Effect of mercerization of flax fibers on wheat flour/flax fiber biocomposite with respect to thermal and tensile properties

2008 ◽  
Vol 15 (7-9) ◽  
pp. 759-770 ◽  
Author(s):  
Preetha Gopalakrishnan ◽  
Redouan Saiah ◽  
Richard Gattin ◽  
Jean Marc Saiter
Author(s):  
Lawrence R. Msalilwa ◽  
Yordan Kyosev ◽  
Amit Rawal ◽  
Uttam Kumar

Author(s):  
Christophe Baley ◽  
Antoine Le Duigou ◽  
Claudine Morvan ◽  
Alain Bourmaud

2019 ◽  
Vol 11 (13) ◽  
pp. 3558 ◽  
Author(s):  
Swarda S. Radkar ◽  
Ali Amiri ◽  
Chad A. Ulven

There has been a substantial increase in the usage of natural fibers and biodegradable polymers in composite materials due to the recent focus on sustainability of materials. Flax fibers have exhibited higher mechanical properties compared to most other natural fibers available. However, one of the major challenges faced in the use of flax fiber is its hydrophilicity. In this study, the tensile behavior of flax fiber tows removed from commercially available woven fabrics were investigated at different moisture levels. The breaking tenacity of fiber tows was shown to increase with an increase in moisture content of up to 25%. After this point, additional absorption of moisture resulted in a decrease of fiber tenacity. In addition, the diffusion process through flax fiber mat with different areal densities was investigated and the diffusion coefficients were determined using the desorption curves. Diffusion rates were not found to significantly change with varying areal densities of 200 to 400 gsm, but were significantly different when exposed to temperatures of 55 °C versus 80 °C.


2018 ◽  
pp. 143-150
Author(s):  
Oleksandr Holoviy ◽  
Anna Lytvynova

The article describes the design of two devices for implementation the method for determining the linear density of flax fiber. The results of the experiment confirmed the presence of correlation between the linear density of flax fiber in the sample and the time of passing through the sample a portion of the air of specified volume at a given pressure. The proposed method for determining the linear density of flax fibers can be used in laboratories of breeding establishments, enterprises of primary processing and textile industry


2009 ◽  
Vol 30 (11) ◽  
pp. 1595-1600 ◽  
Author(s):  
R. Saiah ◽  
P.A. Sreekumar ◽  
P. Gopalakrishnan ◽  
N. Leblanc ◽  
R. Gattin ◽  
...  

2010 ◽  
Vol 150-151 ◽  
pp. 1541-1545 ◽  
Author(s):  
Jie Zhang ◽  
Sha Li ◽  
Xiao Ming Qian

Fiber reinforced composites have been an important way to utilize agriculture plant fibers. Flax fiber is plant fiber and strong, biodegradable, anti-fungi and bacterial. Flax fiber reinforced PP fiberboard is thermoplastic with the advantages of low density, low cost, low energy consumption, and recyclable. The influences of flax / PP fiber blending ratio, molding temperature, molding time on the mechanical properties of flax / PP board were carefully investigated. After mathematical manipulations and experimental validation, it was found that the thermoplastic composite board had maximum tensile and bending strengths when the flax fibers were at 50% of the total weight, the molding temperature was 181 , and the molding time was 48 minutes.


2020 ◽  
Vol 4 (2) ◽  
pp. 64
Author(s):  
Madina Shamsuyeva ◽  
Boon Peng Chang ◽  
Natalie Vellguth ◽  
Manjusri Misra ◽  
Amar Mohanty ◽  
...  

The aim of this feasibility study is to develop application-oriented natural fiber-reinforced biocomposites with improved mechanical and durability performance. The biocomposites were manufactured via a film-stacking process of epoxy-coated flax textiles and polyamide 6 (PA6). The fabricated biocomposites were subjected to thermo-oxidative ageing for 250, 500 and 1000 h and tested with regard to tensile properties. The results show that the biocomposites with epoxy-coated flax fibers possess considerably higher tensile properties compared with the reference specimens under all tested conditions.


Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 559
Author(s):  
Vincenzo Fiore ◽  
Dionisio Badagliacco ◽  
Carmelo Sanfilippo ◽  
Riccardo Miranda ◽  
Antonino Valenza

The goal of this paper is to evaluate the effectiveness of a cost-effective and eco-friendly treatment based on the use of sodium citrate (Na3C6H5O7) on the mechanical properties of flax fiber reinforced composites. To this scope, flax fibers were soaked in mildly alkaline solutions of the sodium salt at different weight concentration (i.e., 5%, 10% and 20%) for 120 h at 25 °C. The modifications on fibers surface induced by the proposed treatment were evaluated through Fourier transform infrared analysis (FTIR), whereas scanning electron microscope (SEM) and helium pycnometer were used to obtain useful information about composites morphology. The effect of the concentration of the treating solution on the mechanical response of composites was determined through quasi-static tensile and flexural tests, Charpy impact tests and dynamical mechanical thermal (DMTA) tests. The results revealed that composites reinforced with flax fibers treated in 10% solution exhibit the best mechanical performances as well as the lowest void contents. SEM analysis supported these findings showing that, by treating fibers in solutions with concentration up to 10%, composites having better morphology can be manufactured, in comparison to untreated ones. Conversely, higher Na3C6H5O7 concentrations negatively affect both the morphology and the mechanical properties of composites.


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