Biodegradable Copolyester-Based Natural Fibers–Polymer Composites: Morphological, Mechanical, and Degradation Behavior

Author(s):  
Jyoti Giri ◽  
Rameshwar Adhikari
2020 ◽  
Vol 2 (1) ◽  
pp. 28-35
Author(s):  
Rokki Manurung ◽  
Sutan Simanjuntak ◽  
Jesayas Sembiring ◽  
Richard A.M. Napitupulu ◽  
Suriady Sihombing

Composites are materials which are mixed with one or more different and heterogeneous reinforcement. Matrix materials can generally be polymers, ceramics and metals. The matrix in the composite serves to distribute the load into all reinforcing material. Matrix properties are usually ductile. The reinforcing material in the composite has the role of holding the load received by the composite material. The nature of the reinforcing material is usually rigid and tough. Strengthening materials commonly used so far are carbon fiber, glass fiber, ceramics. The use of natural fibers as a type of fiber that has advantages began to be applied as a reinforcing material in polymer composites. This study seeks to see the effect of the use of bamboo natural fibers in polyester resin matrix on the strength of polymer composites with random and straight lengthwise fiber variations. From the tensile test results it can be seen that bamboo fibers can increase the strength of polymer composites made from polyester resin and the position of the longitudinal fibers gives a significantly more strength increase than random fibers.


Author(s):  
Enrique Rocha-Rangel ◽  
J. Ernesto Benavides-Hernández ◽  
José A. Rodríguez-Garcia ◽  
Alejandro Altamirano-Torres ◽  
Y. Gabriela Torres-Hernández ◽  
...  

2020 ◽  
Vol 29 (7) ◽  
pp. 625-648 ◽  
Author(s):  
Mohammad Asim ◽  
Mohd T. Paridah ◽  
M. Chandrasekar ◽  
Rao M. Shahroze ◽  
Mohammad Jawaid ◽  
...  

2019 ◽  
Vol 40 (8) ◽  
pp. 3351-3360 ◽  
Author(s):  
Filipe V. Ferreira ◽  
Ivanei F. Pinheiro ◽  
Marcos Mariano ◽  
Luciana S. Cividanes ◽  
João C.M. Costa ◽  
...  

2011 ◽  
Vol 46 (9) ◽  
pp. 1051-1065 ◽  
Author(s):  
Wonsuk Kim ◽  
Alan Argento ◽  
Ellen Lee ◽  
Cynthia Flanigan ◽  
Daniel Houston ◽  
...  

The high strain-rate constitutive behavior of polymer composites with various natural fibers is studied. Hemp, hemp/glass hybrid, cellulose, and wheat straw-reinforced polymeric composites have been manufactured, and a split-Hopkinson pressure bar apparatus has been designed to measure the dynamic stress–strain response of the materials. Using the apparatus, compressive stress–strain curves have been obtained that reveal the materials’ constitutive characteristics at strain rates between 600 and 2400 strain/s. Primary findings indicate that natural fibers in thermoset composites dissipate energy at lower levels of stress and higher strain than glass-reinforced composites. In the case of thermoplastic matrices, the effect on energy dissipation of natural fibers vs. conventional talc reinforcements is highly dependent on resin properties. Natural fibers in polypropylene homopolymer show improved reinforcement but have degraded energy dissipation compared to talc. Whereas in polypropylene copolymer, natural fibers result in improved energy dissipation compared to talc. These data are useful for proper design, analysis, and simulation of lightweight biocomposites.


2013 ◽  
Vol 740 ◽  
pp. 739-744 ◽  
Author(s):  
A.M. Mustafa Al Bakri ◽  
J. Liyana ◽  
M.N. Norazian ◽  
H. Kamarudin ◽  
C.M. Ruzaidi

Natural fibers reinforced polymer composites have gained more interest because of their biodegradable, light weight, less expensive sources, easy processing, high specific modulus and also environmentally friendly appeal. This paper presents an overview of a study aimed at showing on how the bio-composites which is bagasse fibers combined with resins as an alternative of bagasse-fiber-based composites panel. Transforming bagasse fibers into panel products provides a prospective solution. Bagasse-fiber-based composites offer potential as the core material replacing high density and expensive wood-based fiberboard. Biodegradable composites reinforced with bagasse fibres after being modified or treated by alkali treatment were prepared and also the mechanical properties were investigated. The bio-composites panel samples were processed by hot press machine. All panels were made with aspect ratios between bagasse fibers and polystyrene thermoplastics resins and also the sieve size of bagasse fibers which has short fibers and combination of short fiber and granules fibers. The polystyrene was added as a modified from natural fibers to determine the effect it had on physical and mechanical properties of the panel. Resin content level and panel density were very important in controlling the strength properties of the panels. Surface hardness value, compressive strength, bending strength and bending modulus values all increases in resin content level and panel density. Bagasse-based-panel products can be commercialize successfully if have good development of a cost manufacturing process on an establishment of a market base for the products.


2020 ◽  
pp. 325-327
Author(s):  
Sumesh K R ◽  
Kanthavel K ◽  
Saikrishnan G

The applications of natural fiber composites have enormously increased due to the high availability, eco-friendly nature and practical applications of the composites. In this review different fiber combinations using natural fiber and synthetic fibers have been investigated and found with interesting results. The hybrid nature of fiber reinforcement adds to the mechanical properties of polymer-based composites. The hybridization using more than one fiber reduces the surface deformations in the polymer matrix and enhanced the bonding ability of polymer composites. The alkali treatment was the effective surface treatment process for improving the cellulosic nature with good crystalline nature, good bonding ability with the polymer matrix, this adds to the properties of polymer-based composites. The crystallinity index of 43-68 % were observed in surface treated natural fibers.


2019 ◽  
Vol 18 (4) ◽  
pp. 117-130
Author(s):  
German Díaz-Ramírez ◽  
Fernanda Maradei ◽  
German Vargas-Linares

Even some natural resources, considered as waste, can be used for manufacturing a lot of products with enhanced sustainable properties, such as cellulosic bagasse. In this review was performed in order to gather state of the art about natural fibers structure, properties, and applications in polymer composites reinforcement, giving an approach of bagasse sugarcane fibers. The literature was done in different scientific databases;more than 50 papers wereanalyzed. The vegetable fibersare an extensive and multipurpose group, bagasse sugarcane fibers emerge as a remarkable renewable resource, due to their suitable properties and a large amount of available resources worldwide. Nevertheless, this kind of products require the use of adequacy physical and chemical treatments in order to achieve an adequate proper interaction with polymer matrices, additionally, other characteristics as the geometry and fiber content can influence the performance as reinforcements in composite materials.


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