Comparison of Different Hydrophobic Treatments for the Durability Improvement of Palmyra Natural Fiber Composites under Hydrothermal Ageing Environments

Jain, Deepak; Sekhon, Harpreet; Bera, Tarun Kumar; Jain, Rajat

doi:10.1080/15440478.2019.1588828

Cited by 13 publications

(7 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This demonstrates that the treated cellulose was more hydrophilic, possibly due to the increased fibrillation, as observed in SEM images, with exposure of a higher amount of hydroxyl groups from the cellulose chains. These OH groups may have caused the formation of more hydrogen bonds between fibers, resulting in the hornification 32 of the fibers after more explosion cycles. Indeed, the sample that remained 70 min in the reactor (EBETF) suffered a slight reduction in the intensity of these bands.…”

Section: Resultsmentioning

confidence: 99%

Microcrystalline cellulose treated by steam explosion and used for thermo-mechanical improvement of polypropylene

Tienne

Cordeiro

Brito

et al. 2020

Journal of Composite Materials

View full text Add to dashboard Cite

The use of cellulose fibers derived from renewable resources as reinforcement in polymeric composites provides positive environmental benefits with respect to disposal and raw material savings. Microcrystalline cellulose is a regenerated cellulose material that is free of lignin and hemicellulose, widely used in various applications. Recently, there has been enormous interest in producing polymer nanocomposites using cellulose nanofibers as reinforcement. Moreover, the steam explosion process is an ecofriendly method to modify cellulose fibers by inducing fibrillation, allowing the production of nanofibers. Fibrillation of microcrystalline cellulose using steam explosion process as the only cellulose treatment process was not yet studied in the literature. In the present work, steam explosion process was applied to commercial microcrystalline cellulose and the obtained fibers were characterized and employed in composites with polypropylene for evaluation of the thermal, mechanical, and morphological properties in relation to the matrix. The results showed that this process promoted partial fibrillation to nanosized diameter, and an increase in crystalline degree and thermal stability of the original fiber. As for the polypropylene/cellulose composites in the absence of compatibilizer, there was an increase of thermal degradation temperature and mechanical properties measured by dynamic-mechanical analysis in comparison with pure polypropylene.

show abstract

Section: Resultsmentioning

confidence: 99%

Microcrystalline cellulose treated by steam explosion and used for thermo-mechanical improvement of polypropylene

Tienne

Cordeiro

Brito

et al. 2020

Journal of Composite Materials

View full text Add to dashboard Cite

show abstract

“…[ 323 ] Stearic acid has a tendency to limit the water uptake behavior in fibers by elimination of OH groups and enhance the moisture resistance properties. [ 324,325 ] Palmyra fiber composites treated with 4% SA provides an edge over alkaline treatment with minimal water absorption and is highly durable in hydrothermal conditions.…”

Section: Resolving Challenges With Modification Of Fiber and Matrixmentioning

confidence: 99%

Modification of Fibers and Matrices in Natural Fiber Reinforced Polymer Composites: A Comprehensive Review

ArunRamnath

Kushvaha

et al. 2022

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Application of natural fiber-polymer composites (NFPCs) in different industrial applications provides competitive edge due to their lightweight, higher specific mechanical properties than glass fibers, sustainability, and lower cost involved in production. There are certain challenges associated with natural fibers and their reinforcement in composites such as poor bonding between the fibers and matrix due to their contradictory nature of characteristics, moisture absorption, lower thermal properties, and poor interfacial adhesion between the natural fiber and polymer matrix. The challenges involved in NFPCs need to be overcome to produce materials with relatively equivalent properties to those of conventional composites and other metallic structures. Several researchers around the globe have conducted investigations with the primary attention being paid to the modification of natural fibers and matrix by employing surface treatments and other chemical treatment methods. In order to address the need for eco-friendly and sustainable materials in different domains, a comprehensive review on natural fibers and their sources, available matrix materials, modification techniques, mechanical and thermal properties of NFPCs, is needed for better understanding of the behavior of NFPCs. This work provides the information and holistic view of natural fiber-reinforced composites based on the results obtained from modification techniques, with the view of focusing the review in terms of different chemical and physical treatment techniques, modification of fibers and matrix, and enhanced mechanical and thermal properties in the composites.

show abstract

“…7,8 Given that higher temperatures cause diffusing species to enter the bulk much more quickly and speed up degradation, the combined impacts of temperature and moisture exposure are more damaging. 9,10 By using the appropriate chemical and surface treatment techniques, the characteristics of natural fibres can be enhanced. 11 The overall mechanical and physical property array of several natural fibres has recently been improved using a number of pre-treatment methods which includes alkali, ultrasonic and plasma treatment.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of the cyclic hornification on the hygromechanical and surface characteristics of rice stubble agriculture waste

Somal,

Jain,

Bhowmick

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

Self Cite

View full text Add to dashboard Cite

An indiscriminate burning of rice stubble waste in the farms poses a major environmental challenge worldwide. The stubble waste can be utilized to fabricate the natural fibre polymer composites for several mild- to low-load-bearing applications in the civil construction. However, the susceptibility to long-term environmental moisture limits the use of stubble waste. In this work, we analyse the effect of water and alkali hornification as a pre-treatment technique on the moisture uptake, surface roughness, wettability and mechanical strength of rice stubble straw, and the results are compared with untreated stubble straw. The water retention value was reduced by ∼49% and ∼60% after four hornification cycles under the water and alkali mediums, respectively. Preliminary visual and microstructural assessments revealed the reduction in hydrophilic cellulose and lignin contents with both types of pre-treatments. It is observed that in comparison to alkali hornification, the water hornification technique leads to a significant improvement in hygromechanical characteristics of stubble straw. When compared to untreated stubble, one cycle of water hornification leads to approximately ∼16% reduction in the moisture uptake, and ∼42% increase in the tensile strength. On the other hand, the alkali hornification resulted in the improvement in tensile strength by ∼36%, but it led to an increased water uptake. The results indicated that the thinning and surface roughening of the fibres is primarily caused by the removal of amorphous contents during the pre-treatment. For an improved environmental durability with better mechanical strength, it is recommended to do the pre-treatment of the stubble waste using one water hornification cycle before it is used further.

show abstract

Comparison of Different Hydrophobic Treatments for the Durability Improvement of Palmyra Natural Fiber Composites under Hydrothermal Ageing Environments

Cited by 13 publications

References 29 publications

Microcrystalline cellulose treated by steam explosion and used for thermo-mechanical improvement of polypropylene

Microcrystalline cellulose treated by steam explosion and used for thermo-mechanical improvement of polypropylene

Modification of Fibers and Matrices in Natural Fiber Reinforced Polymer Composites: A Comprehensive Review

The effect of the cyclic hornification on the hygromechanical and surface characteristics of rice stubble agriculture waste

Contact Info

Product

Resources

About