Poly(propylene carbonate)/aluminum flake composite films with enhanced gas barrier properties

2014 ◽  
pp. n/a-n/a ◽  
Author(s):  
Lipeng Zhai ◽  
Gaofeng Li ◽  
Yan Xu ◽  
Min Xiao ◽  
Shuanjin Wang ◽  
...  
Keyword(s):  
Propylene Carbonate ◽  
Composite Films ◽  
Barrier Properties ◽  
Gas Barrier ◽  
Aluminum Flake ◽  
Poly Propylene ◽  
Gas Barrier Properties

scholarly journals Block Copolyesters Containing 2,5-Furan and trans-1,4-Cyclohexane Subunits with Outstanding Gas Barrier Properties

2019 ◽  
Vol 20 (9) ◽  
pp. 2187 ◽  
Author(s):  
Giulia Guidotti ◽  
Laura Genovese ◽  
Michelina Soccio ◽  
Matteo Gigli ◽  
Andrea Munari ◽  
...  
Keyword(s):  
Fossil Fuels ◽  
Random Copolymer ◽  
Barrier Properties ◽  
Reactive Blending ◽  
Gas Barrier ◽  
Low Elastic Modulus ◽  
High Elongation ◽  
Copolymer Structure ◽  
Poly Propylene ◽  
Gas Barrier Properties

Biopolymers are gaining increasing importance as substitutes for plastics derived from fossil fuels, especially for packaging applications. In particular, furanoate-based polyesters appear as the most credible alternative due to their intriguing physic/mechanical and gas barrier properties. In this study, block copolyesters containing 2,5-furan and trans-1,4-cyclohexane moieties were synthesized by reactive blending, starting from the two parent homopolymers: poly(propylene furanoate) (PPF) and poly(propylene cyclohexanedicarboxylate) (PPCE). The whole range of molecular architectures, from long block to random copolymer with a fixed molar composition (1:1 of the two repeating units) was considered. Molecular, thermal, tensile, and gas barrier properties of the prepared materials were investigated and correlated to the copolymer structure. A strict dependence of the functional properties on the copolymers’ block length was found. In particular, short block copolymers, thanks to the introduction of more flexible cyclohexane-containing co-units, displayed high elongation at break and low elastic modulus, thus overcoming PPF’s intrinsic rigidity. Furthermore, the exceptionally low gas permeabilities of PPF were further improved due to the concomitant action of the two rings, both capable of acting as mesogenic groups in the presence of flexible aliphatic units, and thus responsible for the formation of 1D/2D ordered domains, which in turn impart outstanding barrier properties.

Self-assembly of vermiculite-polymer composite films with improved mechanical and gas barrier properties

2019 ◽  
Vol 180 ◽  
pp. 105198 ◽  
Author(s):  
Weiliang Tian ◽  
Zhong Li ◽  
Zhenhong Ge ◽  
Dongmei Xu ◽  
Kewei Zhang
Keyword(s):  
Polymer Composite ◽  
Self Assembly ◽  
Composite Films ◽  
Barrier Properties ◽  
Gas Barrier ◽  
Gas Barrier Properties

Influence of asymmetric substituent group 2-methyl-1,3-propanediol on bio-based poly(propylene furandicarboxylate) copolyesters

Soft Matter ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 402-410 ◽  
Author(s):  
Zhi-Yu Yang ◽  
Chin-Wen Chen ◽  
Syang-Peng Rwei
Keyword(s):  
Free Volume ◽  
Molecular Motion ◽  
Barrier Properties ◽  
Small Scale ◽  
Gas Barrier ◽  
Methyl Group ◽  
Substituent Group ◽  
Group 2 ◽  
Poly Propylene ◽  
Gas Barrier Properties

The effect of the pendant methyl group weakens gas barrier properties owing to small-scale molecular motion and an increase of free volume. These novel copolyesters have great potential for packing-related applications.

scholarly journals Layered structure graphene oxide/methylcellulose composites with enhanced mechanical and gas barrier properties

2018 ◽  
Vol 6 (27) ◽  
pp. 13203-13214 ◽  
Author(s):  
Rama Kanta Layek ◽  
Karthik Ram Ramakrishnan ◽  
Essi Sarlin ◽  
Olli Orell ◽  
Mikko Kanerva ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Layered Structure ◽  
Composite Films ◽  
Barrier Properties ◽  
Solvent Evaporation ◽  
Gas Barrier ◽  
Gas Barrier Properties

Layered structure graphene oxide/methylcellulose composite films with excellent mechanical and gas barrier properties were fabricated by a simple solvent evaporation assisted assembly.

Bio-inspired cross-linking with borate for enhancing gas-barrier properties of poly(vinyl alcohol)/graphene oxide composite films

Carbon ◽  
2015 ◽  
Vol 82 ◽  
pp. 513-522 ◽  
Author(s):  
Cheng-Lee Lai ◽  
Jung-Tsai Chen ◽  
Ywu-Jang Fu ◽  
Wei-Ren Liu ◽  
Yueh-Ru Zhong ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Vinyl Alcohol ◽  
Composite Films ◽  
Barrier Properties ◽  
Poly Vinyl Alcohol ◽  
Cross Linking ◽  
Gas Barrier ◽  
Oxide Composite ◽  
Gas Barrier Properties

Structure and Gas Barrier Properties of Poly(propylene-graft-maleic anhydride)/Phosphate Glass Composites Prepared by Microlayer Coextrusion

2010 ◽  
Vol 43 (9) ◽  
pp. 4230-4239 ◽  
Author(s):  
Mohit Gupta ◽  
Yijian Lin ◽  
Taneisha Deans ◽  
Eric Baer ◽  
Anne Hiltner ◽  
...  
Keyword(s):  
Maleic Anhydride ◽  
Phosphate Glass ◽  
Barrier Properties ◽  
Gas Barrier ◽  
Glass Composites ◽  
Poly Propylene ◽  
Gas Barrier Properties
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