Polymer dewetting in solvent-non-solvent environment- new insights on dynamics and lithography-free patterning

Golany, Ziv; Weisbord, Inbal; Abo-Jabal, Mohammad; Manor, Ofer; Segal‐Peretz, Tamar

doi:10.1016/j.jcis.2021.02.092

Cited by 9 publications

(5 citation statements)

References 68 publications

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“…A key factor to achieving a suitable long-term utilization of SAW sensors relies on the chemical and mechanical stability of the sensing layer. Using polymers as sensing materials, issues about dewetting associated with the adhesion to the quartz-gold mixed surface of the SSE have been reported [33,34]. Analyses of adhesion of thin films are complex tasks, and most methods are destructive [35].…”

Section: Chemical Resistance and Adhesion Test (Cat)mentioning

confidence: 99%

The Use of Polyurethane Composites with Sensing Polymers as New Coating Materials for Surface Acoustic Wave-Based Chemical Sensors—Part I: Analysis of the Coating Results, Sensing Responses and Adhesion of the Coating Layers of Polyurethane–Polybutylmethacrylate Composites

Rapp,

Voigt,

Dirschka

et al. 2023

Coatings

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The sensing layers for surface acoustic wave-based (SAW) sensors are the main factor in defining the selectivity and reproducibility of the responses of the sensor systems. Among the materials used as sensing layers for SAW sensors, polymers present a wide range of advantages, from availability to a large choice of chemical-sensing environments. However, depending on the physical–chemical properties of the polymer, issues about the chemical and mechanical stability of the sensing layer have been reported that can compromise the application of sensor systems in the long-term. The sensor properties are defined basically by the properties of the coating material and the quality of the coating process. The strategy used to improve the properties of polymeric coating layers for SAW technology involved the use of polyurethane (PU) in combination with a second polymer that is responsible for the sensing properties of the resulting layer; this is obtained by a reproducible and robust coating procedure. In this first part of our research, we used polymer composites of different compositions of polybutylmetacrylate (PBMA) as the sensing polymer with polyurethane. The analysis of the coating (ultrasonic parameters), the relative sensor responses and the adhesion results for the PU–PBMA composites were determined. The ultrasonic analysis and the relative sensor responses showed very reproducible and precise results, indicating the reproducibility and robustness of the coating process. Accurate correlations between the results of the ultrasonic parameters due to the coating and the relative sensor responses for the organic analytes analyzed were obtained, showing a precise quantitative relationship between the results and the constitution of the composite coating materials. The composites show practically no significant sensor responses to water. The PU–PBMA composites substantially enhanced adhesion to the surface of the piezoelectric sensor element in comparison to the coating with pure PBMA, without loss of its sensing properties. Other PU–polymer composites will be presented in the future, as well as an analysis of the selectivity for the organic analytes for these types of coating materials.

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Section: Chemical Resistance and Adhesion Test (Cat)mentioning

confidence: 99%

The Use of Polyurethane Composites with Sensing Polymers as New Coating Materials for Surface Acoustic Wave-Based Chemical Sensors—Part I: Analysis of the Coating Results, Sensing Responses and Adhesion of the Coating Layers of Polyurethane–Polybutylmethacrylate Composites

Rapp,

Voigt,

Dirschka

et al. 2023

Coatings

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show abstract

“…The initial use of pristine polymers as coating sensing materials gave rise to issues of adhesion to the surface of the piezoelectric substrate elements, and dewetting of the polymeric coating was observed, most probably due to the lack of chemical compatibility between some polymers and the surface of the sensor substrates [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

The Use of Polyurethane Composites with Sensing Polymers as New Coating Materials for Surface Acoustic Wave-Based Chemical Sensors—Part II: Polyurethane Composites with Polylaurylmetacrylate, Polyisobutene, and Poly(chlorotrifluoroethylene-co-vinylidene Fluoride): Coating Results, Relative Sensor Responses and Adhesion Analysis

Carvalho,

Rapp,

Voigt

et al. 2024

Coatings

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This work presents the application of the methodology for the sensitization of surface acoustic wave-based sensors (SAW), developed in the first part of this work. The strategy of the method is the obtention of sensing layers with tailored chemical environments by taking advantage of the wide variety of chemical composition of the organic polymers, which have been used as sensing polymers, and combining them with polyurethane (PU) to form polymeric composites that show enhanced properties as sensing materials for the SAW sensor technology. In the first part of this work, the ultrasonic and adhesion characterization was correlated to the sensor responses of PU-polybutylmethacrylate (PBMA) composites of different relative concentrations of the sensing polymer (PBMA) and PU. The resulting coating layers obtained with the PU polymer composites improved the chemical and mechanical properties of the sensing layer without interfering with the quality of their sensor responses in comparison to those with the pristine polymer as the sensing material. In this second part of this work, three new polyurethane polymeric composites were analyzed. The new sensing materials were produced using polylaurylmetacrylate (PLMA), polyisobutene (PIB), and poly(chlorotrifluoroethylene-co-vinylidene fluoride) (PCTFE) as the sensing polymers combined with PU. The results of the new PU polymer composites showed consequently different properties depending on the type of sensing polymer used, reproducing, however, the previous features achieved with PU and polybutylmetacrylate (PBMA) composites, like the improvements in the adhesion and the resistance against an organic solvent and preserving, in each case, the sensor response characteristic of each sensing polymer used, as was also observed for the PU-PBMA polymeric composites. The results obtained with the new sensing materials validated the strategy and confirmed its generalization as a very suitable methodology for the sensitization of SAW sensors, strongly indicating the applicability and reliability of the method, which makes possible the choice of virtually any chemical environments for the sensitization of SAW sensor systems.

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“…On the one hand, the synthesis of polymers usually requires toxic solvents, long reaction time, and high temperature, which is harmful to the environment and consumes large amounts of energy. [4][5][6] On the other hand, polymers inevitably undergo shearing and/or stretching during their processing, leading to molecular chain orientation and residual stress, which result in the shrinkage, warpage, and even cracks in products. [7][8][9] Regarding their application, polymers are easily damaged during practical use and cannot be used repeatedly (especially for thermosets), restricting the service life of products.…”

Section: Introductionmentioning

confidence: 99%

Sustainable polyester vitrimer capable of fast self-healing and multiple shape-programming via efficient synthesis and configuration processing

Zhang

Yang

et al. 2023

J. Mater. Chem. A

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Polymer dewetting in solvent-non-solvent environment- new insights on dynamics and lithography-free patterning

Cited by 9 publications

References 68 publications

The Use of Polyurethane Composites with Sensing Polymers as New Coating Materials for Surface Acoustic Wave-Based Chemical Sensors—Part I: Analysis of the Coating Results, Sensing Responses and Adhesion of the Coating Layers of Polyurethane–Polybutylmethacrylate Composites

The Use of Polyurethane Composites with Sensing Polymers as New Coating Materials for Surface Acoustic Wave-Based Chemical Sensors—Part I: Analysis of the Coating Results, Sensing Responses and Adhesion of the Coating Layers of Polyurethane–Polybutylmethacrylate Composites

Sustainable polyester vitrimer capable of fast self-healing and multiple shape-programming via efficient synthesis and configuration processing

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