Journal
JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS
Volume 50, Issue 8, Pages 1500-1507Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00222348.2010.518889
Keywords
orientation; polylactide (PLA)/thermoplastic polyurethane elastomer (TPU) blend; self-reinforcement; solid hot stretching
Categories
Ask authors/readers for more resources
Highly oriented self-reinforced 80/20 blends of polylactide (PLA)/thermoplastic polyurethane elastomer (TPU) were successfully fabricated through solid hot stretching technology. Different from the isotropic sample, stress rose rapidly in a low strain region, and exhibited strain hardening for the drawn samples of the PLA/TPU blend. Superior mechanical properties of the blend, with the notched Charpy impact strength 150 KJ/m(2), and tensile strength 197 MPa, were achieved. With increasing hot stretch ratio, the storage modulus increased, the glass transition temperatures of the PLA-rich phase and TPU-rich phase in the blends moved to higher temperatures, and the melting temperature and crystallinity of the blend increased, indicating the stress-induced crystallization of the blend during drawing. The longitudinal fracture surfaces of the blends at different stretch ratios exhibited orderly arranged fibrillar bundle structure, which contributed to the significantly higher strength and toughness of the blend.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available