Investigations on fiber–matrix properties of heat-treated and UV-treated regenerated cellulose fibers

Kahl, Christian; Gemmeke, Nicole; Bagnucki, Julius; Heim, Hans-Peter

doi:10.1016/j.compositesa.2021.106669

Cited by 12 publications

(19 citation statements)

References 23 publications

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“…The results showed that in a GF-reinforced compound, the fibers are shortened to such an extent that almost no fibers can be stressed to breakage by the load transfer of the matrix. In RCF, it is just 4% of the fibers that theoretically break when the composite fails [9]. For this reason, this study demonstrates the interaction of GF and RCF through fiber pull-outs.…”

Section: Introductionmentioning

confidence: 70%

“…Even the process temperatures do not affect the shape of the GF. RCF, on the other hand, has folds along the fiber and is hygroscopic [9].…”

Section: Introductionmentioning

confidence: 99%

“…In this publication, the interaction of the two fiber types in the fiber pull-out is to be demonstrated by embedding two fibers next to each other in a polypropylene matrix and pulling them out simultaneously. Since the shell surface of the GF and RCF can be considered the same, a direct comparison can be made [9]. The reference samples were made with two fibers of one type for comparison.…”

Section: Introductionmentioning

confidence: 99%

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Demonstration of Hybrid Effect in Single Fiber Pull-Out Tests for Glass/Cellulose-Reinforced Polypropylene with Different Fiber–Matrix Adhesions

2022

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In hybrid fiber reinforcement, the combination of glass and regenerated cellulose fibers is a promising combination because the different properties of the fibers can be combined. The properties of the regenerated cellulose fiber in combination with the absorption of energy by fiber pull-outs can thus significantly increase the toughness of the composite in the event of failure, while the glass fiber significantly increases the stiffness and strength due to its properties. In this study, the interaction of the two fiber types in a composite is demonstrated by fiber pull-outs. For this purpose, the fibers are embedded in a PP matrix and simultaneously pulled out. Different bondings of the fiber by, e.g., coupling agent and/or a pretreatment of the regenerated cellulose fiber, were also investigated. The results show that each type of fiber has a characteristic force–deformation curve, and the hybrid reinforcement is a combination of both curves. The use of a coupling agent leads to an increase in the interfacial shear stress from 4.5 to 7.5 MPa. A treatment of the regenerated cellulose fiber by UV light further increases the interfacial shear stress to 11 MPa.

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Section: Introductionmentioning

confidence: 70%

“…Even the process temperatures do not affect the shape of the GF. RCF, on the other hand, has folds along the fiber and is hygroscopic [9].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Demonstration of Hybrid Effect in Single Fiber Pull-Out Tests for Glass/Cellulose-Reinforced Polypropylene with Different Fiber–Matrix Adhesions

2022

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“…The behavior of the tensile properties with a polypropylene matrix was also shown in a previous publication. With polypropylene, poor bonding of the fiber to the matrix is to be expected [ 18 ]. A coupling agent was used, which resulted in higher strength in the hybrid reinforced compounds [ 14 ].…”

Section: Resultsmentioning

confidence: 99%

“…This fiber length is to be investigated following processing into test specimens by injection molding ( Figure 1 ). In an earlier publication, a strong interface of GF to a PBT was shown compared to the bonding of GF to a polypropylene [ 18 ]. In addition to the bonding, the fiber length and the hybrid effect will be investigated by the mechanical characterization at a low fiber volume content of 10 vol%.…”

Section: Introductionmentioning

confidence: 99%

Pultruded Hybrid Reinforced Compounds with Glass/Cellulose Fibers in a Polybutylene Terephthalate Matrix: Property Investigation

2022

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The fiber type, orientation of the fiber, fiber-matrix adhesion, and the fiber length are very important for the performance of a short fiber reinforced plastic. Hybrid reinforced polybutylene terephthalate and reference compounds were tested using tensile, Charpy impact, and three-point bending mechanical tests. The interaction of regenerated cellulose fiber and glass fiber was investigated using a polybutylene terephthalate matrix at a fiber volume content of 10%. The ratios of each fiber type was varied. The compounds were pultruded with an extrusion die to have an even fiber length of 3 mm after granulating. In a second step, the specimens were injection molded for mechanical testing. The results were compared to the rule of hybrid mixtures (RoHM) prediction. It was shown that the results of the hybrid reinforced compound were close to the RoHM prediction. The Charpy impact tests show a high positive hybrid effect. The fiber length shows an interaction that is dependent on the ratio of each fiber type.

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Cellulose trays with PLA-based liners as single-used food packaging: Characterisation, performance and migration

Furet,

Singh,

Gardrat

et al. 2024

Food Packaging and Shelf Life

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Investigations on fiber–matrix properties of heat-treated and UV-treated regenerated cellulose fibers

Cited by 12 publications

References 23 publications

Demonstration of Hybrid Effect in Single Fiber Pull-Out Tests for Glass/Cellulose-Reinforced Polypropylene with Different Fiber–Matrix Adhesions

Demonstration of Hybrid Effect in Single Fiber Pull-Out Tests for Glass/Cellulose-Reinforced Polypropylene with Different Fiber–Matrix Adhesions

Pultruded Hybrid Reinforced Compounds with Glass/Cellulose Fibers in a Polybutylene Terephthalate Matrix: Property Investigation

Cellulose trays with PLA-based liners as single-used food packaging: Characterisation, performance and migration

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