Deformation micromechanics of model regenerated cellulose fibre-epoxy/polyester composites

Mottershead, B.; Eichhorn, Stephen J.

doi:10.1016/j.compscitech.2006.11.003

Cited by 38 publications

(13 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, cellulose fibers act as a nucleating agent for polymer crystallization. This behavior has already been mentioned in other systems [49][50][51]. In conclusion, the whole results converge to the fact that the thermal properties gradually change with the amount of cellulose content in the composite.…”

Section: Thermal Properties Of the Compositesupporting

confidence: 80%

Effects of cellulose fiber content on physical properties of polyurethane based composites

Hadjadj

Jbara

Tara

et al. 2016

Composite Structures

View full text Add to dashboard Cite

Section: Thermal Properties Of the Compositesupporting

confidence: 80%

Effects of cellulose fiber content on physical properties of polyurethane based composites

Hadjadj

Jbara

Tara

et al. 2016

Composite Structures

View full text Add to dashboard Cite

“…Intact lyocell fibres typically exhibit highly uniform circular cross-sections with diameters ~10 µm, as has been reported previously [35]. Images of fibrils after mechanical treatments of intact fibres for durations between 10 and 60 min are shown in Figure 2.…”

Section: Resultsmentioning

confidence: 69%

Stress transfer in microfibrillated cellulose reinforced poly(vinyl alcohol) composites

Tanpichai

Sampson

Eichhorn

2014

Composites Part A: Applied Science and Manufacturing

View full text Add to dashboard Cite

Combined homogenization and sonication treatments of micron-sized lyocell fibres were used to generate microfibrillated celluose (MFC) with fibril diameters of ~350 nm. No further reduction in fibril diameter was observed after 30 minutes treatment. Poly(vinyl alcohol) (PVA) composites reinforced with these fibrils were fabricated using solvent casting and physical and mechanical properties were investigated. The presence of MFC in PVA increased the thermal degradation of the polymer. An increase in both the tensile strength and modulus of the composites was observed for up to 3 wt.% of fibrils; beyond this point no significant increases were observed. An estimate of ~39 GPa is made for the fibril modulus based on this increase. Stress-transfer between the polymer resin and the fibrils was investigated using Raman spectroscopy. Stress transfer in the composite is shown to be greater than that of a pure network of fibres, indicating a good fibre-matrix bond.

show abstract

“…This fibre is produced using a liquid crystalline solution of cellulose dissolved in phosphoric acid [6,22]. The mechanical properties for this fibre have been previously reported; Young's modulus of 55.4 GPa, strength of 2.6 GPa, breaking strain of 5.5 % and diameter of 11.8 lm [7]. For comparison with these liquid crystalline fibres, a lyocell fibre was also used for the graphitisation experiments.…”

Section: Methodsmentioning

confidence: 99%

“…The fibre's high stiffness and strength are due to the high degree of molecular alignment achieved by spinning a liquid crystalline solution of cellulose in phosphoric acid [6]. Fibres made by this process have been reported to have Young's moduli of about 55-60 GPa [7]. Since this regenerated cellulose fibre is already well structured, and the cellulose molecules are highly oriented [8], it is an attractive precursor material for carbon fibres.…”

Section: Introductionmentioning

confidence: 97%

Production of carbon fibres from a pyrolysed and graphitised liquid crystalline cellulose fibre precursor

et al. 2012

View full text Add to dashboard Cite

Regenerated cellulose fibres, spun from a liquid crystalline precursor, were pyrolysed at temperatures in the range 400-2,500°C. Raman spectroscopy and X-ray diffraction showed that the degree of graphitisation of the fibre increased with increasing temperature. Electron microscopy, however, suggested that the fibres have a skin-core structure. This observation was confirmed by micro-Raman analysis, whereupon the ratio of the intensities of the D and G bands shows that the skin consists of a graphitised structure, whereas the core consists of significantly less graphitised material. The contributions of the graphitised skin and the inner core to the potential mechanical properties of the fibres were also assessed by following the position of the 2D Raman band during tensile deformation of the fibre. The Raman band shift rate against strain was used to evaluate the fibre modulus, which suggested a modulus of *140 GPa for the skin and 40 GPa for the core, respectively. If this incomplete graphitisation could be overcome, then there is potential to produce carbon fibres from these novel precursor materials.

show abstract

Deformation micromechanics of model regenerated cellulose fibre-epoxy/polyester composites

Cited by 38 publications

References 33 publications

Effects of cellulose fiber content on physical properties of polyurethane based composites

Effects of cellulose fiber content on physical properties of polyurethane based composites

Stress transfer in microfibrillated cellulose reinforced poly(vinyl alcohol) composites

Production of carbon fibres from a pyrolysed and graphitised liquid crystalline cellulose fibre precursor

Contact Info

Product

Resources

About