Processing techniques for natural- and wood-fibre composites

Błędzki, Andrzej K.; Jaszkiewicz, A.; Murr, M.; Sperber, V.E.; Lützendgrf, R.; Reußmann, T.

doi:10.1533/9781845694593.1.163

Cited by 29 publications

(15 citation statements)

References 12 publications

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“…Authors observed that increasing the content of fibers up to 30 wt% the composite's stiffness significantly increases as well as tensile and impact strengths with respect to neat PLA [127]. The same improvement in mechanical properties was reported by Choie and Lee [128] using ramie fibers and PLA resin as matrix.…”

Section: Pla Based Biocompositessupporting

confidence: 59%

Biocomposites: Influence of Matrix Nature and Additives on the Properties and Biodegradation Behaviour

Rosa¹,

Lenz²

2013

Biodegradation - Engineering and Technology

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Table 1. Classification of natural polymers based on their sources. There are several types of carbohydrates: monosaccharides, disaccharides, oligosaccharides and polysaccharides. The latter ones, of particular interest, are comprised of hundreds or thousands of monosaccharides, commonly glucose, forming linear chains, such as cellulose, or branched chains, as in starch and glycogen. For this chapter, cellulose and its derivatives, starch and chitosan will be presented as natural biodegradable polymers [10]. 2.1.1. Cellulose derivatives Cellulose acetate (CA), universally recognized as the most important organic ester of cellulose because of its extensive applications in fibres, plastics and coatings, is prepared by reacting cellulose with acetic anhydride using acetic acid as a solvent and perchloric acid or sulphuric acid as a catalyst. CA is a carbohydrate composed of β-glucose molecules that are covalently linked through β-1,4-glycosidic bonds, widely found in nature in algae and land plants which has been valued as a functional material. CA comes to meeting the diverse needs of today's society including biodegradability characteristics, its hydrophilic behaviour and biocompatibility [11]. Several applications for cellulose and its derivatives have been shown, for example: in paints, textiles, pharmaceuticals and beauty, fibers, ionic liquids, construction technology and so on [12, 13]. Cellulose esters for coating applications are nearly always used as miscible blends with acrylics, polyesters and other polymers. This is possible because of their ability to form hydrogen bonds through the presence of hydroxyl groups and the carboxyl groups of the ester. An increase in ester molecular weight increases the toughness and melting point but decreases the compatibility and solubility, whereas hardness and density are unaffected. Compatibility, solubility and the maximum non-volatile content all decrease as the ester molecular weight increases. The hydroxyl group content inversely affects the moisture resistance and toughness [11]. Ignácio et al. [14] evaluated the production of cellulosic polymer membranes based on cellulose acetate and thus advanced technology was brougth to be used in membranes for separation Biocomposites: Influence of Matrix Nature and Additives on the Properties and Biodegradation Behaviour

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Section: Pla Based Biocompositessupporting

confidence: 59%

Biocomposites: Influence of Matrix Nature and Additives on the Properties and Biodegradation Behaviour

Rosa¹,

Lenz²

2013

Biodegradation - Engineering and Technology

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“…Proper drying of fibers is necessary because moisture can alter properties and process parameters. Moisture in fibers increases void content and porosity in bio-composites, which affects the final mechanical properties [ 256 , 257 ].…”

Section: Processing Techniques Of Bio-compositesmentioning

confidence: 99%

A Review on Natural Fiber Bio-Composites, Surface Modifications and Applications

Zwawi

2021

Molecules

198

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Increased environmental concerns and global warming have diverted focus from eco-friendly bio-composites. Naturals fibers are abundant and have low harvesting costs with adequate mechanical properties. Hazards of synthetic fibers, recycling issues, and toxic byproducts are the main driving factors in the research and development of bio-composites. Bio-composites are degradable, renewable, non-abrasive, and non-toxic, with comparable properties to those of synthetic fiber composites and used in many applications in various fields. A detailed analysis is carried out in this review paper to discuss developments in bio-composites. The review covers structure, morphology, and modifications of fiber, mechanical properties, degradable matrix materials, applications, and limitations of bio-composites. Some of the key sectors employing bio-composites are the construction, automobile, and packaging industries. Furthermore, bio-composites are used in the field of medicine and cosmetics.

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“…Compression molding is in particular an established and proven technique for the production of extensive, light weight, and high class interior parts in medium and luxury cars for it is cost effectiveness, being suited for light construction, good crash resistance, and deformation properties. In this process, flat semifinished products or hybrid fleeces that are either larger or same size as the form are cut exactly to the size of the desired part which together with the matrix are put into the preheating station (mold) heated to the melting temperature of the matrix material that is subsequently guided into the pressure tool unit, condensed, and reshaped [76]. Different auto makers have modified this process to optimize the positives.…”

Section: Manufacturing Processes Used In Making Biocompositesmentioning

confidence: 99%

Review of the applications of biocomposites in the automotive industry

et al. 2016

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The article provides an overview of biocomposite application in the automotives via a documentation of their history, chronology and progressive steps taken to break into the production lines of a number of key auto makers. It offers a detailed analysis of the key factors that have motivated the research and subsequent adoption of biocomposites; taking a peek at the advantages, disadvantages, and challenges experienced in the process. Auto makers and parts suppliers that have been a force behind this campaign, have also been accorded a fair share in the article. Future projection of role of these materials in the industry; with the ideas well dressed in form of bio concept cars caps up the paper. Automotive refers to; passenger cars, sport utility vehicles, vans, trucks, buses, and recreational vehicles. POLYM. COMPOS., 38:2553–2569, 2017. © 2016 Society of Plastics Engineers

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Processing techniques for natural- and wood-fibre composites

Cited by 29 publications

References 12 publications

Biocomposites: Influence of Matrix Nature and Additives on the Properties and Biodegradation Behaviour

Biocomposites: Influence of Matrix Nature and Additives on the Properties and Biodegradation Behaviour

A Review on Natural Fiber Bio-Composites, Surface Modifications and Applications

Review of the applications of biocomposites in the automotive industry

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