DAI Zhenyu, ZHOU Han, LI Naixiang, et al. Inherent factor elucidation to difference in oxygen barrier properties of PET and PEN with molecular simulation[J]. CIESC Journal, 2009, (10): 2517-2521.
DAI Zhenyu, ZHOU Han, LI Naixiang, et al. Inherent factor elucidation to difference in oxygen barrier properties of PET and PEN with molecular simulation[J]. CIESC Journal, 2009, (10): 2517-2521.DOI:
The static and dynamic structure of poly (ethylene terephthalate)(PET) and poly (ethylene naphthalate)(PEN) is compared with methods of quantum mechanics
molecular mechanics and molecular dynamics.These two polyesters have a similar chain structure. However
their dynamic structures are quite differentThe PET molecular chain is more flexible than that of PEN
which makes it much easier for oxygen diffusionHowever
due to the bulky naphthalene group
it is relatively difficult for the molecular chain motion
which provides the PEN fiber a better oxygen barrier property.