Implantat auf Basis von Poly(3-hydroxybuttersäure)

Schmack, G.; Gliesche, Konrad; Nitschke, M.; Werner, C.

doi:10.1515/biomat.2002.3.1.21

Cited by 16 publications

(8 citation statements)

References 2 publications

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“…The PHB fibers demonstrate the dependence of textile properties on the DR (see Figure 5). This fact is in agreement with previous investigations 7, 15, 16. Data from mechanical testing such as fineness Tt, Young's modulus E t , tensile stress at break σ H , and elongation at break ε H , are compiled in Table 4.…”

Section: Resultssupporting

confidence: 91%

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Melt Spinning of Poly(3‐hydroxybutyrate) for Tissue Engineering Using Electron‐Beam‐Irradiated Poly(3‐hydroxybutyrate) as Nucleation Agent

Vogel

Voigt

Tändler

et al. 2008

Macromolecular Bioscience

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Electron-beam-irradiated poly(3-hydroxybutyrate) was used as a nucleating agent for poly(3-hydroxybutyrate) in a melt-spinning process. Molecular data and thermal properties of the irradiated samples were determined. The thermal properties of the nucleated melts were determined to assess the influence of the nucleation agents, and then spinning tests were carried out. Thermal and textile properties of the spun fibers were also determined. Estimations of the improvement of the crystallization in the spinline and of the inhibition of secondary crystallization in the fibers from the use of the described blood-compatible nucleation agents are given.

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Section: Resultssupporting

confidence: 91%

“…One point of interest is the production of biodegradable scaffolds from PHB for tissue engineering strategies based on different textile technologies (e.g., embroidering) 7. Therefore, there is a real need for fibers of PHB with excellent textile properties.…”

Section: Introductionmentioning

confidence: 99%

Melt Spinning of Poly(3‐hydroxybutyrate) for Tissue Engineering Using Electron‐Beam‐Irradiated Poly(3‐hydroxybutyrate) as Nucleation Agent

Vogel

Voigt

Tändler

et al. 2008

Macromolecular Bioscience

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“…One point of interest is the production of biodegradable scaffolds from PHB for tissue engineering strategies based on different textile technologies (e. g. embroidering) 1. Therefore there is a real need for fibers of PHB with excellent textile properties.…”

Section: Introductionmentioning

confidence: 99%

Melt Spinning of Poly(3‐hydroxybutyrate) Fibers for Tissue Engineering Using α‐Cyclodextrin/Polymer Inclusion Complexes as the Nucleation Agent

Vogel

Tändler

Häußler

et al. 2006

Macromolecular Bioscience

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This paper reports on an attempt to use CD and CD/PHB ICs as nucleation agents for PHB in a high-speed melt spinning process. At first rheological and thermal properties of the nucleated melts are determined in order to assess the influence of the nucleating agents. Then spinning tests are carried out. Thermal and textile properties of the spun PHB fibers are also determined. An estimation of the improvement of inhibition of the secondary crystallization from use of the described blood compatible nucleating agents is given.

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“…The PHB multifilaments were produced by a high‐speed melt‐spinning and spin‐drawing process 23. Textile scaffolds were made on a computer‐aided embroidery machine24 and coated with coll I or coll I/CS [collagen 1022 μg (± 43 μg) and CS 46 μg (± 6 μg) per scaffold] as previously described 10…”

Section: Methodsmentioning

confidence: 99%

Polymerization of linseed oil with phenolic resins

Çaylı

Küsefoǧlu

2010

J of Applied Polymer Sci

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In this study, linseed oil was directly polymerized with different oil soluble resoles. p-Ethyl (PEP), p-tertiary butyl (PTB), p-tertiary octyl (PTO), and p-phenyl (PPP) phenols were separately reacted with formaldehyde to give linseed oil soluble resoles. These were then reacted with linseed oil to give transparent rubbery polymers. A model reaction was performed with methyl oleate and PTB phenol resole to clarify the reaction mechanism. Reaction products were characterized with 1 H-NMR and IR techniques. Spectral examination of the model reaction showed that polymerization reaction proceeded via ene reaction of the quinone methide formed at the end group of the resole with the allylic positions of the fatty ester. Rubbery polymers were obtained with linseed oil using 10 to 40% of the different resoles. Hard, load bearing and tough materials were obtained at 40% phenolic resin loading. Mechanical properties of the materials were character-ized by dynamic mechanical analyzer (DMA) and stressstrain tests. The best mechanical and thermal properties were obtained with PEP resole which showed a storage modulus of 350 MPa and a tan d peak at 65 C. Storage moduli of 275, 250, and 30 were obtained for PPP, PTB, and PTO resoles-linseed oil polymers, respectively. At the same phenolic resin loading, elongation at break and swelling ratios in CH 2 Cl 2 increased with the longer alkyl substitution on the resole resins. The highest thermal stability was observed by PEP resole-linseed oil polymer which has a 5% weight loss temperature of 340 C as determined by TGA. The lowest thermal stability was observed for PTB resole-linseed oil polymer at 220 C.

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Implantat auf Basis von Poly(3-hydroxybuttersäure)

Abstract: ARBEITEN

Cited by 16 publications

References 2 publications

Melt Spinning of Poly(3‐hydroxybutyrate) for Tissue Engineering Using Electron‐Beam‐Irradiated Poly(3‐hydroxybutyrate) as Nucleation Agent

Melt Spinning of Poly(3‐hydroxybutyrate) for Tissue Engineering Using Electron‐Beam‐Irradiated Poly(3‐hydroxybutyrate) as Nucleation Agent

Melt Spinning of Poly(3‐hydroxybutyrate) Fibers for Tissue Engineering Using α‐Cyclodextrin/Polymer Inclusion Complexes as the Nucleation Agent

Polymerization of linseed oil with phenolic resins

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