Improvement of fibre–matrix adhesion in cellulose/polyolefin composite materials by means of photo-chemical fibre surface modification

Bahners, Thomas; Kelch, Milan; Gebert, Beate; Barajas, Xochitli L. Osorio; Schmidt, Torsten; Gutmann, Jochen S.; Müssig, Jörg

doi:10.1007/s10570-018-1724-4

Cited by 13 publications

(7 citation statements)

References 65 publications

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“…The outer fibres in the sample with a conventional coupling agent (MA) break off flush with the matrix. This phenomenon was also dominant in the fibre pull-out tests (compare Bahners et al 2018). These observations reflect a tendency, which could not be confirmed for every region of the fractured surfaces.…”

Section: Tensile Testingmentioning

confidence: 82%

“…The slope of the curves in the linear elastic range is higher for the thin-films and the MAmodified samples than for the untreated composites, which is reflected in Young's modulus values, which are significantly higher for the modified samples than For the fabrics with a photochemically crosslinked thin layer, the monomer concentration used and the radiation source with radiation duration are shown. MA = maleic anhydride for the untreated samples (compare Bahners et al 2018). Within the modified variants, no significant differences can be found.…”

Section: Tensile Testingmentioning

confidence: 95%

“…From the mechanical investigations at fibre and interphase level (compare Bahners et al 2018) it becomes clear that a higher fibre-matrix adhesion can be achieved by the deposition of thin PETA layers on the regenerated cellulose fibres. In our previous study (Bahners et al 2018), we already observed that at higher monomer concentrations, occlusion of the fibre interstices by cross-linked PETA occur. Based on the preliminary investigations, fabrics were selected for the manufacture of the composites, which were treated with a 1% and 5% PETA solution (Table 1).…”

Section: Composite Processing and Characterizationmentioning

confidence: 99%

“…The stress-strain curves from the tensile tests can be found in Fig. 6 taken from our previous research (Bahners et al 2018).…”

Section: Tensile Testingmentioning

confidence: 99%

“…In a previous instalment, the authors reported on photo-chemical surface modification of viscose fibres (Bahners et al 2018). The surface modification was achieved by deposition of UV-polymerized organic thin layers using pentaerythritol triacrylate (PETA) or allyl diallylphthalate (DAP) as monomers.…”

Section: Introductionmentioning

confidence: 99%

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Improvement of the fatigue behaviour of cellulose/polyolefin composites using photo-chemical fibre surface modification bio-inspired by natural role models

et al. 2020

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Based on the knowledge that plant structures often have graded stiffness transitions between strengthening elements and the surrounding matrix, which result in good damping behaviour and high toughness of the plant structure, the fatigue behaviour of composites made from rayon fibre and polypropylene (PP) as a matrix could be enhanced by photochemical surface modification of the regenerated cellulose fibres. The surface modification was achieved by deposition of UV-polymerized organic thin layers using pentaerythritol triacrylate (PETA) as the monomer. It has been shown earlier that the photochemical modification yields a decrease in wettability of the highly hydrophilic and water adsorbing viscose fibres and an increase in their affinity towards non-polar substances, thus promoting fibre-matrix adhesion. The presented experiments proved that the distinguished mechanical properties of the deposited layer structure also mimic the graded transition and provide good damping and fatigue behaviour superior to either untreated rayon/PP or rayon/maleic anhydride-modified PP composites.

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Section: Tensile Testingmentioning

confidence: 82%

Section: Tensile Testingmentioning

confidence: 95%