INFRARED-ANALYSIS ON BLENDS OF POLY(3-HYDROXYBUTYRIC ACID) AND STEREOREGULAR POLY(VINYL ALCOHOL) - INFLUENCE OF TACTICITY OF POLY(VINYL ALCOHOL) ON CRYSTALLIZATION OF POLY(3-HYDROXYBUTYRIC ACID)

Authors
IKEJIMA T YOSHIE N INOUE Y
Citation
T. Ikejima et al., INFRARED-ANALYSIS ON BLENDS OF POLY(3-HYDROXYBUTYRIC ACID) AND STEREOREGULAR POLY(VINYL ALCOHOL) - INFLUENCE OF TACTICITY OF POLY(VINYL ALCOHOL) ON CRYSTALLIZATION OF POLY(3-HYDROXYBUTYRIC ACID), Macromolecular chemistry and physics, 197(3), 1996, pp. 869-880
Citations number
28
Categorie Soggetti
Polymer Sciences
Journal title
Macromolecular chemistry and physics → ACNP
ISSN journal
10221352
Volume
197
Issue
3
Year of publication
1996
Pages
869 - 880
Database
ISI
SICI code
1022-1352(1996)197:3<869:IOBOPA>2.0.ZU;2-M
Abstract
The extents of crystallization of poly(3-hydroxybutyric acid) (P(3HB)) in blends of P(3HB) with stereoregular poly(vinyl alcohol) (PVA) have been studied by means of infared spectroscopy. The degree of crystall inity of P(3HB) was found to decrease by blending with atactic PVA whe n PVA was the predominant component of the blend. In P(3HB) blends wit h highly syndiotactic PVA, a significant suppression of P(3HB) crystal lization was observed in a wider range of blend composition than that in P(3HB)/atactic PVA blends. These results are consistent with previo us results obtained by means of solid-state C-13 nuclear magnetic reso nance and differential scanning calorimetry. In blends with highly iso tactic PVA, P(3HB) was found to crystallize in the same way as in pure P(3HB).