Thermal and structural characterization of buriti fibers and their relevance in fabric reinforced composites

Demosthenes, Luana Cristyne da Cruz; Nascimento, Lúcio Fábio Cassiano; Monteiro, Sérgio Neves; Costa, Ulisses Oliveira; Filho, Fábio da Costa Garcia; Luz, Fernanda Santos da; Oliveira, Michelle Souza; Ramos, Flávio James Humberto Tommasini Vieira; Pereira, Artur Camposo; Braga, Fábio de Oliveira

doi:10.1016/j.jmrt.2019.10.036

Cited by 42 publications

(25 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Damage from heat may be considered one of the major drawbacks for the use of natural fibers reinforced polymeric composites in engineering applications [ 151 ]. Because of that, several researchers directed their efforts on the thermal assessment of NLFs and their polymer matrix composites [ 149 , 150 , 151 , 152 , 153 , 154 , 155 , 156 ]. However, improvement of thermal resistance has been considered somehow difficult to reach by traditional surface treatment of NLFs such as alkali, anhydride and silanation.…”

Section: Properties Of Graphene Incorporated Nlf Compositesmentioning

confidence: 99%

Graphene-Incorporated Natural Fiber Polymer Composites: A First Overview

et al. 2020

Self Cite

View full text Add to dashboard Cite

A novel class of graphene-based materials incorporated into natural lignocellulosic fiber (NLF) polymer composites is surging since 2011. The present overview is the first attempt to compile achievements regarding this novel class of composites both in terms of technical and scientific researches as well as development of innovative products. A brief description of the graphene nature and its recent isolation from graphite is initially presented together with the processing of its main derivatives. In particular, graphene-based materials, such as nanographene (NG), exfoliated graphene/graphite nanoplatelet (GNP), graphene oxide (GO) and reduced graphene oxide (rGO), as well as other carbon-based nanomaterials, such as carbon nanotube (CNT), are effectively being incorporated into NLF composites. Their disclosed superior mechanical, thermal, electrical, and ballistic properties are discussed in specific publications. Interfacial shear strength of 575 MPa and tensile strength of 379 MPa were attained in 1 wt % GO-jute fiber and 0.75 wt % jute fiber, respectively, epoxy composites. Moreover, a Young’s modulus of 44.4 GPa was reported for 0.75 wt % GO-jute fiber composite. An important point of interest concerning this incorporation is the fact that the amphiphilic character of graphene allows a better way to enhance the interfacial adhesion between hydrophilic NLF and hydrophobic polymer matrix. As indicated in this overview, two basic incorporation strategies have so far been adopted. In the first, NG, GNP, GO, rGO and CNT are used as hybrid filler together with NLF to reinforce polymer composites. The second one starts with GO or rGO as a coating to functionalize molecular bonding with NLF, which is then added into a polymeric matrix. Both strategies are contributing to develop innovative products for energy storage, drug release, biosensor, functional electronic clothes, medical implants, and armor for ballistic protection. As such, this first overview intends to provide a critical assessment of a surging class of composite materials and unveil successful development associated with graphene incorporated NLF polymer composites.

show abstract

Section: Properties Of Graphene Incorporated Nlf Compositesmentioning

confidence: 99%

Graphene-Incorporated Natural Fiber Polymer Composites: A First Overview

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…This behavior might be explained by the increased lignin content present in the films with increased hemicellulose. Lignin is a hydrophobic material and may reduce water absorption [16,17]. However, the solubility of the films is much higher than other polymeric materials generally used for package applications.…”

Section: Thickness and Solubility Of Hemicellulose Filmsmentioning

confidence: 99%

Preparation and Characterization of Hemicellulose Films from Sugarcane Bagasse

Braga

Poletto

2020

Materials

View full text Add to dashboard Cite

Hemicellulose is one of the most common polysaccharides found in nature. Its use as a green and sustainable raw material for industries is desirable. In this work, an alkaline-alcoholic method was used to extract hemicelluloses from sugarcane bagasse. After extraction, films with 2%, 3% and 4% (w/v) hemicellulose were produced. The films’ morphology, thickness, water solubility, tensile properties and thermal stability were evaluated. The Fourier Transform Infrared Spectroscopy (FTIR) results reveal that the method used removes the hemicellulose from bagasse with a low concentration of lignin. The films presented a compact and dense structure with uniformity in thickness associated with higher solubility in water. The increase in hemicellulose content increased tensile strength, but reduced the tensile strain of the films. Thermogravimetric analysis indicated that the increase in hemicellulose content reduced the films’ thermal stability. Thus, these films may act as useful, biodegradable and environmentally friendly materials for engineering applications.

show abstract

“…The decomposition reaction of the fiber components (cellulose, hemicellulose, and lignin) mainly occurs at low temperatures, around 200 °C, and imposes limitations to processing and application for the NLF-reinforced polymeric-matrix composites [ 37 ]. In the case of less known NLFs, it is important to study the thermal behavior of related polymer composites, in order to assure better processing and properties [ 38 , 39 ]. Among the less known NLFs, the several types of sedge only recently begun to be investigated [ 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 ] but have still not been cited in the aforementioned specialized reviews dedicated to technical properties of NLF polymer composites.…”

Section: Introductionmentioning

confidence: 99%

Promising Mechanical, Thermal, and Ballistic Properties of Novel Epoxy Composites Reinforced with Cyperus malaccensis Sedge Fiber

et al. 2020

Self Cite

View full text Add to dashboard Cite

Composites reinforced with natural lignocellulosic fibers (NLFs) are gaining relevance as the worldwide demand for renewable and sustainable materials increases. To develop novel natural composites with satisfactory properties, less common NLFs should also be investigated. Among these, the Cyperus malaccensis (CM), a type of sedge fiber, is already used in simple items like ropes, furniture, and paper, but has not yet been investigated as composite reinforcement for possible engineering applications. Therefore, the present work evaluated for the first time the properties of novel epoxy composites incorporated with 10, 20, and 30 vol.% of CM sedge fibers. Tensile, Izod-impact, and ballistic impact tests were performed, as well as Fourier transform infrared (FT-IR) spectroscopy and thermal analysis of the composites. Results disclosed a decrease (−55%) in tensile strengths as compared to the neat epoxy. However, the elastic modulus of the 30 vol.% sedge fiber composite increased (+127%). The total strain and absorbed ballistic energy did not show significant variation. The Izod impact energy of the 30 vol.% composite was found to be 181% higher than the values obtained for the neat epoxy as a control sample. An increase in both stiffness and toughness characterized a reinforcement effect of the sedge fiber. The thermal analysis revealed a slight decrease (−15%) in the degradation temperature of the CM sedge fiber composites compared to the neat epoxy. The glass-transition temperatures were determined to be in the range of 67 to 81 °C.

show abstract

Thermal and structural characterization of buriti fibers and their relevance in fabric reinforced composites

Cited by 42 publications

References 29 publications

Graphene-Incorporated Natural Fiber Polymer Composites: A First Overview

Graphene-Incorporated Natural Fiber Polymer Composites: A First Overview

Preparation and Characterization of Hemicellulose Films from Sugarcane Bagasse

Promising Mechanical, Thermal, and Ballistic Properties of Novel Epoxy Composites Reinforced with Cyperus malaccensis Sedge Fiber

Contact Info

Product

Resources

About