Feasibility and Surface Evaluation of the Pigment from Scytalidium cuboideum for Inkjet Printing on Textiles

Gutierrez, Sarath M. Vega; He, Yujuan; Cao, Yu; Stone, Derek W.; Walsh, Zielle; Malhotra, Rajiv; Chen, Hsiou‐Lien; Chang, Chia‐Chin; Robinson, Seri C.

doi:10.3390/coatings9040266

Cited by 14 publications

(8 citation statements)

References 39 publications

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“…The filling-in an A4 paper is about 2 h with a frequency of 20 kHz. Carbon nanotubes are common materials used for printing on various substrates based to obtain accurate and controllable conductive circuits and sensors [18][19][20][21]. A counterfeit fingerprint with electrical and geometric patterns of exquisite ridges and furrows of one to five layers was printed on paper using an inkjet printer; the printed patterned CNT film electrode as the top plate of the capacitive sensor could unlock a smartphone [22].…”

Section: Introductionmentioning

confidence: 99%

A Fully Inkjet-Printed Strain Sensor Based on Carbon Nanotubes

et al. 2020

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A fully inkjet-printed strain sensor based on carbon nanotubes (CNTs) was fabricated in this study for microstrain and microcrack detection. Carbon nanotubes and silver films were used as the sensing layer and conductive layer, respectively. Inkjet-printed CNTs easily undergo agglomeration due to van der Waals forces between CNTs, resulting in uneven films. The uniformity of CNT film affects the electrical and mechanical properties. Multi-pass printing and pattern rotation provided precise quantities of sensing materials, enabling the realization of uniform CNT films and stable resistance. Three strain sensors printed eight-layer CNT film by unidirectional printing, rotated by 180° and 90° were compared. The low density on one side of eight-layer CNT film by unidirectional printing results in more disconnection and poor connectivity with the silver film, thereby, significantly increasing the resistance. For 180° rotation eight-layer strain sensors, lower sensitivity and smaller measured range were found because strain was applied to the uneven CNT film resulting in non-uniform strain distribution. Lower resistance and better strain sensitivity was obtained for eight-layer strain sensor with 90° rotation because of uniform film. Given the uniform surface morphology and saturated sheet resistance of the 20-layer CNT film, the strain performance of the 20-layer CNT strain sensor was also examined. Excluding the permanent destruction of the first strain, 0.76% and 1.05% responses were obtained for the 8- and 20-layer strain sensors under strain between 0% and 3128 µε, respectively, which demonstrates the high reproducibility and recoverability of the sensor. The gauge factor (GF) of 20-layer strain sensor was found to be 2.77 under strain from 71 to 3128 µε, which is higher than eight-layer strain sensor (GF = 1.93) due to the uniform surface morphology and stable resistance. The strain sensors exhibited a highly linear and reversible behavior under strain of 71 to 3128 µε, so that the microstrain level could be clearly distinguished. The technology of the fully inkjet-printed CNT-based microstrain sensor provides high reproducibility, stability, and rapid hardness detection.

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Section: Introductionmentioning

confidence: 99%

A Fully Inkjet-Printed Strain Sensor Based on Carbon Nanotubes

et al. 2020

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“…While it was hoped that linseed oil would provide a less toxic alternative to DCM, future work into identifying new solvents appropriate for use with dramada would be helpful, especially for use with synthetic fabrics. Recent work using pigment from S. cuboideum in inkjet printers may be a particularly effective method of textile dying with fungal pigments [43].…”

Section: Discussionmentioning

confidence: 99%

Oil-Based Fungal Pigment from Scytalidium cuboideum as a Textile Dye

Agurto

Gutierrez

Court

et al. 2020

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Identification of effective natural dyes with the potential for low environmental impact has been a recent focus of the textile industry. Pigments derived from spalting fungi have previously shown promise as textile dyes; however, their use has required numerous organic solvents with human health implications. This research explored the possibility of using linseed oil as a carrier for the pigment from Scytalidium cuboideum as a textile dye. Colored linseed oil effectively dyed a range of fabrics, with natural fibers showing better coloration. Scanning electron microscopy (SEM) revealed a pigment film over the fabric surface. While mechanical testing showed no strength loss in treated fabric, colorfastness tests showed significant changes in color in response to laundering and bleach exposure with variable effects across fabric varieties. SEM investigation confirmed differences in pigmented oil layer loss and showed variation in pigment crystal formation between fabric varieties. Heating of the pigmented oil layer was found to result in a bright, shiny fabric surface, which may have potential for naturally weatherproof garments.

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“…The confirmed presence of potential spalting fungi in the Amazon could increase the use of undervalued wood in the region, if education of its global economic benefits could be achieved. As current research in spalting fungi is showcasing the industrial potential of fungal pigments applied into inks [67], dyes [68], textiles [69], solar energy [70] as well as woodcrafts [26]. Should this occur, it could help protect this endangered ecosystem by giving additional value to the decayed wood from the native forests, thus generating more revenue from forestland versus land use change to agriculture or grazing.…”

Section: Discussionmentioning

confidence: 99%

Exploratory Sampling of Spalting Fungi in the Southern Peruvian Amazon Forest

et al. 2020

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Most of the research related to Peruvian Amazon fungi is focused on edible mushrooms and pathogens. Other important fungi, such as the spalting type (decay fungi that pigment wood internally), are not broadly studied, as most of them do not produce fruiting bodies and can be difficult to locate. Spalting fungi, however, are of broad economic importance due to their ability to produce pigments that enhance wood aesthetics, resulting in an increased economic value. In order to begin understanding the diversity of spalting fungi within certain regions of the Amazon, a sampling of downed trees and branches (through the opening of the xylem to identify potential pigmenting and zone line producing fungi) was done in the district of Las Piedras, Madre de Dios, Peru. Fungi suspected of causing internal pigment and zone lines were collected, cultured, isolated, and sequenced. The species found belonged to the orders Helotiales, Xylariales, Hypocreales, Russulales, Polyporales, Botryosphaeriales and two specimens of the class Leotiomycetes. The fungi collected produced pigments or zone lines in wild conditions and all of them were capable of wood decomposition. Interestingly, these are the same orders and genera as North American spalting fungi, which may indicate a correlation within species that pigment wood. The results obtained start a specific database of spalted fungi in the Amazon and, with it, help support an effort to increase the forest value of ecosystems primarily used for a few high-valued tree species.

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Feasibility and Surface Evaluation of the Pigment from Scytalidium cuboideum for Inkjet Printing on Textiles

Cited by 14 publications

References 39 publications

A Fully Inkjet-Printed Strain Sensor Based on Carbon Nanotubes

A Fully Inkjet-Printed Strain Sensor Based on Carbon Nanotubes

Oil-Based Fungal Pigment from Scytalidium cuboideum as a Textile Dye

Exploratory Sampling of Spalting Fungi in the Southern Peruvian Amazon Forest

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