Structural characteristics defining high barrier properties in polymeric materials

By J. Lagarón, R. Catalá, R. Gavara. 2004

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Nanoscience and nanotechnologies in food industries: opportunities and research trends (2014, background): “The barrier properties are further enhanced if the filler is less permeable, well dispersed in the matrix and with a high aspect ratio (Lagaron et al. 2004).”
High performance green barriers based on nanocellulose (2014, background): “Also, the high crystalline structure within the nanofibrils or whiskers contributes to the gas barrier properties [23,31].”
Characterisation of solution cast cellulose nanofibre - reinforced poly(lactic acid) (2010, background): “crystalline fibres can increase the travel path for gas or vapour movement through the composite (detour factor) and lead to slower diffusion processes [8, 9].”
Recent Updates on the Barrier Properties of Ethylene Vinyl Alcohol Copolymer (EVOH): A Review (2018, background): “atm) at 23 C and 0% RH,([24]) however, this polymer is difficult to process because of its low thermal degradation point, which is about 150 C, while its melting temperature is around 180–190 C.”