ISSN:
1435-1536
Keywords:
Biopolymers
;
thermoplastics
;
dynamic modulus
;
X-ray scattering
;
mechanical anisotropy
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Dynamic tensile modulus and X-ray scattering measurements were made for a series of bacterially produced poly-Β-hydroxybutyrate/Β-hydroxyvalerate (PHB/HV) random copolymers. The position of the primary relaxation is shifted to lower temperatures by increasing HV content and the material becomes generally softer. Drawn PHB/ 17% HV copolymer shows conventional mechanical anisotropy. Results are presented comparing the dynamic mechanical behaviour of isotropic PHB/HV with that of conventional thermoplastics such as polyethylene terephthalate, isotactic polypropylene and polyethylene.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01412956
