The Experts below are selected from a list of 12426 Experts worldwide ranked by ideXlab platform

G. Moussa - One of the best experts on this subject based on the ideXlab platform.

  • Effect of flax Fibers treatments on the rheological and the mechanical behavior of a cement composite
    Construction and Building Materials, 2015
    Co-Authors: C. Sawsen, K. Fouzia, B. Mohamed, G. Moussa
    Abstract:

    The association of Plant Fibers with cement paste raises a number of problems in both fresh and hardened states. Different treatments are applied to flax Fibers with various methods within the aim to enhance the rheological properties of the cement mortar-fiber mixtures. Thus, the effects of these treatments on the properties of the Fibers are evaluated. The rheological characteristics of the cement mixtures and the mechanical properties of the composites are assessed. Results show an improvement in the properties of the Fibers, better rheological behavior of the cement mixtures and an increase of the mechanical strength of the composites. © 2015 Elsevier Ltd. All rights reserved.

Guijun Xian - One of the best experts on this subject based on the ideXlab platform.

  • An overview of structural-functional-integrated composites based on the hierarchical microstructures of Plant Fibers
    Advanced Composites and Hybrid Materials, 2018
    Co-Authors: Yan Li, Xiaosu Yi, Tao Yu, Guijun Xian
    Abstract:

    Plant fiber-reinforced composites have raised great attention among materials scientists and engineers during the past decade. Most of the efforts were put on the interfacial modifications to improve the mechanical properties of the composites so that they could partly replace the currently largely used glass fiber-reinforced composites. The modifications were mainly focused on the surface treatment of Plant Fibers so that mechanical or chemical bonding between Plant Fibers and polymeric matrices could be set up. However, the unique hierarchical microstructures of Plant Fibers make the building up of multiscale interfaces possible so that more forces or energies would be needed to fracture the Plant fiber-reinforced composites. The additional hollow structures could also bring benefits for sound absorption and damping properties. Therefore, this article reviewed R&D efforts to develop structural and functional-integrated Plant fiber-reinforced composites by fully taking advantage of the hierarchical microstructures of Plant Fibers. Firstly, the unique hierarchical structures of Plant Fibers were revealed and hierarchical theoretical models for mechanical properties were discussed. Then, the modification, characterization, and evaluation of Plant Fibers in terms of their interfacial properties with polymeric matrices, especially by nanotechnologies with the consideration of their unique hierarchical microstructures, were reviewed. Finally, the design and manufacture of quasi-structures and structural-damping components using technologies that have been fully adapted to state-of-the-art industrial processes for use in critical applications, such as aircraft interiors, rail transportation vehicles, and constructions, were also introduced. Graphical abstractHierarchical microstructures of Plant Fibers lead to the unique multiscaled fracture modes of their reinforced composites which can make the structural-functional-integrated composite structures possible.

  • An overview of structural-functional-integrated composites based on the hierarchical microstructures of Plant Fibers
    Advanced Composites and Hybrid Materials, 2018
    Co-Authors: Guijun Xian
    Abstract:

    Plant fiber-reinforced composites have raised great attention among materials scientists and engineers during the past decade. Most of the efforts were put on the interfacial modifications to improve the mechanical properties of the composites so that they could partly replace the currently largely used glass fiber-reinforced composites. The modifications were mainly focused on the surface treatment of Plant Fibers so that mechanical or chemical bonding between Plant Fibers and polymeric matrices could be set up. However, the unique hierarchical microstructures of Plant Fibers make the building up of multiscale interfaces possible so that more forces or energies would be needed to fracture the Plant fiber-reinforced composites. The additional hollow structures could also bring benefits for sound absorption and damping properties. Therefore, this article reviewed R&D efforts to develop structural and functional-integrated Plant fiber-reinforced composites by fully taking advantage of the hierarchical microstructures of Plant Fibers. Firstly, the unique hierarchical structures of Plant Fibers were revealed and hierarchical theoretical models for mechanical properties were discussed. Then, the modification, characterization, and evaluation of Plant Fibers in terms of their interfacial properties with polymeric matrices, especially by nanotechnologies with the consideration of their unique hierarchical microstructures, were reviewed. Finally, the design and manufacture of quasi-structures and structural-damping components using technologies that have been fully adapted to state-of-the-art industrial processes for use in critical applications, such as aircraft interiors, rail transportation vehicles, and constructions, were also introduced.

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

  • Plant fiber industrial waste reinforced polymer composites as a potential wood substitute material
    Journal of Composite Materials, 2008
    Co-Authors: Mohini Saxena, R K Morchhale, P Asokan, B K Prasad
    Abstract:

    This investigation deals with the property characterization and utilization of abundantly available and renewable resources of Plant Fibers such as jute and sisal. These Plant Fibers along with industrial wastes (fly ash and red mud) have been used for synthesizing value added composite materials. Relevant engineering properties such as physical and mechanical, resistance to abrasive wear, weathering and fire, etc., of the Plant fiber reinforced polymer matrix composites so synthesized were characterized. The characteristics of conventional wood and other commercially available potential candidate building materials were also compared to assess the application potential of the newly developed materials vis-a-vis their conventional counterparts. The study reveals that the developed polymer—natural fiber—industrial (inorganic) waste composites attain far superior mechanical properties and resistance to abrasive wear, fire, water absorption, weathering, and chemical attack, as compared to their conventional ...

  • Plant Fiber — Industrial Waste Reinforced Polymer Composites as a Potential Wood Substitute Material
    Journal of Composite Materials, 2008
    Co-Authors: Mohini Saxena, R K Morchhale, P Asokan, B K Prasad
    Abstract:

    This investigation deals with the property characterization and utilization of abundantly available and renewable resources of Plant Fibers such as jute and sisal. These Plant Fibers along with industrial wastes (fly ash and red mud) have been used for synthesizing value added composite materials. Relevant engineering properties such as physical and mechanical, resistance to abrasive wear, weathering and fire, etc., of the Plant fiber reinforced polymer matrix composites so synthesized were characterized. The characteristics of conventional wood and other commercially available potential candidate building materials were also compared to assess the application potential of the newly developed materials vis-a-vis their conventional counterparts. The study reveals that the developed polymer—natural fiber—industrial (inorganic) waste composites attain far superior mechanical properties and resistance to abrasive wear, fire, water absorption, weathering, and chemical attack, as compared to their conventional ...

Ramzi Khiari - One of the best experts on this subject based on the ideXlab platform.

  • extraction process optimization of juncus Plant Fibers for its use in a green composite
    Industrial Crops and Products, 2017
    Co-Authors: Houcem Naili, Oualid Limam, Ramzi Khiari, Ahmed Jelidi
    Abstract:

    Abstract In the context of the development of green building materials using Plant Fibers, this research has focused on the characterization of natural Fibers extracted from Juncus Plant, commonly called Juncus. A well-known chemical extraction method was applied here for the first time at our knowledge to the Juncus Plant, in order to obtain better mechanical characteristics (tensile strength and elastic modulus) and better surface morphology. Therefore, a chemical treatment with alkalization through various factors such as temperature, NaOH concentration (alkalizing agent), presence or not of sodium dithionite Na2S2O4 (for reducing lignin) and sodium hypochlorite NaOCl (chlorine bleach delignification agent) was performed. This study aims to determine the effects of different chemical treatments applied to the fiber extraction of Juncus stem, on the change in fiber diameter, surface state morphology, density, tensile strength and elastic modulus. As one of the Juncus fiber treatments considered in this work, the cold alkali-treatment did not give good results in terms of delignification of the Juncus Fibers (There is always non-cellulosic products on the treated fiber) and low values of tensile stress and modulus of elasticity. The treatment with a solution of 8% NaOH, sodium hypochlorite and sodium dithionite at hot temperature present the best result due to the effective delignification of the Fibers which has allowed reaching highest tensile strength and highest elastic modulus.

Vincent Placet - One of the best experts on this subject based on the ideXlab platform.

  • Towards hemp fabrics for high-performance composites : Influence of weave pattern and features
    Composites Part B: Engineering, 2020
    Co-Authors: Anne-clémence Corbin, Damien Soulat, Manuela Ferreira, Ahmad-rashed Labanieh, Xavier Gabrion, Pierrick Malecot, Vincent Placet
    Abstract:

    Recent developments in the field of bio-based composite materials are mainly focused on the use of unidirectional reinforcements. The production of woven fabrics and required yarns or rovings isstill complex for composite applications due to the finite length of Plant Fibers and to the high number of process parameters which can be tuned. This study focused on the influence of weave pattern and process parameters on the resulting material properties at different scales. Results from mechanical characterizations and X-ray nanotomography show that very competitive tensile properties can be obtained for woven hemp fabric composites made from low-twisted rovings, in particular when compared to the front-runner flax cross-ply laminate.