Poly-3-hydroxy butyric acid interaction with the transgenic flax fibers: FT-IRand Raman spectra of the composite extracted from a GM flax

摘要

The FT-IR and FT-Raman studies have been performed on commercial 3-hydroxy-butyric acid, commercialpoly-3-hydroxy butyric acid as well as poly-3-hydroxy butyric acid (PHB) produced by bacteria. The datawere compared to those obtained for poly-3-hydroxy butyric acid extracted from natural and geneticallymodified flax. Genetically modified flax was generated by expression of three bacterial genes coding forsynthesis of poly-3-hydroxy butyric acid. Thus transgenic flaxes were enhanced with different amountof the PHB.The discussion of polymer structure and vibrational properties has been done in order to get insight intodifferences among these materials. The interaction between the cellulose of flax fibers and embeddedpoly-3-hydroxybutyric acid has been also discussed.The spectroscopic data provide evidences for structural changes in cellulose and in PHB when synthe-sized in fibers. Based on this data it is suggesting that cellulose and PHB interact by hydrogen and esterbonds.