Blending and barrier properties of blends of modified polyamide and ethylene vinyl alcohol copolymer

2005 ◽  
Vol 43 (5) ◽  
pp. 511-521 ◽  
Author(s):  
Jen-Taut Yeh ◽  
Wei-Hua Yao ◽  
Qiangguo Du ◽  
Cheng-Chi Chen
Keyword(s):  
Vinyl Alcohol ◽  
Barrier Properties ◽  
Ethylene Vinyl Alcohol ◽  
Ethylene Vinyl Alcohol Copolymer

scholarly journals Recent Updates on the Barrier Properties of Ethylene Vinyl Alcohol Copolymer (EVOH): A Review

2018 ◽  
Vol 58 (2) ◽  
pp. 209-246 ◽  
Author(s):  
Caroline Maes ◽  
Wout Luyten ◽  
Geert Herremans ◽  
Roos Peeters ◽  
Robert Carleer ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Barrier Properties ◽  
Ethylene Vinyl Alcohol ◽  
Ethylene Vinyl Alcohol Copolymer

scholarly journals Ethylene Vinyl Alcohol Copolymer (EVOH) as a Functional Barrier against Surrogate Components Migrating from Paperboard

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Caroline Maes ◽  
Giberto Mitsuyoshi Yuki Junior ◽  
Cynthia Teniers ◽  
Wout Luyten ◽  
Geert Herremans ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Saturated Hydrocarbon ◽  
Barrier Properties ◽  
Threshold Value ◽  
Polyamide 6 ◽  
Mineral Oil ◽  
Ethylene Vinyl Alcohol ◽  
Barrier Materials ◽  
Ethylene Vinyl Alcohol Copolymer ◽  
Low Weight

Ethylene vinyl alcohol copolymer (EVOH) is a key material of interest as a functional barrier against substances migrating from recycled paperboard, due to its outstanding barrier properties. Three multilayer films containing two different grades of EVOH, L171B (3 µm) and F171B (3 and 5 µm), were benchmarked against a multilayer film containing polyamide 6/6.6 copolymer (PA 6/6.6, 3 µm) and monolayer polyethylene terephthalate (PET, 12 µm). The 5 films were evaluated as barrier materials against 5 surrogate substances simulating different migrants potentially present in recycled paperboard: n-heptadecane (C17) as a mineral oil-saturated hydrocarbon (MOSH), 4-methylbenzophenone (MBP) as a photoinitiator, di-n-propyl phthalate (DPP) as a plasticiser, and anthracene (ANT) and perylene (PER) as mineral oil aromatic hydrocarbons (MOAHs). The test was accelerated at 60°C for 25 days, which is equivalent to a shelf life of 2 years at 25°C. All films containing 3 or 5 µm EVOH were found to be good barriers, showing no breakthrough values over 1% of the initial concentration found in the paperboard, and they could easily compete with 12 µm PET. The multilayer with 3 µm PA 6/6.6 showed higher breakthrough values for both MBP and DPP than the other materials although still below the 1% threshold value. However, ANT showed substantial breakthrough values of nearly 2%, indicating that PA 6/6.6 might not offer enough protection against low-weight MOAH components.

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