Characterization of plasma-treated poly (hydroxybutyrate) membrane surfaces by ESCA and contact angle measurements

Flösch, Dietmar; Clarotti, G.; Geckeler, Kurt E.; Schué, François; Göpel, Wolfgang

doi:10.1016/0376-7388(92)80126-5

Cited by 21 publications

(9 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many approaches have been taken to modify the surface of PHBV to date. For example, surface hydrophobicity and surface chemistry were altered using oxygen plasma treatment (4-7), perfluorohexane plasma (8), allylamine plasma (9), and ammonia plasma (10). In addition, studies investigated gamma irradiation induced graft polymerization of methyl methacrylate and 2-hydroxyethyl methacrylate (11) or acrylic acid (AAc) (12) onto PHBV.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Membrane by Combining Surface Aminolysis Treatment with Collagen Immobilization

Wang

Cao

2009

Journal of Macromolecular Science, Part A

View full text Add to dashboard Cite

Amino groups were introduced onto a poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) surface by applying 1,6-hexanediamine treatment. The effects of aminolysis time and 1,6-hexanediamine concentration on hydrophilicity of the treated PHBV were investigated using contact angle measurement. The occurrence of the aminolysis and the introduction of NH 2 groups were verified by X-ray photoelectron spectroscopy (XPS) and ninhydrin method. By use of the NH 2 groups as active sites, collagen was further immobilized on the aminolyzed PHBV (NH 2 -PHBV) membrane via a cross-linking agent, glutaraldehyde. The increase of nitrogen content and further decrease of water contact angle after immobilization of collagen suggested that the surfaces became more hydrophilic. Mouse bone marrow stromal cells (BMSc) cultured on untreated PHBV and treated PHBV films were evaluated by cell attachment, cell proliferation, and morphological observation under scanning electron microscope (SEM). The order of cytocompatibility is Coll-PHBV > NH 2 -PHBV> PHBV, indicating coll-PHBV was a promising material in future tissue-engineering application.

show abstract

Section: Introductionmentioning

confidence: 99%

Surface Modification of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Membrane by Combining Surface Aminolysis Treatment with Collagen Immobilization

Wang

Cao

2009

Journal of Macromolecular Science, Part A

View full text Add to dashboard Cite

show abstract

“…These approaches include plasma or gamma radiation grafting of acrylic acid or the oxidation of chemically grafted chains and the ozone induced grafting of chains to PHBV film. [22][23][24] Some of these approaches allow endowing solid polymer surfaces with a rich chemical functionality while keeping the polymer surface flat on a micrometer scale.…”

Section: Introductionmentioning

confidence: 99%

Bone cell viability on collagen immobilized poly(3‐hydroxybutrate‐co‐3‐hydroxyvalerate) membrane: Effect of surface chemistry

Tesema

Raghavan

Stubbs

2004

J of Applied Polymer Sci

View full text Add to dashboard Cite

ABSTRACT:The effect of surface chemistry on proliferation and morphology of bone cells cultured on surface modified poly(3-hydroxybutrate-co-3-hydroxyvalerate) (PHBV) and untreated PHBV was evaluated. The surface of cast PHBV film was physically and chemically immobilized with collagen. For preparing chemically immobilized collagen surface, PHBV film was ozone treated followed by grafting of PMAA chains and the immobilization of collagen. The surface roughness and hydrophilicity of PHBV film were determined by atomic force microscopy (AFM) and contact angle measurements, respectively. It was found that the duration of ozone exposure and monomer concentration used for grafting PMMA chains influenced the amount of collagen immobilized. The cell proliferation on PHBV surfaces with chemically and physically immobilized collagen was compared with untreated PHBV using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. The bone cell activity on chemically and physically immobilized collagen PHBV films was found to be 246 and 107% for UMR-106 and 68 and 9% for MC3T3 cell lines, respectively. Although the results are very preliminary, the chemically grafted collagen on PHBV surface provided a favorable matrix for cell proliferation.

show abstract

“…Nonspecific surface modification was performed by oxygen plasma treatment [1][2][3]14 and perfluorohexane plasma. 15 Specific modifications to PHBV were performed by Kang et al, 5 who used oxygen plasma activation followed by acrylic acid grafting. The introduced carboxylic acid groups were used to immobilize insulin on the material surface.…”

Section: Introductionmentioning

confidence: 99%

Introducing Amine Functionalities on a Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Surface: Comparing the Use of Ammonia Plasma Treatment and Ethylenediamine Aminolysis

et al. 2006

View full text Add to dashboard Cite

Amine functionalities were introduced onto the surface of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) films by applying radio frequency ammonia plasma treatment and wet ethylenediamine treatment. The modified surfaces were characterized by X-ray photoelectron spectroscopy (XPS) for chemical composition and Raman microspectroscopy for the spatial distribution of the chemical moieties. The relative amount of amine functionalities introduced onto the PHBV surface was determined by exposing the treated films to the vapor of trifluoromethylbenzaldehyde (TFBA) prior to XPS analysis. The highest amount of amino groups on the PHBV surface could be introduced by use of ammonia plasma at short treatment times of 5 and 10 s, but no effect of plasma power within the range of 2.5-20 W was observed. Ethylenediamine treatment yielded fewer surface amino groups, and in addition an increase in crystallinity as well as degradation of PHBV was evident from Fourier transform infrared spectroscopy. Raman maps showed that the coverage of amino groups on the PHBV surfaces was patchy with large areas having no amine functionalities.

show abstract

Characterization of plasma-treated poly (hydroxybutyrate) membrane surfaces by ESCA and contact angle measurements

Cited by 21 publications

References 7 publications

Surface Modification of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Membrane by Combining Surface Aminolysis Treatment with Collagen Immobilization

Surface Modification of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Membrane by Combining Surface Aminolysis Treatment with Collagen Immobilization

Bone cell viability on collagen immobilized poly(3‐hydroxybutrate‐co‐3‐hydroxyvalerate) membrane: Effect of surface chemistry

Introducing Amine Functionalities on a Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Surface: Comparing the Use of Ammonia Plasma Treatment and Ethylenediamine Aminolysis

Contact Info

Product

Resources

About