Development and characterization of polyvinyl alcohol filled with date palm midrib powder

Umar, Yunusa; Haque, Sk Manirul; Al‐Harthi, Mamdouh A.; Sadique, Zakariya; Ashwaq, Omar; Obra, Edwin; Sreekumar, P.A.

doi:10.1177/08927057211063395

Cited by 3 publications

(1 citation statement)

References 46 publications

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“…The first stage, the powder mass loss (less than 10%) of CNF between 45°C and 150°C is mainly due to the evaporation of water and volatile substances in CNF. 52 The second stage, In Figure 9(b), the peak in Curve 2-B at around 250°C marks the beginning of the rapid pyrolysis stage. This phase, a small amount of depolymerization, internal recombination and “glass transition” occur in the biomass raw materials, 53 which release some small molecular compounds to prepare for rapid thermal degradation.…”

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of nanocellulose fiber (CNF) by biological enzymatic method

Wang

Song

Cui³

et al. 2023

Journal of Thermoplastic Composite Materials

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In this paper, using Styphnolobium japonicum, Cryptomeria fortunei and Pinus yunnanensis as raw materials, cellulose (CE) was first extracted by chemical method (CM1) and biological enzymatic method 2 (BM2), and then further prepared into nanocellulose fiber (CNF) by biological enzymatic method 1(CPM (CPM stands for cellulase and pectinase)). The CE and CNF were characterized by FTIR, XRD, SEM, DSC and TG. The results showed that the CNF prepared by CM1-CPM was cellulose type II, CNF prepared by BM2-CPM was cellulose type I. The best crystallinity of the CNF prepared by CM1-CPM reached 74.1% ( C. fortunei CNF), the best yield was 24.0% ( S. japonicum CNF) and the minimum average diameter was 62.6 nm ( C. fortunei CNF). However, the best crystallinity of CNF prepared by BM2-CPM reached 80.1% ( C. fortunei CNF), the best yield was 27.4% ( C. fortunei CNF), and the minimum average diameter was 31.6 nm ( C. fortunei CNF). And also, the thermal degradation analysis of the CNF prepared from the three raw materials revealed that the CNF prepared by BM2-CPM had better thermal degradability. Finally, the thermal stability analysis of the C. fortunei CNF was carried out, and it was found that the residual mass of CNF prepared by BM2-CPM was 48%, while the residual mass of C. fortunei CNF prepared by BM1-CPM was 22%, which showed the C. fortunei CNF prepared by BM2-CPM had better thermal stability. Therefore, the properties of nanocellulose prepared by BM2-CPM are optimal.

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Section: Resultsmentioning

confidence: 99%

Preparation and characterization of nanocellulose fiber (CNF) by biological enzymatic method

Wang

Song

Cui³

et al. 2023

Journal of Thermoplastic Composite Materials

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Potential of Date Palm Fibers (DPFs) as a Sustainable Reinforcement for Bio‐ Composites and its Property Enhancement for Key Applications: A Review

Dhakal,

Khan,

Alnaser

et al. 2024

Macro Materials & Eng

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This article presents a comprehensive review of the advancements in the use of Date Palm Fiber (DPF) reinforced composites, highlighting their mechanical, thermal, and morphological properties and the enhancements achieved through various modification techniques. Date palm fibers, a sustainable and biodegradable resource, have garnered significant interest due to their potential in reducing environmental impact across several key industries, including building and construction, automotive, and packaging. The review discusses the effects of hybrid approaches and physical and chemical treatments on the mechanical properties of DPF composites, demonstrating improvements in tensile strength, elasticity, and flexural strength through optimized fiber‐matrix bonding and reduced moisture absorption. Thermal behavior analyses through Thermogravimetric Analysis (TGA), Dynamic Mechanical Analysis (DMA), and thermal conductivity underscore the composites’ suitability for applications requiring high thermal stability and conductivity for insulation applications. Morphological studies reveal that surface‐treated fibers integrate more effectively with various polymeric matrices, leading to enhanced composite performance. The practical applications of DPF composites are explored, emphasizing their role in promoting sustainable manufacturing practices. Challenges such as scalability, cost‐efficiency, and performance consistency are addressed, alongside future perspectives that suggest a promising direction for further research and technological development in the field of natural fiber composites. This review aims to solidify the foundation for ongoing advancements and increase the adoption of DPF composites in commercial applications.

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Valorisation of Agricultural Residue Bio-Mass Date Palm Fibre in Dry-Blended Polycaprolactone (PCL) Bio-Composites for Sustainable Packaging Applications

Saifullah,

Chacko,

Dhakal

et al. 2024

Waste Biomass Valor

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Purpose This study experimentally developed and characterised dry-blended Polycaprolactone (PCL)/date palm fibre biodegradable composites for sustainable packaging applications. Date palm fibres are collected from date palm trees as by-products or waste materials. They will be valorised in bio-composite application to promote fibre-based sustainable packaging items over their non-biodegradable synthetic polymer based conventional packaging products. In the dry-blending process, fibre and polymer are mixed with a shear mixer, while, in a melt-blending process, an extruder is used to extrude fibre/polymer blends after applying heating and high shear pressure to melt and mix polymer with fibres. Dry-blending process offers many comparative advantages, such as less equipment, steps, cost, process degradation, energy consumption and hence, lower harmful environmental emissions; while, a proper fibre/polymer mixing is a challenge and it needs to be achieved properly in this process. Therefore, it is important to understand the effects of dry-blending process on manufacturing of PCL/date palm fibre bio-composites for packaging applications, before promoting the dry-blending as a suitable alternative to the melt-blending process. Methods Short chopped fibres were grinded as powders and dry-blended at a ratio of (0 − 10%) (w/w) with PCL polymer using hand and a shear mixer for 30 min, following a compression moulding process to produce bio-composite samples. Tensile, water contact angle, SEM, TGA, DSC and DMA tests and analysis were conducted. The dry-blended PCL/date palm fibre composites’ properties were compared with reported melt-blended samples’ results found in literature. Results Dry-blended samples showed an increase in tensile modulus values (up-to 20%) with fibre inclusion and these values were found close to the melt-blended samples in the literature. Tensile strength and strain values were reduced which could be related to the poor fibre/polymer interface. Fibre addition affected the thermal, thermo-mechanical and crystallisation processes in PCL polymer matrix. Conclusion Dry-blending is capable of producing bio-composites with a very comparable properties to melt-blended counterparts, although a more details study is needed to conduct in future. The results of this study, could be used carefully to design dry-blended PCL/date palm fibre bio-composites for possible packaging applications. The irregular fibre distribution in dry-blended samples could be improved in different ways which should be investigated in future. Graphical Abstract

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Development and characterization of polyvinyl alcohol filled with date palm midrib powder

Cited by 3 publications

References 46 publications

Preparation and characterization of nanocellulose fiber (CNF) by biological enzymatic method

Preparation and characterization of nanocellulose fiber (CNF) by biological enzymatic method

Potential of Date Palm Fibers (DPFs) as a Sustainable Reinforcement for Bio‐ Composites and its Property Enhancement for Key Applications: A Review

Valorisation of Agricultural Residue Bio-Mass Date Palm Fibre in Dry-Blended Polycaprolactone (PCL) Bio-Composites for Sustainable Packaging Applications

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