HYDROXYVALERATE COPOLYMER

Holland, S.J. Jolly, A. M. Yasin, M. and Tighe, B. J. Rolymers for biodegradable medical devices. II. Hydroxybutyrate-hydroxyvalerate copolymers hydrolytic degradation studies. Biomater. 1987,8(4), 289-295. [Pg.37]

Myshkina, V. L. et al. Biosynthesis of poly-3-hydroxybutyrate-3-hydroxyvalerate copolymer by Azotobacter chroococcum strain 7B. Appl. Biochem. Microbiol. 2010, 46(3), 289-296. [Pg.43]

Gursel, L and Hasirci, V. Properties and drug release behaviour of poly(3-hydroxy-butyric acid) and various poly(3-hydroxybutyrate-hydroxyvalerate) copolymer microcapsules. J. M croewca/jsw/., 1995,12(2), 185-193. [Pg.44]

Miller, N. D. and WUhams, D. E On the biodegradation of poly-beta-hydroxybu-tyrate (PEIB) homopolymer and poly-beta-hydroxybutyrate-hydroxyvalerate copolymers. Bioiwate/ 1987, 8(2), 129-137. [Pg.78]

This fermentation was carried out with glucose as sole carbon source. In order to obtain 3-hydroxybutyrate-co-3-hydroxyvalerate copolymer, valerate was added when polymer accumulation phase began. Results are presented in Fig. 1 and 2 and Table 1. [Pg.141]

Byrom D (1992) Production of poly-beta-hydroxybutyrate-poly-beta-hydroxyvalerate copolymers. FEMS Microbiol Rev 103 247-250... [Pg.35]

Braunegg G, Bogensberger B (1985) Zur Kinetik des Wachstums und der Speicherung von Poly-D(-)-3-hydroxybuttersaure bei Alcaligenes latus. Acta Biotechnol 5 339-345 Byrom D (1992) Production of poly-P-hydroxybutyrate poly-P-hydroxyvalerate copolymers. FEMS Microbiol Rev 103 247-250... [Pg.79]

Wittmann C, Heinzle E (2001) Modeling and experimental design for metabolic flux analysis of lysine-producing Corynebacteria by mass spectrometry. Metab Eng 3 173-191 Wong MS, Causey TB, Mantzaris N, Bennett GN, San KY (2007) Engineering poly(3-hydroxy-butyrate-co-3-hydroxyvalerate) copolymer composition in E. coli. Biotechnol Bioeng 99 919-928... [Pg.84]

Slater S, Mitsky TA, Houmiel KL, Hao M, Reiser SE, Taylor NB, Tran M, Valentin HE, Rodriguez DJ, Stone DA, Padgette SR, Kishore G, Gruys KJ (1999) Metabolic engineering of Arabidopsis and Brassica for poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymer production. Nat Biotechnol 17 1011-1016... [Pg.212]

Another soft aliphatic polyester that may be used in manufacturing the pol5mer blends is poly(hydroxybutyTate-hydroxyvalerate) copolymer (PHBV), which is manufactured using a microbial-induced fermentation. One such PHBV copolyester is manufactured by Monsanto Company and has a glass transition temperature of about 0°C and a melting point of about 170°C. [Pg.91]

Figure 22.3 Melting temperature variation as a function of the comonomer content for poly-3-hydroxybutyrate-co-3-hydroxyvalerate copolymers. (Data from [121], original sonrce [44].)...

Davies,M.C.,Khan, M.A., Short,R.D.,Akhtar, S., Pouton, C., Watts, J.F. (1990) XPS and SSIMS analysis of the surface chemical structure of poly(caprolactone) and poly(P-hydroxybutyrate-P-hydroxyvalerate) copolymers. Biomaterials, 11,228-234. [Pg.1009]

Yasin, M, Tighe, B.J. (1992) Polvmers for biodegradable medical devices. Uii. hydroxy butyrate-hydroxyvalerate copolymers physical and degradative properties of blends with polycaprolactone. Biomaterials, 13, 9-16. [Pg.87]

Page, W. J., Bhanthumnavin, N., Manchalk, J., and Rumen, M. (1997). Production of Poly(Beta-Hydroxybutyrate-Beta-Hydroxyvalerate) Copolymer fi om Sugars by Azotobacter-Salinestris. Applied Microbiology and Biotechnology 48( 1), 88-93. [Pg.366]

These copolymers are semi-crystalline with melting temperatures ranging from 120 to 180 °C depending on the copolymer composition. Flexibility and ductility improves with increasing hydroxyvalerate copolymer content. [Pg.88]

MetaboEc engineering of Arabidopsis and Brassica for poly (3-hydroxybutyrate-co-3-hydroxyvalerate) copolymer production. Nat Biotechnol 17 1011-1016... [Pg.73]

Owen, A.J., Heinzel, J., Skrbic, Z., and Divjakovic, V., 1992, Crystallization and melting behavior of poly(hydroxybutyrate) (PHB) and PHB/hydroxyvalerate copolymer. Polymer 33 1563-1567. [Pg.182]

Orts, W.J., Marchessault, R.H., and Bluhm, T.L., 1991, Thermodynamics of the melting point depression in poly(P-hydroxybutyrate-co-p-hydroxyvalerate) copolymers. Macromolecules 24 6435-6438. [Pg.183]

Byrom, D. Production of poly- 8-hydroxybutyrate and poly-y6-hydroxyvalerate copolymers. FEm Microbiol Rev 1992, 103,247-250. [Pg.313]

N.D. Miller and D.F. Williams, "On the biodegradation of poly(P-hydroxybutyrate) (PHB) homopolymer and poly(P-hydroxybutyrate/hydroxyvalerate) copolymers". Biomaterials, 8,129-137,1987. [Pg.129]

Chemical structure of the poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymer (P(3HB-co-3HV)), where x and y refer to the number of 3-HB and 3-HV comonomer subunits in the polymer chain, respectively. [Pg.232]

Abstract The optical achvities of poly-(R)-lactide, poly-(S)-lactide, poly(beta -hydroxybutyrate) and two beta -hydroxyvalerate copolymers were measured in soluhon, as solid powders in suspension, and where possible, as films. Poly-(plus)-3-methyl-I-pentene was also reinvestigated. In some cases the specific rotahon values of powder samples showed significant differences from the values of the solution measurements. The discrepancies of the data observed seem to reflect the local environment of the polymer chains in supermolecular assemblies and consequently the sohd state structure (morphology) of the polymers. The circular dichroism (CD) spectra of the polymers were also measured in solution and in the form of their films. For comparison, the CD spectra of the namrally occurring protein casein and of the synthetic polypeptide poly-(i-)-proline were also measured. (Author abstract) 2 I Refs. [Pg.2276]

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