Processing of Agricultural Biomass for Producing Reinforced Polymer Composites

Author(s):  
Birce Dikici ◽  
Samarth Motagi ◽  
Prahruth Kantamani ◽  
Suma Ayyagari ◽  
Gustavo Villarroel ◽  
...  

Abstract Fast growing plants or biomass wastes can be used as affordable and environmentally sustainable alternatives to synthetic insulation materials. The aim of this study was to investigate the mechanical properties (tensile strength and Young’s modulus) of natural fiber reinforced polymer composites as potential building materials. As a natural fiber, Bermuda grass seeds, conifer cones and pinecones are selected. The fundamental processes to develop nanofiber reinforced resin by processing agricultural waste fibers into nanocellulose is also investigated. Tensile tests are conducted to define stress/strain relationship. SEM tests are conducted to evaluate the surface topologies after fracture. The tensile fracture surfaces of composites were investigated. With the addition of Bermuda fibers, the stiffness of the vinyl ester sample was observed to increase by 624.2% compared to neat vinyl ester sample. With the addition of nanocellulose fibers, the stiffness of the composite was observed to increase by 53.3% compared to neat vinyl ester sample.

Author(s):  
Birce Dikici ◽  
Samarth Motagi ◽  
Prahruth Kantamani ◽  
Suma Ayyagari ◽  
Marwan Al-Haik

Abstract The aim of this study was to investigate the thermal conductivity of natural fiber reinforced polymer composites (NFRP) as potential structural materials. As a natural fiber, Bermuda grass seeds, conifer cones and pinecones are selected. The matrix comprised Vinyl ester resin. The mechanical properties (tensile strength and Young’s modulus) and fractography analysis were investigated in our previous study (Dikici B. M. S.-H., 2019). In the current study, the thermal conductivity was probed using transient plane source technique implemented in the TPS 2500S Thermal Constants Analyzer. The addition of 9% Bermuda fibers yielded a decrease of approximately 19.3% in thermal conductivity compared to that of the neat epoxy. With the addition of 9% nano cellulose fibers, a decrease of approximately 40.7% in thermal conductivity was observed in the nanocellulose/vinyl ester resin composite compared to the neat vinyl ester samples.


2020 ◽  
Vol 1002 ◽  
pp. 75-83
Author(s):  
Wafaa Mahdi Salih

Using PMMA Polymer reinforced by Natural Fiber (N.F.) materials have established much consideration because of several advantages for example low cost, non-abrasive, lightweight, non-toxic and the properties of bio-degradable. many kinds of research have been done in the recent usage of the natural reinforcing material to the preparation of different types of composites. Chemically treated jute fiber can enhance the surface of the fiber, decrease the absorption technique, and improve the roughness surface.in this research, pre-chemical treated in different lengths of jute- fibers in PMMA polymer-composites has been considered. Also, the effect of chemical treatment on mechanical properties of jute, jute reinforcing composite has been conferred. The results showed that the tensile strength T.S. of the treated in benzoylate solutions (4 mm) length fiber had good indicate to better interlocking between composite contents.Flexural-Strength F.S. of the-alkaline. solution treated (12 mm) length of fiber was obtained-better-results by increasing (16.5 %) compared with (2 mm) fiber-length. The fracture of the samples has discussed the relationship between composite adhesion. Impact Strength I.S. of the alkaline-treated (8,12 mm) fiber- a length that is due to to.better mechanical - interlocking between composite materials. The 2 mm fiber – length was not suitable-PMMA/ Jute composite in these tested for treated and untreated chemicals


2020 ◽  
Vol 1012 ◽  
pp. 14-19
Author(s):  
Michelle Souza Oliveira ◽  
Fabio da Costa Garcia Filho ◽  
Fernanda Santos da Luz ◽  
Artur Camposo Pereira ◽  
Luana Cristyne da Cruz Demosthenes ◽  
...  

Composite materials are being extensively studied for ballistic armor. Their main advantage is connected to the possibility of deeply reducing weight and costs by maintaining high performances in terms of strength and security. Epoxy composites are reinforced with natural fibers which are replacing other synthetic reinforcement materials. Composites are prepared using polymers as matrix material because of ease of production with different reinforcements. The mechanical strength of the natural fiber reinforced polymer composites has been compared with synthetic fiber reinforced polymer composites and it is found that for achieving equivalent mechanical strength of the material, the volume fraction of the natural fiber should be much higher than synthetic fiber. This work being an experimental study on untreated “as received” fique fabric-reinforced epoxy composites, to demonstrate the potential of this renewable source of natural fiber for use in a number of applications.


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