Polyvinyl alcohol/alkyl ketene dimer films with excellent water resistance and water vapor barrier properties

2021 ◽  
pp. 131045
Author(s):  
Son Van Nguyen ◽  
Bong-Kee Lee
Keyword(s):  
Water Vapor ◽  
Polyvinyl Alcohol ◽  
Water Resistance ◽  
Barrier Properties ◽  
Alkyl Ketene Dimer ◽  
Water Vapor Barrier

Oxygen and water vapor barrier properties of polyvinyl alcohol and zein bilayer‐coated paper

2021 ◽  
pp. 51707
Author(s):  
Syeda Shamila Hamdani ◽  
Zhao Li ◽  
Ping Ruoqi ◽  
Emily Rollend ◽  
Muhammad Rabnawaz
Keyword(s):  
Water Vapor ◽  
Polyvinyl Alcohol ◽  
Barrier Properties ◽  
Coated Paper ◽  
Water Vapor Barrier

Preparation and properties of poly (vinyl alcohol)/sodium caseinate blend films crosslinked with glutaraldehyde and glyoxal

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Bedriye Ucpinar Durmaz ◽  
Ayse Aytac
Keyword(s):  
Water Vapor ◽  
Vinyl Alcohol ◽  
Sodium Caseinate ◽  
Barrier Properties ◽  
Poly Vinyl Alcohol ◽  
Infrared Analysis ◽  
Crosslinking Reaction ◽  
Water Contact ◽  
Casting Technique ◽  
Water Vapor Barrier

Abstract Bio-based films containing poly (vinyl alcohol)/casein have poor mechanical and water vapor barrier properties that limit their use in packaging application. Some properties such as water resistance and tensile strength can be increased by the cross-linking process. For this reason, poly(vinyl alcohol)/sodium caseinate (PVA/SC) blends were crosslinked by adding glutaraldehyde (GLA) and glyoxal (GL) at different ratios in this work. The films were prepared by solution casting technique. Fourier transform infrared analysis (FTIR) confirmed the crosslinking reaction between the components. As a result of the crosslinking, the thicknesses, water vapor barrier properties and water contact angle values of the films have increased. The total soluble matters (TSM) of PVA/SC film decreased with increasing amounts of crosslinkers and GLA crosslinked films exhibited lower TSM. The addition of GLA and GL resulted in more strengthened films as verified by the tensile test. On the other hand, GLA crosslinked films were more flexible than un-crosslinked and GL crosslinked PVA/SC films. The hydrophilic PVA/SC film became more hydrophobic with the increasing amounts of crosslinkers. With the crosslinking, the PVA/SC film became more thermally stable. In conclusion, the crosslinked PVA/SC films were obtained with suitable properties for packaging applications.

Water vapor barrier properties of wheat gluten/silica hybrid coatings on paperboard for food packaging applications

2020 ◽  
Vol 26 ◽  
pp. 100561
Author(s):  
Cesare Rovera ◽  
Hasan Türe ◽  
Mikael S. Hedenqvist ◽  
Stefano Farris
Keyword(s):  
Water Vapor ◽  
Food Packaging ◽  
Wheat Gluten ◽  
Barrier Properties ◽  
Hybrid Coatings ◽  
Water Vapor Barrier ◽  
Silica Hybrid

scholarly journals Hybrid films with excellent oxygen and water vapor barrier properties as efficient anticorrosive coatings

RSC Advances ◽  
2018 ◽  
Vol 8 (38) ◽  
pp. 21651-21657 ◽  
Author(s):  
Jiajie Wang ◽  
Ting Pan ◽  
Jian Zhang ◽  
Xiaozhi Xu ◽  
Qing Yin ◽  
...  
Keyword(s):  
Water Vapor ◽  
Layered Double Hydroxide ◽  
Corrosion Behavior ◽  
Spin Coating ◽  
Tween 80 ◽  
Barrier Properties ◽  
Hybrid Films ◽  
Water Vapor Barrier ◽  
Anticorrosive Coatings ◽  
Double Hydroxide

A hydrophobic film is fabricated by spin-coating of Tween 80 modified layered double hydroxide and polydimethylsiloxane alternately, which displays enhanced oxygen/water vapor barrier properties and anti-corrosion behavior toward metal substrates.

scholarly journals Preparation and Properties of Cyanobacteria-Based Carbon Quantum Dots/Polyvinyl Alcohol/ Nanocellulose Composite

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1143 ◽  
Author(s):  
Li Xu ◽  
Ying Li ◽  
Shiyu Gao ◽  
Yue Niu ◽  
Huaxuan Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Polyvinyl Alcohol ◽  
Water Resistance ◽  
Composite Films ◽  
Barrier Properties ◽  
Carbon Quantum Dots ◽  
Infrared Light ◽  
Quantum Yields ◽  
Hydroxyl Groups ◽  
Light Barrier

Blue luminescent carbon quantum dots (CQDs) were prepared from cyanobacteria by a hydrothermal method. The PL quantum yields of the obtained CQDs was 5.30%. Cyanobacteria-based carbon quantum dots/polyvinyl alcohol/nanocellulose composite films were prepared, which could emit bright blue under UV light. FTIR characterization showed that the composite films had hydroxyl groups on the surface and no new groups were formed after combining the three materials. The photoluminescence (PL) spectra revealed that the emission of the prepared CQDs was excitation dependent. Studies on the water resistance performance and light barrier properties of the composite films showed that they possessed higher water resistance properties and better UV/infrared light barrier properties. Therefore, we report the cyanobacteria-based carbon quantum dots/polyvinyl alcohol/nanocellulose composite films have the potential to be applied in flexible packaging materials, anti-fake materials, UV/infrared light barrier materials and so on.

scholarly journals Effects of Immobilized Ionic Liquid on Properties of Biodegradable Polycaprolactone/LDH Nanocomposites Prepared by In Situ Polymerization and Melt-Blending Techniques

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 969
Author(s):  
Sonia Bujok ◽  
Jiří Hodan ◽  
Hynek Beneš
Keyword(s):  
Ionic Liquid ◽  
Water Vapor ◽  
Ring Opening ◽  
In Situ Polymerization ◽  
High Capacity ◽  
Barrier Properties ◽  
Melt Blending ◽  
Water Vapor Barrier ◽  
Double Hydroxides

The high capacity of calcinated layered double hydroxides (LDH) to immobilize various active molecules together with their inherent gas/vapor impermeability make these nanoparticles highly promising to be applied as nanofillers for biodegradable polyester packaging. Herein, trihexyl(tetradecyl)phosphonium decanoate ionic liquid (IL) was immobilized on the surface of calcinated LDH. Thus, the synthesized nanoparticles were used for the preparation of polycaprolactone (PCL)/LDH nanocomposites. Two different methods of nanocomposite preparation were used and compared: microwave-assisted in situ ring opening polymerization (ROP) of ε-caprolactone (εCL) and melt-blending. The in situ ROP of εCL in the presence of LDH nanoparticles with the immobilized IL led to homogenous nanofiller dispersion in the PCL matrix promoting formation of large PCL crystallites, which resulted in the improved mechanical, thermal and gas/water vapor barrier properties of the final nanocomposite. The surface-bonded IL thus acted as nanofiller surfactant, compatibilizer, as well as thermal stabilizer of the PCL/LDH nanocomposites. Contrary to that, the melt-blending caused a partial degradation of the immobilized IL and led to the production of PCL nanocomposites with a heterogenous nanofiller dispersion having inferior mechanical and gas/water vapor barrier properties.

scholarly journals Efficient Gas and Water Vapor Barrier Properties of Thin Poly(lactic acid) Packaging Films: Functionalization with Moisture Resistant Nafion and Clay Multilayers

2014 ◽  
Vol 26 (19) ◽  
pp. 5459-5466 ◽  
Author(s):  
Federico Carosio ◽  
Samuele Colonna ◽  
Alberto Fina ◽  
Gaulthier Rydzek ◽  
Joseph Hemmerlé ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Water Vapor ◽  
Barrier Properties ◽  
Poly Lactic Acid ◽  
Packaging Films ◽  
Water Vapor Barrier ◽  
Moisture Resistant

Water vapor barrier properties of Si–Zn–O/Al multilayer structures

2015 ◽  
Vol 275 ◽  
pp. 219-223 ◽  
Author(s):  
Tae-Yeon Kim ◽  
Jae-Hyeok Choi ◽  
Sung-Man Lee
Keyword(s):  
Water Vapor ◽  
Barrier Properties ◽  
Multilayer Structures ◽  
Water Vapor Barrier
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