The Experts below are selected from a list of 573 Experts worldwide ranked by ideXlab platform

Oana Ghita - One of the best experts on this subject based on the ideXlab platform.

  • Enhanced Ductility of PEEK thin film with self-assembled Fibre-Like Crystals
    Nature Publishing Group, 2018
    Co-Authors: Yuan Wang, Binling Chen, Ken Evans, Oana Ghita
    Abstract:

    Abstract Poly Ether Ether Ketone (PEEK) is a high temperature polymer material known for its excellent chemical resistance, high strength and toughness. As a semi-Crystalline polymer, PEEK can become very brittle during long Crystallisation times and temperatures helped as well by its high content of rigid benzene rings within its chemical structure. This paper presents a simple quench Crystallization method for preparation of PEEK thin films with the formation of a novel Fibre-Like Crystal structure on the surface of the films. These quenched Crystallised films show higher elongation at break when compared with conventional melt Crystallised thin films incorporating spherulitic Crystals, while the tensile strength of both types of films (quenched Crystallised and conventional melt) remained the same. The fracture analysis carried out using microscopy revealed an interesting microstructure which evolves as a function of annealing time. Based on these results, a Crystal growth mechanism describing the development of the Fibre-Like Crystals on the surface of the quenched Crystallised films is proposed

Ghita O - One of the best experts on this subject based on the ideXlab platform.

  • Enhanced Ductility of PEEK thin film with self-assembled Fibre-Like Crystals
    'Springer Science and Business Media LLC', 2018
    Co-Authors: Wang Y, Chen B, Evans K, Ghita O
    Abstract:

    This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record.Poly Ether Ether Ketone (PEEK) is a high temperature polymer material known for its excellent chemical resistance, high strength and toughness. As a semi-Crystalline polymer, PEEK can become very brittle during long Crystallisation times and temperatures helped as well by its high content of rigid benzene rings within its chemical structure. This paper presents a simple quench Crystallization method for preparation of PEEK thin films with the formation of a novel Fibre-Like Crystal structure on the surface of the films. These quenched Crystallised films show higher elongation at break when compared with conventional melt Crystallised thin films incorporating spherulitic Crystals, while the tensile strength of both types of films (quenched Crystallised and conventional melt) remained the same. The fracture analysis carried out using microscopy revealed an interesting microstructure which evolves as a function of annealing time. Based on these results, a Crystal growth mechanism describing the development of the Fibre-Like Crystals on the surface of the quenched Crystallised films is proposed.This work is supported by the UK Engineering and Physical Science Research Council (EPSRC Grant No EP/L017318/1-Particle Shape and Flow behaviour in Laser Sintering: from modelling to experimental validation)

Wang Y - One of the best experts on this subject based on the ideXlab platform.

  • Enhanced Ductility of PEEK thin film with self-assembled Fibre-Like Crystals
    'Springer Science and Business Media LLC', 2018
    Co-Authors: Wang Y, Chen B, Evans K, Ghita O
    Abstract:

    This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record.Poly Ether Ether Ketone (PEEK) is a high temperature polymer material known for its excellent chemical resistance, high strength and toughness. As a semi-Crystalline polymer, PEEK can become very brittle during long Crystallisation times and temperatures helped as well by its high content of rigid benzene rings within its chemical structure. This paper presents a simple quench Crystallization method for preparation of PEEK thin films with the formation of a novel Fibre-Like Crystal structure on the surface of the films. These quenched Crystallised films show higher elongation at break when compared with conventional melt Crystallised thin films incorporating spherulitic Crystals, while the tensile strength of both types of films (quenched Crystallised and conventional melt) remained the same. The fracture analysis carried out using microscopy revealed an interesting microstructure which evolves as a function of annealing time. Based on these results, a Crystal growth mechanism describing the development of the Fibre-Like Crystals on the surface of the quenched Crystallised films is proposed.This work is supported by the UK Engineering and Physical Science Research Council (EPSRC Grant No EP/L017318/1-Particle Shape and Flow behaviour in Laser Sintering: from modelling to experimental validation)

  • Novel Fibre-Like Crystals in Thin Films of Poly Ether Ether Ketone (PEEK)
    'Elsevier BV', 2016
    Co-Authors: Wang Y, Chen B, Ke Evans, Or Ghita
    Abstract:

    Published onlineArticleThis paper highlights the fabrication and characterization of a new type of Crystal in quenched, cooled and annealed PEEK films. Following this process, a “Fibre-Like” Crystal structure has been identified. Across the film surface, these Fibres cross each other and form a random network of interconnected Fibres.The authors would Like to thanks for the support of the UK Engineering and Physical Science Research Council (EPSRC grant no EP/L017318/1)

Yuan Wang - One of the best experts on this subject based on the ideXlab platform.

  • Enhanced Ductility of PEEK thin film with self-assembled Fibre-Like Crystals
    Nature Publishing Group, 2018
    Co-Authors: Yuan Wang, Binling Chen, Ken Evans, Oana Ghita
    Abstract:

    Abstract Poly Ether Ether Ketone (PEEK) is a high temperature polymer material known for its excellent chemical resistance, high strength and toughness. As a semi-Crystalline polymer, PEEK can become very brittle during long Crystallisation times and temperatures helped as well by its high content of rigid benzene rings within its chemical structure. This paper presents a simple quench Crystallization method for preparation of PEEK thin films with the formation of a novel Fibre-Like Crystal structure on the surface of the films. These quenched Crystallised films show higher elongation at break when compared with conventional melt Crystallised thin films incorporating spherulitic Crystals, while the tensile strength of both types of films (quenched Crystallised and conventional melt) remained the same. The fracture analysis carried out using microscopy revealed an interesting microstructure which evolves as a function of annealing time. Based on these results, a Crystal growth mechanism describing the development of the Fibre-Like Crystals on the surface of the quenched Crystallised films is proposed

Chen B - One of the best experts on this subject based on the ideXlab platform.

  • Enhanced Ductility of PEEK thin film with self-assembled Fibre-Like Crystals
    'Springer Science and Business Media LLC', 2018
    Co-Authors: Wang Y, Chen B, Evans K, Ghita O
    Abstract:

    This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record.Poly Ether Ether Ketone (PEEK) is a high temperature polymer material known for its excellent chemical resistance, high strength and toughness. As a semi-Crystalline polymer, PEEK can become very brittle during long Crystallisation times and temperatures helped as well by its high content of rigid benzene rings within its chemical structure. This paper presents a simple quench Crystallization method for preparation of PEEK thin films with the formation of a novel Fibre-Like Crystal structure on the surface of the films. These quenched Crystallised films show higher elongation at break when compared with conventional melt Crystallised thin films incorporating spherulitic Crystals, while the tensile strength of both types of films (quenched Crystallised and conventional melt) remained the same. The fracture analysis carried out using microscopy revealed an interesting microstructure which evolves as a function of annealing time. Based on these results, a Crystal growth mechanism describing the development of the Fibre-Like Crystals on the surface of the quenched Crystallised films is proposed.This work is supported by the UK Engineering and Physical Science Research Council (EPSRC Grant No EP/L017318/1-Particle Shape and Flow behaviour in Laser Sintering: from modelling to experimental validation)

  • Novel Fibre-Like Crystals in Thin Films of Poly Ether Ether Ketone (PEEK)
    'Elsevier BV', 2016
    Co-Authors: Wang Y, Chen B, Ke Evans, Or Ghita
    Abstract:

    Published onlineArticleThis paper highlights the fabrication and characterization of a new type of Crystal in quenched, cooled and annealed PEEK films. Following this process, a “Fibre-Like” Crystal structure has been identified. Across the film surface, these Fibres cross each other and form a random network of interconnected Fibres.The authors would Like to thanks for the support of the UK Engineering and Physical Science Research Council (EPSRC grant no EP/L017318/1)