Chemistry Reference
In-Depth Information
FIGUER 2.3
Dependences of effective constant for isotopic exchange (left
y
-axis) and
the shift of wave number for -NH-fragment in urethane groups (right
y
-axis) on PHBV
concentration in PHBVSPEU blends.
2.4 CONCLUSIONS
The complex dynamic and structural properties reveal the influence of
SPEU on the molecular dynamics and structure of PHBV, by forming in-
termolecular hydrogen bonds and setting up of energy and steric barriers
to PHBV crystallization. In terms of design of new biomedical compos-
ites, results presented have a scientific and practical interest to describe
their behavior at water-temperature exposure.
KEYWORDS
•
Biodegradable composition
•
Crystallinity
•
DSC
•
EPR
•
X-ray analysis
