Polymer Processing with Supercritical Fluids

Fleming, Oliver S.; Kazarian, Sergei G.

doi:10.1002/3527606726.ch10

Cited by 49 publications

(37 citation statements)

References 14 publications

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“…A number of authors have shown that CO 2 can act as a plasticizer and induce mobility and interaction with the starch chains [26,[46][47][48][49].…”

Section: Samples Obtained By Extrusion Processmentioning

confidence: 99%

“…°C. This may be related to the decrease of the density of CO 2 with temperature at a constant pressure above the critical pressure [26], which can reduce the solvation power of ScCO 2 and the diffusivity of plasticizers on the starch network.…”

Section: Samples Obtained By Extrusion Processmentioning

confidence: 99%

“…In fact, the combination of supercritical fluid technology with ILs in the process of natural-based materials as a green approach represents an important alternative to conventional processing techniques [23][24][25][26]. One of the most commonly used fluids is carbon dioxide (CO 2 ), which is non-toxic, low price and requires low temperature and pressure to reach the supercritical condition (Tc = 31 °C and Pc = 73 bar) [24].…”

Section: Introductionmentioning

confidence: 99%

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Effect of a supercritical fluid on starch-based polymer processed with ionic liquid

Bendaoud

Chalamet

2015

European Polymer Journal

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“…A number of authors have shown that CO 2 can act as a plasticizer and induce mobility and interaction with the starch chains [26,[46][47][48][49].…”

Section: Samples Obtained By Extrusion Processmentioning

confidence: 99%

Section: Samples Obtained By Extrusion Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of a supercritical fluid on starch-based polymer processed with ionic liquid

Bendaoud

Chalamet

2015

European Polymer Journal

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“…Nitrogen and carbon dioxide have been applied in the polymeric foaming process as environmentally friendly blowing agents. An overview on the carbon dioxide and nitrogen assisted foaming process of glassy polymers is provided by Fleming and Kazarian [1] and Almanza et al [2]. A literature review of polymeric foams shows that there are many studies on the preparation of high-performance polymeric foams by increasing the number of cells (bubbles) and decreasing cell size.…”

Section: Introductionmentioning

confidence: 99%

“…A literature review of polymeric foams shows that there are many studies on the preparation of high-performance polymeric foams by increasing the number of cells (bubbles) and decreasing cell size. To seek this aim, different continuous and discontinuous process variants have been developed to prepare microcellular foam morphologies from glassy polymers [1,3,4]. Similarly, there are some reports about clay reinforced nanocomposite foams based on semicrystalline polymers [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Assisted heterogeneous multinucleation and bubble growth in semicrystalline ethylene-vinyl acetate copolymer/expanded graphite nanocomposite foams: Control of morphology and viscoelastic properties

Yousefzade¹,

Hemmati²,

Garmabi³

et al. 2015

Express Polym. Lett.

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Abstract. Nanocomposite foams of ethylene-vinyl acetate copolymer (EVA) reinforced by expanded graphite (EG) were prepared using supercritical nitrogen in batch foaming process. Effects of EG particle size, crosslinking of EVA chains and foaming temperature on the cell morphology and foam viscoelastic properties were investigated. EG sheet surface interestingly provide multiple heterogeneous nucleation sites for bubbles. This role is considerably intensified by incorporating lower loadings of EG with higher aspect ratio. The amorphous and non-crosslinked domains of EVA matrix constitute denser bubble areas. Higher void fraction and more uniform cell structure is achieved for non-crosslinked EVA/EG nanocomposites foamed at higher temperatures. With regard to the structural variation, the void fraction of foam samples decreases with increasing the EG content. Storage and loss moduli were analyzed to study the viscoelastic properties of nanocomposite foams. Surprisingly, the foaming process of EVA results in a drastic reduction in loss and storage moduli regardless of whether the thermoplastic matrix contains EG nanofiller or not. For the EVA/EG foams with the same composition, the nanocomposite having higher void fraction shows relatively lower loss modulus and more restricted molecular movements. The study findings have verified that the dynamics of polymer chains varies after foaming EVA matrix in the presence of EG.

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Polymerization in Supercritical Carbon Dioxide

Beginn

2010

Handbook of Green Chemistry

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The sections in this article are General Aspects Introduction and Scope Supercritical Fluids Solubility of Macromolecules in sc CO 2 Stabilizer Design for Dispersion Polymerizations Limitations of Polymer Preparation in sc CO 2 Polymerization in sc CO 2 Radical Polymerization in sc CO 2 Side‐chain Fluoropolymers Fluoroolefin Polymers Poly(Methyl Methacrylate) Polystyrene Other Vinyl Monomers Metal‐catalyzed Polymerizations Polyolefins Other Metal‐catalyzed Polymerizations Ionic Chain Polymerizations Cationic Polymerizations Coordinative Anionic Polymerization Conclusion

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Polymer Processing with Supercritical Fluids

Cited by 49 publications

References 14 publications

Effect of a supercritical fluid on starch-based polymer processed with ionic liquid

Effect of a supercritical fluid on starch-based polymer processed with ionic liquid

Assisted heterogeneous multinucleation and bubble growth in semicrystalline ethylene-vinyl acetate copolymer/expanded graphite nanocomposite foams: Control of morphology and viscoelastic properties

Polymerization in Supercritical Carbon Dioxide

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