The influence of chemical composition of aliphatic-aromatic copolyesters on their properties

Journal Article · Thu May 15 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4876816· OSTI ID:22280338

Wojtczak, Malgorzata; Galeski, Andrzej; Piorkowska, Ewa ^[1]; Dutkiewicz, Slawomir ^[2]

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1. Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz (Poland)
2. Institute of Biopolymers and Chemical Fibres, Marii Sklodowskiej-Curie 19/27, 90-570 Lodz (Poland)

The chain microstructure and properties of a series of aliphatic-aromatic copolyesters in a range of compositions from 10 to 100% of aromatic components were studied by examining melting and crystallization behaviors, dynamic mechanical response, morphology, wide- (WAXS) and small-angle X-ray scattering (SAXS), and tensile deformation. Chain microstructure was analyzed by {sup 1}H NMR. The results indicate that most of copolyesters used in this study have essentially random distribution of comonomers. Copolyesters with more than 30 mol% of aromatic part crystallize with a crystal structure characteristic for homopolymer poly(butylene terephthalate) (PBT). However, some of the reflections from crystal planes are shifted towards lower diffraction angles as compared to butylene terephthalate homoplymer. The phase transition temperatures decrease with increasing aliphatic content. By means of polarized light microscopy (PLM), small-angle light scattering (SALS) and SAXS, crystallization behavior of a selected aliphatic-aromatic copolyester was further explored. Selected copolyester crystallizes in the form of thin fibrous crystals, few nanometers thick, which is the main factor influencing the depression of its melting temperature.

• OSTI ID: 22280338
• Journal Information: AIP Conference Proceedings, Vol. 1599, Issue 1; Conference: 7. international conference on times of polymers (TOP) and composites, Ischia (Italy), 22-26 Jun 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
BUTENES
CHEMICAL COMPOSITION
COMPARATIVE EVALUATIONS
CRYSTAL STRUCTURE
CRYSTALLIZATION
CRYSTALS
DEFORMATION
HYDROGEN 1
LIGHT SCATTERING
MELTING
MELTING POINTS
MICROSTRUCTURE
MORPHOLOGY
NANOSTRUCTURES
NUCLEAR MAGNETIC RESONANCE
SMALL ANGLE SCATTERING
X-RAY DIFFRACTION