 ◽  
Vol 138 ◽  
pp. 105190
Author(s):  
Gan Gao ◽  
Guanzhou Luo ◽  
Mengyi Xu ◽  
Xu Shouping ◽  
Pihui Pi ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Pvc Film
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