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Abstracts
Structural changes in polyhydroxybutyrate (PHB) brought about by addition of chain extender and/or plasticizer were studied using ^{13}C MAS NMR spectra, which were measured using the direct polarization technique at 30 and 98°C. Four resonances associated with the CO, CH, CH_{2} and CH_{3} groups of PHB were observed in the spectra. The CH_{3} resonance appearing at 98°C shows splitting into two lines related to the crystalline and amorphous regions. Analysis of the CH_{3} resonances made it possible to estimate the influence of applied modifications on crystallinity and distribution of conformations in amorphous and crystalline domains of PHB samples.
Discipline
- 76.60.-k: Nuclear magnetic resonance and relaxation(see also 33.25.+k Nuclear resonance and relaxation in atomic and molecular physics and 82.56.-b Nuclear magnetic resonance in physical chemistry and chemical physics; for structure determination using magnetic resonance techniques, see 61.05.Qr; for biophysical applications, see 87.80.Lg; for NMR in superconducting materials, see 74.25.nj)
- 61.41.+e: Polymers, elastomers, and plastics(see also 81.05.Lg in materials science; for rheology of polymers, see section 83; for polymer reactions and polymerization, see 82.35.-x in physical chemistry and chemical physics)
- 81.05.Lg: Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials(for polymers and organic materials in electrochemistry, see 82.45.Wx)
Journal
Year
Volume
Issue
Pages
419-420
Physical description
Dates
published
2014-07
Contributors
author
- Department of Physics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
author
- Department of Physics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
author
- Department of Physics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
author
- Department of Physics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
author
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
author
- Institute of Polymer Materials, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
References
- [1] P. Alexy, P. Bugaj, J. Feranc, M. Pavlačková, K. Tomanová, F. Benovič, R. Plavec, M. Mihalík, M. Botošová, Chem. Listy 105, 241 (2011)
- [2] F. Nozirov, Z. Fojud, J Klinowski, S. Jurga, Solid State Nucl. Magn. Reson. 21, 197 (2002), doi: 10.1006/snmr.2002.0060
- [3] L. Zhang, H. Tang, G. Hou, Y. Shen, F. Deng, Polymer 48, 2928 (2007), doi: 10.1016/j.polymer.2007.03.026
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv126n1203kz