Radiation-Induced Graft Polymerization of Poly(3-Hydroxybutyrate) and Its Copolymer

Mitomo, Hiroshi; Enjoji, Taro; Watanabe, Yuhei; Yoshii, Fumio; Makuuchi, Keizo; Saito, Terumi

doi:10.1080/10601329508013674

Cited by 47 publications

(28 citation statements)

References 21 publications

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“…This authors' research group recently succeeded in controlling the enzymatic degradability of PHB using the radiation graft copolymerization method (Bahari et al, 1997(Bahari et al, , 1998Cakmakli et al, 2001;Mitomo et al, 1995Mitomo et al, , 1996. In an earlier work our group described grafted hydrophilic monomers (2-hydroxyethyl methacrylate (HEMA) (Mitomo et al, 1995), acrylic acid (AAc) (Mitomo et al, 1996) and the hydrophobic monomers, styrene (St) (Bahari et al, 1997(Bahari et al, , 1998Cakmakli et al, 2001) and methyl methacrylate (MMA)) onto PHB.…”

Section: Introductionmentioning

confidence: 96%

“…In an earlier work our group described grafted hydrophilic monomers (2-hydroxyethyl methacrylate (HEMA) (Mitomo et al, 1995), acrylic acid (AAc) (Mitomo et al, 1996) and the hydrophobic monomers, styrene (St) (Bahari et al, 1997(Bahari et al, , 1998Cakmakli et al, 2001) and methyl methacrylate (MMA)) onto PHB. These experiments indicated that while grafting The radiation-induced graft polymerization of hydrophilic [sodium p-styrene sulfonate (SSS), acrylic acid (AAc)] and hydrophobic [styrene (St), methyl acrylate (MAAc)] monomers onto microbial poly(3-hydroxybutyrate) (PHB) powder was performed and the characteristics of the both grafting films obtained after remolding were compared.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of hydrophilic and hydrophobic monomers grafting on microbial poly(3-hydroxybutyrate)

Hsieh

Wada

Mitobe

et al. 2009

Journal of the Taiwan Institute of Chemical Engineers

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Effect of hydrophilic and hydrophobic monomers grafting on microbial poly(3-hydroxybutyrate)

Hsieh

Wada

Mitobe

et al. 2009

Journal of the Taiwan Institute of Chemical Engineers

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“…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

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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.

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“…In previous studies, we attempted to graft various monomers onto a PHB film to control its biodegradability. [5][6][7][8][9] The enzymatic degradability of a PHB film grafted with acrylic acid (AAc) was drastically suppressed with an increase in the degree of grafting (X g ) because nondegradable AAc covered the surface of the PHB film. 10 After the thermal remolding of PHB-g-AAc films, biodegradable PHB appeared on the surface.…”

Section: Introductionmentioning

confidence: 99%

Emulsion grafting of vinyl acetate onto preirradiated poly(3‐hydroxybutyrate) film

Wada

Tamada

Seko

et al. 2007

J of Applied Polymer Sci

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Vinyl acetate (VAc) was grafted onto poly(3-hydroxybutyrate) film by a preirradiation method. Grafting reactions were carried out in VAc/water/surfactant emulsion, VAc/water, and VAc/methanol systems. For emulsion grafting, Nonion L-4 was ascertained to be the optimum surfactant with respect to the stability of a single emulsion layer. The emulsion with a 10 : 1 (w/w) ratio of VAc to surfactant yielded the highest degree of grafting: 23%. The grafting efficiency in the emulsion and the water and methanol solvents were evaluated. The results indicated that the grafting efficiency of the emulsion was 100 times that of VAc/methanol when the same 2 wt % VAc was used in the grafting reaction.

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Radiation-Induced Graft Polymerization of Poly(3-Hydroxybutyrate) and Its Copolymer

Cited by 47 publications

References 21 publications

Effect of hydrophilic and hydrophobic monomers grafting on microbial poly(3-hydroxybutyrate)

Effect of hydrophilic and hydrophobic monomers grafting on microbial poly(3-hydroxybutyrate)

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

Emulsion grafting of vinyl acetate onto preirradiated poly(3‐hydroxybutyrate) film

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