Preparation and physical properties of the biocomposite, cellulose diacetate/kenaf fiber sized with poly(vinyl alcohol)

Lee, Chang Kyu; Cho, Mi Suk; Kim, In Hoi; Lee, Youngkwan; Nam, Jae Do

doi:10.1007/s13233-010-0611-0

Cited by 16 publications

(14 citation statements)

References 20 publications

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“…The removal of these compounds may have caused changes in the structure of the fibers. As a result, the reordering of the cellulose fibers and, because of that, the reduction in the surface volume may have increased the density …”

Section: Resultsmentioning

confidence: 99%

Effects of fiber‐surface treatment on the properties of hybrid composites prepared from oil palm empty fruit bunch fibers, glass fibers, and recycled polypropylene

Islam

Gupta

Rivai

et al. 2015

J of Applied Polymer Sci

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In this article, we report the effects of hybridization and fiber-surface modification on the properties of hybrid composites prepared from recycled polypropylene (RPP), coupling agents, oil palm empty fruit bunch (EFB), and glass fibers through a twinscrew extruder and an injection-molding machine. The surface of the EFB fibers was modified with different concentrations (10-15 wt %) and temperatures (60-908C) of alkali solutions. The structure and morphology of the fibers were observed with the help of Fourier transform infrared spectroscopy and scanning electron microscopy. Different types of composites were fabricated with untreated, alkali-treated, and heat-alkali-treated fibers. Comparative analysis of the mechanical, structural, morphological, and thermal properties of the composites was carried out to reveal the effects of treatment and hybridization. The analysis results reveal that composites prepared from the alkali-treated (in the presence of heat) fibers show improved mechanical, thermal, and morphological properties with a remarkably reduced water absorption. Additionally, the crystallinity of RPP also increased with the development of biaxial crystals. The improvement of various properties in relation to the structures and morphologies of the composites is discussed.

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Section: Resultsmentioning

confidence: 99%

Effects of fiber‐surface treatment on the properties of hybrid composites prepared from oil palm empty fruit bunch fibers, glass fibers, and recycled polypropylene

Islam

Gupta

Rivai

et al. 2015

J of Applied Polymer Sci

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“…This increased interfacial adhesion through reduced fiber size (diameter) could permit more of the fiber to occupy a lesser volume. Thus, the overall bulk density of the composites based on the treated fibers could, therefore, be higher than those of the composites based on untreated fibers . We also found that the PSTFCs possessed higher densities than the PUTFCs.…”

Section: Resultsmentioning

confidence: 68%

“…This might have led to some structural modifications within the fiber and favored the crystalline cellulose, causing it to rearrange in a more ordered structural manner. The reordering could, therefore, increase the bulk density by reducing the surface volume . As for the lesser density of the STFs compared to the UTFs, the reason for this could be associated with some direct condensation reaction; this might have occurred between the silane (PDMS) and cellulose OH groups of the fiber, as reported elsewhere for silanized jute fibers .…”

Section: Resultsmentioning

confidence: 80%

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Effects of poly(dimethyl siloxane) on the water absorption and natural degradation of poly(lactic acid)/oil‐palm empty‐fruit‐bunch fiber biocomposites

Akindoyo

Beg

Ghazali

et al. 2015

J of Applied Polymer Sci

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Composites were fabricated with poly(lactic acid) and oil‐palm empty‐fruit‐bunch (EFB) fibers with extrusion; this was followed by an injection‐molding technique. Before compounding, the surface of the fiber was modified through ultrasound and poly(dimethyl siloxane) (PDMS). The influences of the ultrasound and PDMS on the water absorption and biodegradability of the composites were investigated. Additionally, the composites were buried under soil for 6 months, and their biodegradability was assessed through different characterization techniques, such as tensile testing and weight loss and diffussability measurement. The changes on the surface of the fibers due to treatment were examined by scanning electron microscopy analysis, and the influences on the biodegradability of the composites were observed. Functional group analysis and possible changes before and after degradation were also examined by a Fourier transform infrared spectrophotometric technique. The results analyses revealed that the treatment of fibers improved the density of the fibers and reduced the water uptake of the composites. The overall weight loss due to soil burial testing was found to be maximum for the untreated‐fiber‐based composites (6.8%), whereas the ultrasound‐ and silane‐treated composites showed the minimum value of weight loss (3.7%). The deterioration of the tensile strength due to degradation was found to be at a maximum for the untreated‐fiber‐based composite (27%), whereas the ultrasound‐ and silane‐treated‐fiber‐based composites showed a minimum value of 8%. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42784.

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“…Kenaf fiber sized with poly(vinyl alcohol) was used to reinforce CDA, resulting in improved mechanical and thermal properties of CDA. Moreover, the tensile strength and elastic modulus of the composites increased by nearly two and three times, respectively, when the kenaf fiber content was 30 wt% [ 17 ]. Although the blending modification could improve the material’s properties, some problems, including poor compatibility, plasticizer precipitation, and degradation, still need urgent attention [ 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Cellulose Diacetate-Graft-Polylactide via Solvent-Free Melt Ring-Opening Graft Copolymerization

Zhao

Li²,

Wu³

et al. 2022

Polymers

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Cellulose diacetate (CDA) and L-lactide (L-LA) were used to prepare CDA−g−PLLA with a low glass transition temperature under different process conditions. Given the high glass transition temperature (Tg) of CDA, the thermal processing performance of CDA is poor, which greatly limits its application fields. To decrease the Tg of CDA, graft copolymerization was used in this research. A CDA−g−PLLA graft copolymer was synthesized by grafting CDA with L-LA under different reaction conditions using stannous octanoate as the catalyst and variations in the grafting rate under different reaction conditions were compared. The chemical structure and crystal structure of the CDA−g−PLLA were investigated, and thermal properties were also studied. The results showed that the grafting rate was the highest at the L-LA/CDA mass ratio of 4:1 under a reaction temperature of 150 °C for 90 min, and no poly-L-lactide (PLLA) homopolymer was found among the CDA−g−PLLA graft copolymers after purification. The Tg of CDA−g−PLLA was 54.2 °C, and the initial temperature of weightlessness of CDA−g−PLLA was 218.7 °C. The regularity of the original CDA molecular chains was destroyed after grafting PLLA molecular chains. In this research, we investigated the optimal grafting conditions for CDA−g−PLLA and the CDA−g−PLLA had a low Tg, which improves the thermal processing performance of CDA and broadens its application prospects in the industry.

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Preparation and physical properties of the biocomposite, cellulose diacetate/kenaf fiber sized with poly(vinyl alcohol)

Cited by 16 publications

References 20 publications

Effects of fiber‐surface treatment on the properties of hybrid composites prepared from oil palm empty fruit bunch fibers, glass fibers, and recycled polypropylene

Effects of fiber‐surface treatment on the properties of hybrid composites prepared from oil palm empty fruit bunch fibers, glass fibers, and recycled polypropylene

Effects of poly(dimethyl siloxane) on the water absorption and natural degradation of poly(lactic acid)/oil‐palm empty‐fruit‐bunch fiber biocomposites

Synthesis and Characterization of Cellulose Diacetate-Graft-Polylactide via Solvent-Free Melt Ring-Opening Graft Copolymerization

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