The Experts below are selected from a list of 31533 Experts worldwide ranked by ideXlab platform

José-marie Lopez-cuesta - One of the best experts on this subject based on the ideXlab platform.

  • Flame Retardancy of Natural Fibers Reinforced Composites
    Towards Bio-based Flame Retardant Polymers, 2018
    Co-Authors: Rodolphe Sonnier, Aurélie Taguet, Laurent Ferry, José-marie Lopez-cuesta
    Abstract:

    Due to numerous advantages (high specific mechanical properties, low density, biosourcing, …), Natural Fibers from plants are considered as credible alternatives to glass or carbon Fibers for composites industry. Nevertheless, their relatively high flammability limits their potential applications. Many researches have been carried out to improve the flame retardancy of composites reinforced with Natural Fibers. This chapter attempts to establish the state-of-art of these researches.

  • Effect of cellulose, hemicellulose and lignin contents on pyrolysis and combustion of Natural Fibers
    Journal of Analytical and Applied Pyrolysis, 2014
    Co-Authors: G Dorez, Aurélie Taguet, Laurent Ferry, Rodolphe Sonnier, José-marie Lopez-cuesta
    Abstract:

    This paper investigates the effects of cellulose, hemicellulose and lignin on the pyrolysis and combustion of several Natural Fibers (cotton linter, flax, hemp, sugar cane, bamboo and coir). Different parameters have been selected to study the relations between chemical composition, pyrolysis and combustion: char yield (Res), effective heat of combustion (EHC), activation energy of combustion (Ea) and CO/CO2 ratio during cone calorimeter test. A correlation was found between these parameters and the lignin content in a large range of composition. The Natural Fibers with high content of lignin exhibit high char yield, high EHC, high Ea and low CO/CO2 ratio. However, a particular behavior was observed at low lignin/cellulose ratio. The presence of a low content of lignin with a high content of cellulose affects the degradation pathway of the latter and leads to charring and to incomplete combustion of these Fibers, limiting their contribution to the heat evolved during burning.

Jiří Militký - One of the best experts on this subject based on the ideXlab platform.

  • Sound Absorption Properties of Natural Fibers: A Review
    Sustainability, 2020
    Co-Authors: Tao Yang, Xiaoman Xiong, Michal Petrů, Muhammad Tayyab Noman, Rajesh Mishra, Jiří Militký
    Abstract:

    In recent years, in an attempt to substitute the conventional synthetic sound absorption material, Natural Fibers and their sound absorption properties have been increasingly studied. This is due to the fact that conventional synthetic fiber has potential health risks for human beings and significant environmental impact. In this review, existing and newly emerging Natural fiber sound absorbers are summarized and highlighted in three categories: raw material, fiber assembly and composite. The sound absorption mechanism, several widely used prediction models and the popular acoustic characterization methods are presented. The comparison of sound absorption properties between some Natural sound absorbers and glass fiber is conducted in two groups, i.e., thin material and thick material. It is found that many Natural Fibers have comparable sound absorption performance, some of them can be the ideal alternatives to glass fiber, such as kapok fiber, pineapple-leaf fiber and hemp fiber. Last, the conclusion part of this review gives an outlook regarding the promotion of the commercial use of Natural fiber by means of theoretical study, efficient and environmentally friendly pretreatment and Life Cycle Assessment.

Laurent Ferry - One of the best experts on this subject based on the ideXlab platform.

  • Flame Retardancy of Natural Fibers Reinforced Composites
    Towards Bio-based Flame Retardant Polymers, 2018
    Co-Authors: Rodolphe Sonnier, Aurélie Taguet, Laurent Ferry, José-marie Lopez-cuesta
    Abstract:

    Due to numerous advantages (high specific mechanical properties, low density, biosourcing, …), Natural Fibers from plants are considered as credible alternatives to glass or carbon Fibers for composites industry. Nevertheless, their relatively high flammability limits their potential applications. Many researches have been carried out to improve the flame retardancy of composites reinforced with Natural Fibers. This chapter attempts to establish the state-of-art of these researches.

  • Effect of cellulose, hemicellulose and lignin contents on pyrolysis and combustion of Natural Fibers
    Journal of Analytical and Applied Pyrolysis, 2014
    Co-Authors: G Dorez, Aurélie Taguet, Laurent Ferry, Rodolphe Sonnier, José-marie Lopez-cuesta
    Abstract:

    This paper investigates the effects of cellulose, hemicellulose and lignin on the pyrolysis and combustion of several Natural Fibers (cotton linter, flax, hemp, sugar cane, bamboo and coir). Different parameters have been selected to study the relations between chemical composition, pyrolysis and combustion: char yield (Res), effective heat of combustion (EHC), activation energy of combustion (Ea) and CO/CO2 ratio during cone calorimeter test. A correlation was found between these parameters and the lignin content in a large range of composition. The Natural Fibers with high content of lignin exhibit high char yield, high EHC, high Ea and low CO/CO2 ratio. However, a particular behavior was observed at low lignin/cellulose ratio. The presence of a low content of lignin with a high content of cellulose affects the degradation pathway of the latter and leads to charring and to incomplete combustion of these Fibers, limiting their contribution to the heat evolved during burning.

  • thermal and fire behavior of Natural Fibers pbs biocomposites
    Polymer Degradation and Stability, 2013
    Co-Authors: G Dorez, Aurélie Taguet, Laurent Ferry, Josemarie Lopezcuesta
    Abstract:

    Abstract This paper investigates and compares the thermal degradation and fire reaction of different Natural Fibers and their corresponding biocomposites. Polybutylene succinate (PBS) was used as polymer matrix. Cellulose, hemp, flax, sugar cane and bamboo were used as Natural Fibers and ammonium polyphosphate (APP) was used as fire retardant agent. The influence of fiber type, fiber content and the addition of APP were investigated using TGA, PCFC and cone calorimetry. The incorporation of Fibers in PBS reduces the thermal stability, and the time to ignition (TTI) of biocomposites, but it increases the mass residue corresponding to the formation of a char barrier. These results are ascribed to the components of Fibers, and the flammability of the gas released by the lignocellulosic Fibers. The fiber content does not influence the TTI, but affects significantly the peak of heat released rate (pHRR). Thus, a minimum content of Fibers is required to form a protective barrier during fire test. The addition of APP in the biocomposite leads to hot hydrolysis of PBS and phosphorylation of flax. Hence, the fire retarded biocomposite forms a barrier layer due to the charring of the matrix and the preservation of the fiber skeleton and therefore shows a significant decrease of the pHRR.

Aurélie Taguet - One of the best experts on this subject based on the ideXlab platform.

  • Flame Retardancy of Natural Fibers Reinforced Composites
    Towards Bio-based Flame Retardant Polymers, 2018
    Co-Authors: Rodolphe Sonnier, Aurélie Taguet, Laurent Ferry, José-marie Lopez-cuesta
    Abstract:

    Due to numerous advantages (high specific mechanical properties, low density, biosourcing, …), Natural Fibers from plants are considered as credible alternatives to glass or carbon Fibers for composites industry. Nevertheless, their relatively high flammability limits their potential applications. Many researches have been carried out to improve the flame retardancy of composites reinforced with Natural Fibers. This chapter attempts to establish the state-of-art of these researches.

  • Effect of cellulose, hemicellulose and lignin contents on pyrolysis and combustion of Natural Fibers
    Journal of Analytical and Applied Pyrolysis, 2014
    Co-Authors: G Dorez, Aurélie Taguet, Laurent Ferry, Rodolphe Sonnier, José-marie Lopez-cuesta
    Abstract:

    This paper investigates the effects of cellulose, hemicellulose and lignin on the pyrolysis and combustion of several Natural Fibers (cotton linter, flax, hemp, sugar cane, bamboo and coir). Different parameters have been selected to study the relations between chemical composition, pyrolysis and combustion: char yield (Res), effective heat of combustion (EHC), activation energy of combustion (Ea) and CO/CO2 ratio during cone calorimeter test. A correlation was found between these parameters and the lignin content in a large range of composition. The Natural Fibers with high content of lignin exhibit high char yield, high EHC, high Ea and low CO/CO2 ratio. However, a particular behavior was observed at low lignin/cellulose ratio. The presence of a low content of lignin with a high content of cellulose affects the degradation pathway of the latter and leads to charring and to incomplete combustion of these Fibers, limiting their contribution to the heat evolved during burning.

  • thermal and fire behavior of Natural Fibers pbs biocomposites
    Polymer Degradation and Stability, 2013
    Co-Authors: G Dorez, Aurélie Taguet, Laurent Ferry, Josemarie Lopezcuesta
    Abstract:

    Abstract This paper investigates and compares the thermal degradation and fire reaction of different Natural Fibers and their corresponding biocomposites. Polybutylene succinate (PBS) was used as polymer matrix. Cellulose, hemp, flax, sugar cane and bamboo were used as Natural Fibers and ammonium polyphosphate (APP) was used as fire retardant agent. The influence of fiber type, fiber content and the addition of APP were investigated using TGA, PCFC and cone calorimetry. The incorporation of Fibers in PBS reduces the thermal stability, and the time to ignition (TTI) of biocomposites, but it increases the mass residue corresponding to the formation of a char barrier. These results are ascribed to the components of Fibers, and the flammability of the gas released by the lignocellulosic Fibers. The fiber content does not influence the TTI, but affects significantly the peak of heat released rate (pHRR). Thus, a minimum content of Fibers is required to form a protective barrier during fire test. The addition of APP in the biocomposite leads to hot hydrolysis of PBS and phosphorylation of flax. Hence, the fire retarded biocomposite forms a barrier layer due to the charring of the matrix and the preservation of the fiber skeleton and therefore shows a significant decrease of the pHRR.

Rodolphe Sonnier - One of the best experts on this subject based on the ideXlab platform.

  • Flame Retardancy of Natural Fibers Reinforced Composites
    Towards Bio-based Flame Retardant Polymers, 2018
    Co-Authors: Rodolphe Sonnier, Aurélie Taguet, Laurent Ferry, José-marie Lopez-cuesta
    Abstract:

    Due to numerous advantages (high specific mechanical properties, low density, biosourcing, …), Natural Fibers from plants are considered as credible alternatives to glass or carbon Fibers for composites industry. Nevertheless, their relatively high flammability limits their potential applications. Many researches have been carried out to improve the flame retardancy of composites reinforced with Natural Fibers. This chapter attempts to establish the state-of-art of these researches.

  • Effect of cellulose, hemicellulose and lignin contents on pyrolysis and combustion of Natural Fibers
    Journal of Analytical and Applied Pyrolysis, 2014
    Co-Authors: G Dorez, Aurélie Taguet, Laurent Ferry, Rodolphe Sonnier, José-marie Lopez-cuesta
    Abstract:

    This paper investigates the effects of cellulose, hemicellulose and lignin on the pyrolysis and combustion of several Natural Fibers (cotton linter, flax, hemp, sugar cane, bamboo and coir). Different parameters have been selected to study the relations between chemical composition, pyrolysis and combustion: char yield (Res), effective heat of combustion (EHC), activation energy of combustion (Ea) and CO/CO2 ratio during cone calorimeter test. A correlation was found between these parameters and the lignin content in a large range of composition. The Natural Fibers with high content of lignin exhibit high char yield, high EHC, high Ea and low CO/CO2 ratio. However, a particular behavior was observed at low lignin/cellulose ratio. The presence of a low content of lignin with a high content of cellulose affects the degradation pathway of the latter and leads to charring and to incomplete combustion of these Fibers, limiting their contribution to the heat evolved during burning.