Morphology evaluation of biodegradable copolyesters based on dimerized fatty acid studied by DSC, SAXS and WAXS

0326319 - ÚMCH 2010 RIV PL eng J - Journal Article
Kozlowska, A. - Gromadzki, Daniel - El Fray, M. - Štěpánek, Petr
Morphology evaluation of biodegradable copolyesters based on dimerized fatty acid studied by DSC, SAXS and WAXS.
Fibres & Textiles in Eastern Europe. Roč. 16, č. 6 (2008), s. 85-88. ISSN 1230-3666. E-ISSN 1230-3666
Institutional research plan: CEZ:AV0Z40500505
Keywords : multiblock copolymers * DSC * WAXS
Subject RIV: CD - Macromolecular Chemistry
Impact factor: 0.439, year: 2008

Aliphatic copolyesters of succinic acid (SA) and dimerized fatty acid (saturated dilinoleic acid (DLA)) were synthesized via direct copolycondensation in the presence of 1,4-butane-diol. The thermal and mechanical properties of these copolymers were investigated as a function of the hard/soft segments' ratio. The results of small-angle X-ray scattering (SAXS) investigations revealed that the characteristic d spacing of the copolyester supermolecular structure increases from 7 nm to 14 nm with increasing content of soft segments, DLA. It was found that the crystalline phase content determined by WAXS increases from 22 to 66% and was found to increase with increasing content in polybutylene succinate (PBS) sequences and increasing polybutylene succinate (PBS) sequence length.
Permanent Link: http://hdl.handle.net/11104/0173457