Facile construction of cellulose/montmorillonite nanocomposite biobased plastics with flame retardant and gas barrier properties

Cellulose ◽  
2015 ◽  
Vol 22 (6) ◽  
pp. 3799-3810 ◽  
Author(s):  
Qiyang Wang ◽  
Jinghua Guo ◽  
Dingfeng Xu ◽  
Jie Cai ◽  
Yongtao Qiu ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Barrier Properties ◽  
Gas Barrier ◽  
Gas Barrier Properties

MULTILAYER GRAPHENE CHLORINE ISOBUTYL ISOPRENE RUBBER NANOCOMPOSITES: INFLUENCE OF THE MULTILAYER GRAPHENE CONCENTRATION ON PHYSICAL AND FLAME-RETARDANT PROPERTIES

2016 ◽  
Vol 89 (2) ◽  
pp. 316-334 ◽  
Author(s):  
D. Frasca ◽  
D. Schulze ◽  
M. Böhning ◽  
B. Krafft ◽  
B. Schartel
Keyword(s):  
Flame Retardant ◽  
Barrier Properties ◽  
Graphene Sheets ◽  
Multilayer Graphene ◽  
Gas Barrier ◽  
Low Concentrations ◽  
Rubber Nanocomposites ◽  
Flame Retardant Properties ◽  
Gas Barrier Properties ◽  
Isoprene Rubber

ABSTRACT In recent years, different nanoparticles have been proposed and successfully introduced as nanofillers in rubber nanocomposites. In this study, multilayer graphene (MLG) is proposed as a nanoparticle that functions efficiently at low concentrations. MLG consists of just 10 or so graphene sheets. Chlorine isobutyl isoprene rubber (CIIR)/MLG nanocomposites with different MLG loadings were prepared using an ultrasonically assisted solution mixing procedure followed by two-roll milling. The incorporation of MLG provides a clear improvement in the rheological, mechanical, curing, and gas barrier properties of the nanocomposites. Adding only 3 phr of MLG to CIIR increased the Young's modulus by more than two times and reduced the permeability of O2 and CO2 by 30%. Higher nanofiller concentrations yielded further improvement in the properties of the nanocomposites. Moreover, CIIR/MLG nanocomposites showed reduced flammability.

scholarly journals Impact of Backbone Amide Substitution at the Meta- and Para-Positions on the Gas Barrier Properties of Polyimide

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2097
Author(s):  
Qian Wen ◽  
Ao Tang ◽  
Chengliang Chen ◽  
Yiwu Liu ◽  
Chunguang Xiao ◽  
...  
Keyword(s):  
Transmission Rate ◽  
Barrier Properties ◽  
Polyimide Film ◽  
Flexible Display ◽  
Gas Barrier ◽  
Positron Annihilation Lifetime ◽  
Barrier Materials ◽  
Oxygen Transmission Rate ◽  
Display Technology ◽  
Gas Barrier Properties

This study designed and synthesised a meta-amide-substituted dianiline monomer (m-DABA) as a stereoisomer of DABA, a previously investigated para-amide-substituted dianiline monomer. This new monomer was polymerised with pyromellitic dianhydride (PMDA) to prepare a polyimide film (m-DABPI) in a process similar to that employed in a previous study. The relationship between the substitution positions on the monomer and the gas barrier properties of the polyimide film was investigated via molecular simulation, wide-angle X-ray diffraction (WXRD), and positron annihilation lifetime spectroscopy (PALS) to gain deeper insights into the gas barrier mechanism. The results showed that compared with the para-substituted DABPI, the m-DABPI exhibited better gas barrier properties, with a water vapour transmission rate (WVTR) and an oxygen transmission rate (OTR) as low as 2.8 g·m−2·d−1 and 3.3 cm3·m−2·d−1, respectively. This was because the meta-linked polyimide molecular chains were more tightly packed, leading to a smaller free volume and lower molecular chain mobility. These properties are not conducive to the permeation of small molecules into the film; thus, the gas barrier properties were improved. The findings have significant implications for the structural design of high-barrier materials and could promote the development of flexible display technology.

Tailoring morphology to improve the gas-barrier properties of thermoplastic polyurethane/ethylene-vinyl alcohol blends

2016 ◽  
Vol 56 (8) ◽  
pp. 922-931 ◽  
Author(s):  
Xiumei Gao ◽  
Dekun Sheng ◽  
Xiangdong Liu ◽  
Tongbing Li ◽  
Fance Ji ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Thermoplastic Polyurethane ◽  
Barrier Properties ◽  
Gas Barrier ◽  
Ethylene Vinyl Alcohol ◽  
Gas Barrier Properties

Structure, gas-barrier properties and overall migration of poly(lactic acid) films coated with hydrogenated amorphous carbon layers

Carbon ◽  
2013 ◽  
Vol 63 ◽  
pp. 274-282 ◽  
Author(s):  
S. Mattioli ◽  
M. Peltzer ◽  
E. Fortunati ◽  
I. Armentano ◽  
A. Jiménez ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Amorphous Carbon ◽  
Barrier Properties ◽  
Poly Lactic Acid ◽  
Gas Barrier ◽  
Hydrogenated Amorphous Carbon ◽  
Hydrogenated Amorphous ◽  
Gas Barrier Properties

Influence of α‐ZrP fillers and process conditions on the morphology and the gas barrier properties of filled polyamide 6 films

2008 ◽  
Vol 46 (16) ◽  
pp. 1734-1746 ◽  
Author(s):  
L. Olivier ◽  
M. Sabard ◽  
R. Fulchiron ◽  
E. Espuche ◽  
L. David ◽  
...  
Keyword(s):  
Barrier Properties ◽  
Polyamide 6 ◽  
Process Conditions ◽  
Gas Barrier ◽  
Gas Barrier Properties

Mechanical and Gas Barrier Properties of Poly(L-Lactic Acid) by Plasma-Enhanced Chemical Vapor Deposition of SiOx

2017 ◽  
Vol 57 (6) ◽  
pp. 581-590 ◽  
Author(s):  
Shuxin Song ◽  
Yu Wang ◽  
Min Liang ◽  
Xiaojing Qi ◽  
Jinjun Yang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Barrier Properties ◽  
Gas Barrier ◽  
Gas Barrier Properties
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