volume 33, issue 2, P108-114 1993
DOI: 10.1002/pen.760330209
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Abstract: Abstract In this paper, the rheology of a 60 mol% para‐hydroxybenzoic acid (PHB)/40 mol% poly(ethylene terephthalate) (PET) copolyester (herein referred to as PHB60/PET40) produced by Unitika Co., Japan, was investigated using viscoelastic property temperature sweeps. In addition to the large‐scale hysteresis (super‐cooling) of viscoelastic properties that has also been seen with other PHB‐based materials, in which it is possible for several PHB linkages to occur side by side along the polymer backbone (most …

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