Gray optimization of process parameters of surface modification of coconut sheath reinforced polymer composites

2013 ◽  
Vol 33 (7) ◽  
pp. 665-672 ◽  
Author(s):  
Irullappasamy Siva ◽  
Jebas Thangaih Winowlin Jappes ◽  
Pandian Pitchipoo ◽  
Sandro Campos Amico ◽  
Erumaipatty Rajagounder Nagarajan ◽  
...  
Keyword(s):  
Surface Modification ◽  
Natural Fiber ◽  
Treatment Time ◽  
Natural Fibers ◽  
Technical Information ◽  
Interfacial Strength ◽  
Bath Temperature ◽  
Reinforced Polymer ◽  
Optimization Of Process Parameters ◽  
Selection Of

Abstract Surface modification of natural fiber may greatly enhance the mechanical interlocking between fiber and matrix. Although there are many reports on surface modification of natural fibers, little technical information is available to enable the selection of optimized surface modification conditions. In this work, treatment parameters, such as bath temperature, agent concentration, and treatment time, are optimized to achieve higher interfacial adhesion. The effect of these parameters on flexural and impact strength is investigated by applying gray relational techniques. Experimental results show that NaOH concentration and treatment time are significant variables which improve interfacial strength, while NaOH bath temperature appears less important.

Effect of Mechanical Properties on Various Surface Treatment Processes of Banana/Cotton Woven Fabric Vinyl Ester Composite

2017 ◽  
Vol 867 ◽  
pp. 41-47 ◽  
Author(s):  
Chitra Umachitra ◽  
N.K. Palaniswamy ◽  
O.L. Shanmugasundaram ◽  
P.S. Sampath
Keyword(s):  
Mechanical Properties ◽  
Composite Structures ◽  
Natural Fiber ◽  
Natural Fibers ◽  
Surface Treatments ◽  
Fiber Reinforced Polymer ◽  
Woven Fabric ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Structural Applications

Natural fibers have been used to reinforce materials in many composite structures. Many types of natural fibers have been investigated including flax, hemp, ramie, sisal, abaca, banana etc., due to the advantage that they are light weight, renewable resources and have marketing appeal. These agricultural wastes can also be used to prepare fiber reinforced polymer hybrid composites in various combinations for commercial use. Application of composite materials in structural applications has presented the need for the engineering analysis. The present work focuses on the fabrication of polymer matrix composites by using natural fibers like banana and cotton which are abundant in nature and analysing the effect of mechanical properties of the composites on different surface treatments on the fabric. The effect of various surface treatments (NaOH, SLS, KMnO4) on the mechanical properties namely tensile, flexural and impact was analyzed and are discussed in this project. Analysing the material characteristics of the compression moulded composites; their results were measured on sections of the material to make use of the natural fiber reinforced polymer composite material for automotive seat shell manufacturing.

scholarly journals Structural Evaluation on Sugarcane Bagasse Treated Using Sodium and Calcium Hydroxide

2019 ◽  
Vol 130 ◽  
pp. 01018
Author(s):  
Juliana Anggono ◽  
Hariyati Purwaningsih ◽  
Suwandi Sugondo ◽  
Steven Henrico ◽  
Sanjaya Sewucipto ◽  
...  
Keyword(s):  
Weight Loss ◽  
Calcium Hydroxide ◽  
Structural Changes ◽  
Natural Fiber ◽  
Treatment Time ◽  
Alkali Treatment ◽  
Natural Fibers ◽  
Additional Treatment ◽  
Structural Evaluation ◽  
By Products

Greater interest in recent years to the increase demand in using natural fiber reinforcement of polymers is to comply with the increasing stringent international protocols related to climate change and environmental awareness. Many studies have reported the development of renewable and biodegradable agricultural by-products as reinforcement fibers for biocomposites. One of the essential factors in producing strong biocomposites is the properties prepared from the natural fibers which results from the alkalitreatment given. This research aims to evaluate the effect of different treatment duration on structural changes on sugarcane after alkali treatment using sodium hydroxide (NaOH) and calcium hydroxide (Ca(OH)2) solutions. Calcium hydroxide was used as comparative solution in search for milder and more environmental friendly alkali solution as an alternative solution of NaOH. Fourier Transform Infrared (FTIR) confirmed the major removal of lignin and minor of hemicellulose. It shows that the structure did not change considerably with the additional treatment time. The weight loss measurement after each treatmentshows a higher weight loss with the treatment with NaOH (40.5 % to 57.75 %) than the weight loss after Ca(OH)2 treatment (25 % to 46 %). Scanning electron microscope (SEM) observed the morphology changes onthe fiber from both treatments.

scholarly journals A Review on Application of Single and Hybrid Fiber Reinforced Polymer Composites

2020 ◽  
pp. 325-327
Author(s):  
Sumesh K R ◽  
Kanthavel K ◽  
Saikrishnan G
Keyword(s):  
Polymer Composites ◽  
Polymer Matrix ◽  
Natural Fiber ◽  
Alkali Treatment ◽  
Natural Fibers ◽  
Crystallinity Index ◽  
Practical Applications ◽  
Synthetic Fibers ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites

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.

scholarly journals Composites with Natural Fibers and Conventional Materials Applied in a Hard Armor: A Comparison

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1920 ◽  
Author(s):  
Fernanda Santos da Luz ◽  
Fabio da Costa Garcia Filho ◽  
Michelle Souza Oliveira ◽  
Lucio Fabio Cassiano Nascimento ◽  
Sergio Neves Monteiro
Keyword(s):  
Natural Fiber ◽  
Epoxy Composite ◽  
Natural Fibers ◽  
Ballistic Performance ◽  
Synthetic Fibers ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites ◽  
National Institute Of Justice ◽  
Additional Protection ◽  
Armor System

Natural-fiber-reinforced polymer composites have recently drawn attention as new materials for ballistic armor due to sustainability benefits and lower cost as compared to conventional synthetic fibers, such as aramid and ultra-high-molecular-weight polyethylene (UHMWPE). In the present work, a comparison was carried out between the ballistic performance of UHMWPE composite, commercially known as Dyneema, and epoxy composite reinforced with 30 vol % natural fibers extracted from pineapple leaves (PALF) in a hard armor system. This hard armor system aims to provide additional protection to conventional level IIIA ballistic armor vests, made with Kevlar, by introducing the PALF composite plate, effectively changing the ballistic armor into level III. This level of protection allows the ballistic armor to be safely subjected to higher impact projectiles, such as 7.62 mm caliber rifle ammunition. The results indicate that a hard armor with a ceramic front followed by the PALF/epoxy composite meets the National Institute of Justice (NIJ) international standard for level III protection and performs comparably to that of the Dyneema plate, commonly used in armor vests.

scholarly journals A Review on Natural Fiber Reinforced Polymer Composite and Its Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
Layth Mohammed ◽  
M. N. M. Ansari ◽  
Grace Pua ◽  
Mohammad Jawaid ◽  
M. Saiful Islam
Keyword(s):  
Water Absorption ◽  
Polymer Composites ◽  
Chemical Treatment ◽  
Natural Fiber ◽  
Fiber Type ◽  
Natural Fibers ◽  
Fiber Reinforced Polymer ◽  
Mechanical And Thermal Properties ◽  
Fiber Reinforced ◽  
Reinforced Polymer

Natural fibers are getting attention from researchers and academician to utilize in polymer composites due to their ecofriendly nature and sustainability. The aim of this review article is to provide a comprehensive review of the foremost appropriate as well as widely used natural fiber reinforced polymer composites (NFPCs) and their applications. In addition, it presents summary of various surface treatments applied to natural fibers and their effect on NFPCs properties. The properties of NFPCs vary with fiber type and fiber source as well as fiber structure. The effects of various chemical treatments on the mechanical and thermal properties of natural fibers reinforcements thermosetting and thermoplastics composites were studied. A number of drawbacks of NFPCs like higher water absorption, inferior fire resistance, and lower mechanical properties limited its applications. Impacts of chemical treatment on the water absorption, tribology, viscoelastic behavior, relaxation behavior, energy absorption flames retardancy, and biodegradability properties of NFPCs were also highlighted. The applications of NFPCs in automobile and construction industry and other applications are demonstrated. It concluded that chemical treatment of the natural fiber improved adhesion between the fiber surface and the polymer matrix which ultimately enhanced physicomechanical and thermochemical properties of the NFPCs.

Tensile Properties of Natural Fiber Reinforced Polymers: An Overview

2015 ◽  
Vol 766-767 ◽  
pp. 133-139 ◽  
Author(s):  
Jeswin Arputhabalan ◽  
K. Palanikumar
Keyword(s):  
Tensile Properties ◽  
Polymer Composites ◽  
Natural Fiber ◽  
Natural Fibers ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced Polymers ◽  
Fiber Reinforced ◽  
Reinforced Polymers ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites

This paper deals with tensile properties of natural fiber reinforced polymer composites. Natural fibers have recently found increasing use in various fields as an alternative to synthetic fiber reinforced polymers. Due to this they have become attractive to engineers, researchers and scientists. Natural fibers are replacing conventional fibers such as glass, aramid and carbon due to their eco-friendly nature, lesser cost, good mechanical properties, better specific strength, bio-degradability and non-abrasive characteristics. The adhesion between the fibers and the matrix highly influence the tensile properties of both thermoset and thermoplastic natural fiber reinforced polymer composites. In order to enhance the tensile properties by improving the strength of fiber and matrix bond many chemical modifications are normally employed. In most cases the tensile strengths of natural fiber reinforced polymer composites are found to increase with higher fiber content, up to a maximum level and then drop, whereas the Young’s modulus continuously increases with increasing fiber loading. It has been experimentally found that tensile strength and Young’s modulus of reinforced composites increased with increase in fiber content [1].

scholarly journals Recent Eco-Friendly Developments in Personal Protective Clothing Materials for Reducing Plastic Pollution: A Review

2019 ◽  
Vol 9 (2) ◽  
pp. 4012-4018
Author(s):  
A. H. Memon ◽  
M. H. Peerzada ◽  
K. Muhammad ◽  
S. A. Memon ◽  
S. A. Mangi ◽  
...  
Keyword(s):  
Environmental Economic ◽  
Protective Clothing ◽  
Natural Fiber ◽  
Natural Fibers ◽  
Legal Aspects ◽  
High Tech ◽  
Plastic Pollution ◽  
Environment Friendly ◽  
Plastic Content ◽  
Selection Of

Due to the industrialization increase in the 20th century, the level of hazards for public health and the demand for personnel protective clothing (PPC) have increased. The area of PPC has been steered to high tech equipment made from plastic-based materials, which are derived from non-renewable sources and have a long life cycle expanding from hundreds to thousands of years, after their end of useful life. This paper reviews the information related to conventional plastic-based fibers, their properties, advantages, disadvantages, and applications in the battlefield, industry, automobiles, etc. This paper provides a basis for the selection of natural fibers and the replacement of conventional plastic-based fibers to reduce the plastic content in protective clothing or other composites. A comparative analysis of technological, environmental, economic and legal aspects of plastic-based and environment-friendly natural fibers is presented. Natural fiber-based composite protective clothing is found to be environment-friendly and considered to have prospects for the future due to its comparative technological, environmental, economic and legal advantages.

Tensile and flexural properties of natural fiber reinforced polymer composites: A review

2018 ◽  
Vol 37 (24) ◽  
pp. 1435-1455 ◽  
Author(s):  
Mohammad ZR Khan ◽  
Sunil K Srivastava ◽  
MK Gupta
Keyword(s):  
Polymer Composites ◽  
Natural Fiber ◽  
Natural Fibers ◽  
Surface Treatments ◽  
Fiber Reinforced Polymer ◽  
Flexural Properties ◽  
Fiber Reinforced ◽  
Synthetic Fibers ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites

In recent years, researchers and scientists are facing problems in terms of environmental imbalance and global warming owing to numerous use of composite materials prepared by synthetic fibers and petrochemical polymers. Hence, an increasing attention has been devoted to the research and development of polymer composites reinforced with the natural fibers. The natural fibers are the most suitable alternative of synthetic fibers due to their biodegradability, eco-friendliness and acceptable mechanical properties. The natural fibers are attracting the researchers and scientists to exploit their properties by amalgamating them with the polymer. The properties of natural fiber reinforced polymer composites mainly depend upon various factors such as properties of fibers and matrices, fiber loading percentage, size and orientation of fibers, stacking sequences, degree of interfacial bonding, fiber surface treatments, hybridization and incorporation of additives and coupling agents. Tensile and flexural tests are the most important investigations to predict the applications of the materials. A good number of research has been carried out on tensile and flexural properties of natural fiber reinforced polymer composites. In this paper, a review on tensile and flexural properties of natural fiber reinforced polymer composites in terms of effects of fiber weight fraction, geometry, surface treatments, orientations and hybridization is presented. Moreover, recent applications of natural fiber reinforced polymer composites are also presented in this study.

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