Results 141 to 150 of about 2,688 (164)

Comparative study of PHBV/TBP and PHBV/BPA blends

Polymer International, 2004
AbstractIn order to clarify the effects of phenols on properties of polyesters, the blends of poly[(3‐hydroxybutyrate)‐co‐(3‐hydroxyvalerate)] (PHBV) with 4,4′‐dihydroxydiphenylpropane (BPA) and p‐tert‐butylphenol (TBP) were studied. The FTIR spectra revealed that there was strong hydrogen‐bond (H‐bond) interaction between PHBV and both phenols.
Bin Fei, Cheng Chen, Hang Wu, Shuwen Peng, Xiuyan Wang, Lisong Dong   +5 more
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Antibiotic Release from Biodegradable PHBV Microparticles

Journal of Controlled Release, 1998
For the treatment of periodontal diseases, design of a controlled release system seemed very appropriate for an effective, long term result. In this study a novel, biodegradable microbial polyester, poly(3-hydroxybutyrate-co-3-hydroxyvalerate), PHBV of various valerate contents containing a well established antibiotic, tetracycline, known to be ...
D, Sendil, I, Gürsel, D L, Wise, V, Hasirci   +3 more
openaire   +2 more sources

Extrusion foaming of PHBV

Journal of Cellular Plastics, 2014
This paper reports work on extrusion foaming of poly(3-hydroxybutyrate- co-3-hydroxyvalerate) with a chemical blowing agent based on sodium bicarbonate and citric acid and calcium carbonate nucleation agent. It includes investigations in the effects of rheological behaviour of the polymer, blowing agent, nucleation agent and processing conditions on ...
Szegda, D, Duangphet, S, Song, J, Tarverdi, K   +3 more
openaire   +2 more sources

Genetic network driven control of PHBV copolymer composition

Journal of Biotechnology, 2006
We developed a detailed mathematical model describing the coupling between the molecular weight distribution dynamics of poly(3-hydroxybutyrate-co-3hydroxyvalerate) (PHBV) copolymer chains with those of hydroxybutyrate (HB) and hydroxyvalerate (HV) monomer formation.
Sergio, Iadevaia, Nikos V, Mantzaris
openaire   +2 more sources

Tissue engineered cartilage on collagen and PHBV matrices

Biomaterials, 2005
Cartilage engineering is a very novel approach to tissue repair through use of implants. Matrices of collagen containing calcium phosphate (CaP-Gelfix), and matrices of poly(3-hydroxybutyric acid-co-3-hydroxyvaleric acid) (PHBV) were produced to create a cartilage via tissue engineering.
Özkul, Aykut, Yildiz, C, Soysal, Yasemin, Ozdemir, T, Kose, Gt, Korkusuz, F, Hasirci, V   +6 more
openaire   +3 more sources

Novel Self‐Reinforced Films Based on Poly (3‐Hydroxybutyrate‐Co‐3‐Hydroxyvalerate) (PHBV) and PHBV Microparticles

Polymer Engineering & Science, 2018
Biodegradable self‐reinforced films of poly (3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHBV) and PHBV microparticles were prepared through the solvent casting method (srPHBV). Differential scanning calorimetry (DSC), wide angle X‐ray scattering (WAXS) and polarized optical microscopy results confirmed the nucleating effect of PHBV microparticles.
Sara Malmir, Belén Montero, Maite Rico, Luis Barral, Rebeca Bouza, Yousof Farrag   +5 more
openaire   +1 more source

Interaction of human smooth muscle cells on random and aligned nanofibrous scaffolds of PHBV and PHBV-gelatin

International Journal of Polymeric Materials and Polymeric Biomaterials, 2016
ABSTRACTTissue-engineered scaffolds with nanofibrous morphology have been shown to be effective in regeneration of tissues because nanofibers mimic the native architecture of the extracellular matrix. The unique alignment in the native tissue motivated the authors to fabricate aligned nanofibers of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV ...
Purushothaman Kuppan, Swaminathan Sethuraman, Uma Maheswari Krishnan   +2 more
openaire   +1 more source

Improvement in hydrophilicity of PHBV films by plasma treatment

Journal of Biomedical Materials Research Part A, 2005
AbstractPoly(3‐hydroxybutyrate‐co‐hydroxyvalerate) (PHBV) films were prepared by the solvent cast method. Oxygen and nitrogen plasma treatment were used to improve the hydrophilicity of the surface of PHBV films. The surface properties were characterized by contact angle measurement and X‐ray photoelectron spectroscopy (XPS). The water contact angle of
Yingjun, Wang, Ling, Lu, Yudong, Zheng, Xiaofeng, Chen   +3 more
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Electrospun PHBV/collagen composite nanofibrous scaffolds for tissue engineering

Journal of Biomaterials Science, Polymer Edition, 2007
Electrospinning has recently emerged as a leading technique for the formation of nanofibrous structures made of synthetic and natural extracellular matrix components. In this study, nanofibrous scaffolds were obtained by electrospinning a combination of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and type-I collagen in 1,1,1,3,3,3-hexafluoro-2 ...
Wan, Meng, Se-Yong, Kim, Jiang, Yuan, Jung Chul, Kim, Oh Hyeong, Kwon, Naoki, Kawazoe, Guoping, Chen, Yoshihiro, Ito, Inn-Kyu, Kang   +8 more
openaire   +2 more sources

Fabrication and characterization of bioactive wollastonite/PHBV composite scaffolds

Biomaterials, 2004
Composite scaffolds of polyhydroxybutyrate-polyhydroxyvalerate (PHBV) with bioactive wollastonite were fabricated by a compression moulding, thermal processing, and salt particulate leaching method. Structure and mechanical properties of the scaffolds were determined. The bioactivity of the composites was evaluated by soaking in a simulated body fluid (
Haiyan, Li, Jiang, Chang
openaire   +2 more sources