Research Data Leeds Repository

Data for Design of experiments investigation into the production of all cellulose composites using regenerated cellulosic textiles

Citation

Victoria, Ashley and Hine, Peter J. and Ward, Keeran and Ries, Michael (2024) Data for Design of experiments investigation into the production of all cellulose composites using regenerated cellulosic textiles. University of Leeds. [Dataset] https://doi.org/10.5518/1550

Dataset description

Data for All cellulose composites (ACCs) can be produced from native and man-made cellulosic fibres; use of the latter provides an additional application for waste-derived regenerated fibers. ACCs were prepared using an ionic liquid dissolution method, utilizing a regenerated cellulose (Tencel) textile, with and without an interleaf cellulosic film. A design of experiments methodology was applied to explore process-property relationships; concentration of the ionic liquid and the processing time and temperature were investigated. It was found that the film remained in-between the textile layers, rather than penetrating the fiber assembly, in contrast to our previous work on cotton-based ACCs. This is due to the structural differences between Tencel and cotton fabric. A multi-response optimization was conducted through a central composite face centered strategy, which captured the film system more strongly. Optimized processing conditions were identified, yielding a Young's modulus and strain-to-failure of 5.3 GPa and 3.5% respectively, validated through in-lab samples. Mechanical Testing Tensile strength, Young's modulus and strain-to-failure were evaluated using an Instron 5584 universal tensile tester according to ASTM D1846. Test specimens were cut using a laser cutter to a gauge length of 30 mm and width of 5 mm and tested using a crosshead speed of 10 mm/min. Density measurement A gravimetric approach was used to determine the densities of the optimized ACCs. The dimensions of cut specimen samples were measured using an RS PRO digital caliper to obtain the specimen volume, and subsequently weighed. For each ACC, three specimens were measured and weighed to obtain an estimation of error. A reference value of 1.5 g/cm3 was used for the density of the cellulosic materials within the ACC, drawing from existing literature; the density of plant fibers is reported to be between 1.4 and 1.5 g/cm3 [44]. Cellulose II is reported to have an approximate density at 1.5 g/cm3, and the density of bulk amorphous cellulose is estimated to be in the range of 1.48 to 1.5 g/cm3. Optical microscopy Cross-sections of the prepared ACCs were observed using an Olympus BH2 microscope in reflection mode. Composite thickness measurements were then extracted from these images utilizing ImageJ software. To enhance image clarity, samples were embedded in epoxy resin using a silicon mold and subsequently polished. To ensure an accurate representation of each sample was presented in this paper, multiple images were obtained from which thickness measurements were taken. For each ACC sample, an average thickness value, along with the corresponding standard error, was calculated from six measurements.

Divisions:

Faculty of Engineering and Physical Sciences > School of Chemical and Process Engineering
Faculty of Engineering and Physical Sciences > School of Physics and Astronomy

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