Complexation-mediated surface modification of polyamide-66 textile to enhance electroless copper deposition

Gleißner, Carolin; Biermaier, Christian; Bechtold, Thomas; Pham, Tung

doi:10.1016/j.matchemphys.2022.126383

Cited by 10 publications

(1 citation statement)

References 41 publications

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“…The simple and cheap manufacturing process of the sensor elements will allow for their design as disposable devices that can be replaced easily after an alert. Future work will address an improvement of the adhesion of the PPy layer, e.g., by activation of the PA66 fabric surface by complexation, in situ polymer grafting, and plasma treatment to enhance stability against wash ageing and mechanical abrasion [ 38 , 53 , 54 ]. The aspect of functional ageing of the coated fabrics [ 55 ] and the durable contacting of the sensor will also be addressed in future studies.…”

Section: Discussionmentioning

confidence: 99%

Multifunctional Polypyrrole-Based Textile Sensors for Integration into Personal Protection Equipment

Gleissner,

Mayer,

Bechtold

et al. 2024

Sensors

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Integrated safety sensors for personal protection equipment increasingly attract research activities as there is a high need for workers in delicate situations to be physically monitored in order to avoid accidents. In this work, we present a simple approach to generate thin, homogeneous polypyrrole (PPy) layers on flexible textile polyamide fabrics. PPy layers of 0.5–1 µm were deposited on the fabric, which thus kept its flexibility. The conductive layers are multifunctional and can act as temperature and gas sensors for the detection of corrosive gases such as HCl and NH3. Using three examples of life-threatening environments, we were able to monitor temperature, atmospheric NH3 and HCl within critical ranges, i.e., 100 to 400 ppm for ammonia and 20 to 100 ppm for HCl. In the presence of HCl, a decrease in resistance was observed, while gaseous NH3 led to an increase in resistance. The sensor signal thus allows for distinguishing between these two gases and indicating critical concentrations. The simple and cheap manufacturing of such PPy sensors is of substantial interest for the future design of multifunction functional sensors in protective clothing.

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Section: Discussionmentioning

confidence: 99%

Multifunctional Polypyrrole-Based Textile Sensors for Integration into Personal Protection Equipment

Gleissner,

Mayer,

Bechtold

et al. 2024

Sensors

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Altering the percolation threshold of PA66‐copper hybrid in an electroless copper deposition process by surface activation of the polymer

Gleissner,

Biermaier,

Bechtold

et al. 2024

Polymer Composites

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In this study, the impact of three different principles of surface activation techniques for polyamide fibers on the formation of conductive percolation during the subsequent electroless copper deposition process was investigated. The techniques used are (1) polyamide complexation using a solution mixture of calcium chloride, ethanol and water, (2) atmospheric plasma surface treatment and (3) grafting of 2‐hydroxyethylmethacrylate by radical induced polymerization. As a result, the percolation threshold was shifted to lower copper contents. The copper content required to form conductive structures was reduced ranged between 59% and 89%, depending on the activation techniques. Furthermore, the deposition time was reduced by 37%–57%, resulting in a faster build‐up of the percolation on the fabric. Changes in wetting behavior and substrate surface topography were identified to be the main reasons for these observations. While all applied surface activation techniques led to higher copper contents compared to unmodified reference, the atmospheric plasma modification led to the highest copper contents during the deposition process and a more uniform appearance of the metallised layer.Highlights Three different fiber surface activation methods are evaluated. Fiber surface activation increases wetting and polymer‐metal adhesion. Activated polymer surface leads to faster copper deposition and percolation. Atmospheric plasma modification is the most efficient technique.

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Enhancing the electrical conductivity of stretchable silicone composite textiles using ethanol solvent treatment

Kim

Shin

Kim

et al. 2023

Korean J. Chem. Eng.

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Complexation-mediated surface modification of polyamide-66 textile to enhance electroless copper deposition

Cited by 10 publications

References 41 publications

Multifunctional Polypyrrole-Based Textile Sensors for Integration into Personal Protection Equipment

Multifunctional Polypyrrole-Based Textile Sensors for Integration into Personal Protection Equipment

Altering the percolation threshold of PA66‐copper hybrid in an electroless copper deposition process by surface activation of the polymer

Enhancing the electrical conductivity of stretchable silicone composite textiles using ethanol solvent treatment

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