Effect of sawdust addition on the mechanical and water absorption properties of banana-sisal/epoxy natural fiber composites

2021 ◽  
Author(s):  
Niharika Kumari ◽  
Manikant Paswan ◽  
K. Prasad
Keyword(s):  
Water Absorption ◽  
Natural Fiber ◽  
Fiber Composites ◽  
Natural Fiber Composites ◽  
Absorption Properties

scholarly journals Mechanical And Water Absorption Properties of Madar And Bauhinia Racemosa Natural Fiber Composites

2019 ◽  
Vol 8 (2) ◽  
pp. 2338-2342 ◽  
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Water Absorption ◽  
Natural Fiber ◽  
Fiber Composites ◽  
Absorption Properties ◽  
Strength Performance ◽  
Weight Percentage ◽  
Polyester Composites ◽  
First Time

This paper focus on Madar and Bauhinia Racemosa fibers has high potential as reinforcing agents in polymer composites. The composites plates were fabricated by hand layup method with varying the fiber weight percentage of 5%,10%,15% and 20% on mechanical and water absorption properties are analyzed. The mechanical properties of such as tensile, flexural and impact properties of madar and Bauhinia Racemosa fiber mat reinforced polyester composites were studied at first time in this work. The tensile, flexural and impact strength of Bauhinia Racemosa fiber mat reinforced polyester composites had proved higher strength performance than the madar fiber mat reinforced polyester composites.

High-Performance Natural Fiber Composites Made from Technical Flax Textiles and Manufactured by Resin Transfer Molding

2017 ◽  
Vol 742 ◽  
pp. 263-270
Author(s):  
Stefan Pichler ◽  
Günter Wuzella ◽  
Thomas Hardt-Stremayr ◽  
Arunjunai Raj Mahendran ◽  
Herfried Lammer
Keyword(s):  
Water Absorption ◽  
High Performance ◽  
Natural Fiber ◽  
Volume Fraction ◽  
Resin Transfer Molding ◽  
Fiber Composites ◽  
Water Bath ◽  
Flexural Properties ◽  
Natural Fiber Composites ◽  
Transfer Molding

In the present work it is shown that the resin transfer molding (RTM) is a beneficial technique to manufacture natural fibers into high-performance natural fiber composites. At first, three different types of weaves were produced by using low-twist flax yarns and standard-twisted flax yarns. Laminates based on the weaves and a petrochemical derived epoxy thermoset were fabricated by RTM process. For each laminate different numbers of plies (4, 5, 6, and 7) were used to achieve a broad range of vf (from 32 % up to 55 %) which are having a pore volume fraction, vp, as low as possible (min. 0.7 % - max. 2.7 %). For the laminates, flexural properties in warp and weft direction were determined (ISO 14125) and the effect of respective yarn type on flexural properties was investigated. The best properties were achieved for the laminate based on weave2 with vf = 55 % (strength=303 MPa, modulus=19.3 GPa). When laminates were tested again after half of the year the modulus and strength were reduced, but the strainincreased. The laminates were immersed into a water bath (ASTM D570) to test the influence of vf and vp on the water absorption behavior. The maximum water uptake (4-7 wt.-%) and the maximum thickness swelling (3-12 %) were observed for the samples with higher vf. Laminates based on weave1 were immersed again into the water bath to investigate the extent of deterioration of flexural properties with respect to water absorption at various time intervals. The laminates were tested immediately after removing from the water bath and after re-drying.

scholarly journals Valorization of Invasive Plants from Macaronesia as Filler Materials in the Production of Natural Fiber Composites by Rotational Molding

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2220
Author(s):  
Zaida Ortega ◽  
Francisco Romero ◽  
Rubén Paz ◽  
Luis Suárez ◽  
Antonio Nizardo Benítez ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Invasive Plant ◽  
Natural Fiber ◽  
Ricinus Communis ◽  
Local Level ◽  
Natural Fibers ◽  
Fiber Composites ◽  
Filler Materials ◽  
Natural Fiber Composites ◽  
Rotational Molding

This paper compares the mechanical properties of different natural fiber composites produced by rotational molding as a way of waste valorization from campaigns to control invasive plant species in Macaronesia. Rotomolded parts produced with polymeric matrices (polyethylene) and filled with up to 20% by weight of cellulosic fibers obtained from Arundo donax L., Pennisetum setaceum, and Ricinus communis plants were characterized in terms of tensile, flexural, and impact strength. It was found that the sieving of natural fibers allowed for their introduction in higher loadings, from 10 (for un-sieved material) to 20%; fiber size greatly affected the mechanical properties of the final parts, although some combinations were proven not to reduce the mechanical properties of the neat resin. This study is a first approach to the valorization of residues obtained from periodic campaigns of the control of invasive species performed by public authorities, usually at the local level. It is important to highlight that the main objective of this research did not focus on economically profitable activity; instead, it was focused on the reduction of wastes to be disposed from ecosystem maintenance actions and the investment of potential income into preservation policies.

Multimodal assessment of flax dew retting and its functional impact on fibers and natural fiber composites

2020 ◽  
Vol 148 ◽  
pp. 112255 ◽  
Author(s):  
Brigitte Chabbert ◽  
Justine Padovani ◽  
Christophe Djemiel ◽  
Jordane Ossemond ◽  
Alain Lemaître ◽  
...  
Keyword(s):  
Natural Fiber ◽  
Fiber Composites ◽  
Natural Fiber Composites ◽  
Functional Impact ◽  
Multimodal Assessment

Predictions of the Mechanical Performance of Leaf Fiber Thermoplastic Composites by FEA

2021 ◽  
Author(s):  
Faris M. AL-Oqla
Keyword(s):  
Composite Materials ◽  
Cantilever Beam ◽  
Mechanical Performance ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Fiber Composites ◽  
Fiber Types ◽  
Natural Fiber Composites ◽  
Pull Out ◽  
Structural Applications

The available potential plant waste could be worthy material to strengthen polymers to make sustainable products and structural components. Therefore, modeling the natural fiber polymeric-based composites is currently required to reveal the mechanical performance of such polymeric green composites for various green products. This work numerically investigates the effect of various fiber types, fiber loading, and reinforcement conditions with different polymer matrices towards predicting the mechanical performance of such natural fiber composites. Cantilever beam and compression schemes were considered as two different mechanical loading conditions for structural applications of such composite materials. Finite element analysis was conducted to modeling the natural fiber composite materials. The interaction between the fibers and the matrices was considered as an interfacial friction force and was determined from experimental work by the pull out technique for each polymer and fiber type. Both polypropylene and polyethylene were considered as composite matrices. Olive and lemon leaf fibers were considered as reinforcements. Results have revealed that the deflection resistance of the natural fiber composites in cantilever beam was enhanced for several reinforcement conditions. The fiber reinforcement was capable of enhancing the mechanical performance of the polymers and was the best in case of 20 wt.% polypropylene/lemon composites due to better stress transfer within the composite. However, the 40 wt.% case was the worst in enhancing the mechanical performance in both cantilever beam and compression cases. The 30 wt.% of polyethylene/olive fiber was the best in reducing the deflection of the cantilever beam case. The prediction of mechanical performance of natural fiber composites via proper numerical analysis would enhance the process of selecting the appropriate polymer and fiber types. It can contribute finding the proper reinforcement conditions to enhance the mechanical performance of the natural fiber composites to expand their reliable implementations in more industrial applications.

Recycling of natural fiber composites: Challenges and opportunities

2022 ◽  
Vol 177 ◽  
pp. 105962
Author(s):  
Xianhui Zhao ◽  
Katie Copenhaver ◽  
Lu Wang ◽  
Matthew Korey ◽  
Douglas J. Gardner ◽  
...  
Keyword(s):  
Natural Fiber ◽  
Fiber Composites ◽  
Natural Fiber Composites ◽  
Challenges And Opportunities
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