4. Conclusions
This work uses layers of self-assembly (based on hydrogen bonding) to
prepare stretchable gas barrier films. The combination of a high stretch
ratio is the most distinct feature in this work compared with other
inorganic platelet-reinforced polymers as gas barrier films. The LDH
nanosheets as well as the hydrogen bonding network in this work induce a
long diffusion length, thus suppressing the oxygen permeability. Based
on the extensibility of hydrogen bond, the composite film has good
oxygen resistance after large-deformation and repeated stretching, and
has strong competitiveness in terms of stretching ability and gas
barrier performance. The assembly strategy based on hydrogen bonding
could be expanded in the construction of barrier materials used in
flexible electronics, sensors and packing of devices.
Supporting Information Available:DipCoater image, Schematic diagram
of tensile film of tensile testing machine and OTR measurement. This
material is available free of charge via the Internet at XXX.
Acknowledgements. This work was supported by the National
Natural Science Foundation of China (21671015, 21521005) and the
Fundamental Research Funds for the Central Universities (XK1802-6,
BHYC1702B, and XK1803-05).