Anomalous Mechanical Response of Stretched Film of Poly(3-Hydroxybutyrate-co-3-Hydroxyhexanoate)
Yuta Fukuda,
Khunanya Janchai,
Takenobu Sunagawa
et al.
Abstract:The mechanical responses during loading, unloading, and reloading cyclic tensile tests of a tubular blown film of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) are studied. Although the stress–strain curve recorded during the initial stretching process is typical for a crystalline polymer, the stretched film behaves like a rubber during the reloading process; that is, low modulus with a small residual strain after unloading. Furthermore, the stress–strain curves during the reloading process are an inverted “S”… Show more
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