Barrier Properties of Biodegradable Bacterial Polyester Films - Natural Polymers, Biopolymers, Biomaterials, and Their Composites, Blends, and IPNs - page 74

common polyolefins. The resistances to water, gas, and high temperature of PHBV are
considered as excellent. Bacterially synthesized PHBV became attractive for applica-
tions in the biomedical materials and environmental friendly materials. The PHBV
materials are able to mimic the water vapor barriers of the conventional materials
known today, necessary properties for this type of applications.

KeyWords

• Crystallinity value

• dual-mode sorption

• hydroxyvalerate units

• macromolecules

• Vacuum quartz

aCKNoWledGmeNts
The authors are thankful to Dr. Corinne Chappey (UMR 6270 CNRS, Rouen, France)
for the technical insight and support in gas permeation experiments.