Poly(acrylate/siloxane) hybrid adhesives for polymers with low surface energy

Sonnenschein, Mark F.; Webb, Steven P.; Wendt, Benjamin L.

doi:10.1016/j.ijadhadh.2007.07.001

Cited by 33 publications

(11 citation statements)

References 30 publications

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“…However, the problems of weak metal adhesion due to low surface energy and PDMS thermal expansion due to the baking step of the photolithography still remain unresolved. It has been demonstrated that stable metal deposition is possible by improving the PDMS surface energy through plasma [35], 3-aminopropyltriethoxysilane (APTES) [36], 3-mercaptopropyltrimethoxysilane (MPTMS) [37], and 3-isocyanatopropyltriethoxysilane (IPTES) [38], but structural damage due to thermal expansion cannot be prevented [39].…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Convex PDMS–Parylene Microstructures for Conformal Contact of Planar Micro-Electrode Array

Lee

Park

et al. 2019

Polymers

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Polymer-based micro-electrode arrays (MEAs) are gaining attention as an essential technology to understand brain connectivity and function in the field of neuroscience. However, polymer based MEAs may have several challenges such as difficulty in performing the etching process, difficulty of micro-pattern generation through the photolithography process, weak metal adhesion due to low surface energy, and air pocket entrapment over the electrode site. In order to compensate for the challenges, this paper proposes a novel MEA fabrication process that is performed sequentially with (1) silicon mold preparation; (2) PDMS replica molding, and (3) metal patterning and parylene insulation. The MEA fabricated through this process possesses four arms with electrode sites on the convex microstructures protruding about 20 μm from the outermost layer surface. The validity of the convex microstructure implementation is demonstrated through theoretical background. The electrochemical impedance magnitude is 204.4 ± 68.1 kΩ at 1 kHz. The feasibility of the MEA with convex microstructures was confirmed by identifying the oscillation in the beta frequency band (13–30 Hz) in the electrocorticography signal of a rat olfactory bulb during respiration. These results suggest that the MEA with convex microstructures is promising for applying to various neural recording and stimulation studies.

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Section: Resultsmentioning

confidence: 99%

Fabrication of Convex PDMS–Parylene Microstructures for Conformal Contact of Planar Micro-Electrode Array

Lee

Park

et al. 2019

Polymers

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“…In the conventional composite paints described above, however, poor physical properties and instability of the water-shedding performance are often observed due to the nonuniformity of the polymer matrix and additive agents. To overcome these issues, non-composite silicone coatings such as those produced via sol-gel or addition reactions, and organic-inorganic hybrid systems have been widely investigated [21][22][23][24][25][26]. Such silicone coatings unfortunately possess lower refractive indices than general acrylic coatings.…”

Section: Introductionmentioning

confidence: 99%

Preparation and coating properties of an acrylic melamine resin containing silicone segments

et al. 2012

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The aim of this study was the preparation of novel water repellent UV curable materials using acrylic modified melamine (AM) and poly-dimethylsiloxane (PDMS). UV curable acrylic melamines containing silicone segments (SiAMs) were synthesized by condensation of methylolmelamine, 2-hydroxyethyl acrylate, and carbinol-modified PDMS. The SiAM films with a 0.3 wt% PDMS segment that were cured by UV irradiation had higher transparency than that of a blended sample. Examination with a scanning electron microscope revealed that the blend sample has cohesion of the silicone segments, while such a phenomenon was not observed in the composite samples (SiAMs). From these results, it was confirmed that aggregation of the silicone segments was prevented by introducing the silicone segments into the acrylic melamine. By introducing 0.3 wt% of PDMS segments into AM, good watershedding properties were confirmed, while several of the most attractive features of AM, such as hardness, adhesion, and refractive index, were maintained.

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“…To improve the lower adhesive property, polymer blend, block copolymer, and graft copolymer including PDMS moiety have been widely investigated. [5][6][7][8][9][10][11][12][13][14] Kim et al reported that graft copolymer of styrene (St) and PDMS macromonomer, which introduced polymerizable vinyl group at a terminal of PDMS indicated high water contact angle around 90 at 20 wt % of PDMS macromonomer content. 14 Inoue et al prepared polymer blend of poly(methylmethacrylate) (PMMA) and its block copolymer with PDMS, and found that the water contact angle of the polymer blend reached to 85 and the water-repellent property was improved by addition of only 4 wt % of block copolymer.…”

Section: Introductionmentioning

confidence: 99%

“…In application such as coatings, it is difficult to keep water‐repellent effect because the adhesive property between substrate and PDMS is low and peeling of the coating layer is generated. To improve the lower adhesive property, polymer blend, block copolymer, and graft copolymer including PDMS moiety have been widely investigated 5–14. Kim et al reported that graft copolymer of styrene (St) and PDMS macromonomer, which introduced polymerizable vinyl group at a terminal of PDMS indicated high water contact angle around 90° at 20 wt % of PDMS macromonomer content 14.…”

Section: Introductionmentioning

confidence: 99%

Preparation and morphology of transparent poly(methyl methacrylate)–poly(dimethylsiloxane) hybrid materials using multifunctional silicone macromonomer

Sugimoto

Nishino

Koyama

et al. 2011

J of Applied Polymer Sci

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In this study, transparent poly(methylmethacrylate) (PMMA)-silicone hybrid materials, P(MMA-coSigUMAx), were prepared with methylmethacrylate (MMA) and multifunctional silicone macromonomer introduced methacryl groups. The transmittance of hybrid materials improved with increase of methacryl groups of silicone macromonomer and reached around 90% T. Atomic force microscopic analysis, scanning electron microscope examinations, and copolymerization kinetics estimation by proton nuclear magnetic resonance revealed that the silicone macromonomer randomly incorporated in the copolymer with MMA by the increase of methacryl groups and suppresses the aggregation of the silicone segment. The hybrid materials introduced over 10 wt % of silicone component had watershedding surface and the water contact angle was elevated from 65 to 95. Though the mechanical properties of hybrid materials were lowered by introduction of flexible silicone component, thermal property such as 5 wt % weight loss temperature were improved.

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Poly(acrylate/siloxane) hybrid adhesives for polymers with low surface energy

Cited by 33 publications

References 30 publications

Fabrication of Convex PDMS–Parylene Microstructures for Conformal Contact of Planar Micro-Electrode Array

Fabrication of Convex PDMS–Parylene Microstructures for Conformal Contact of Planar Micro-Electrode Array

Preparation and coating properties of an acrylic melamine resin containing silicone segments

Preparation and morphology of transparent poly(methyl methacrylate)–poly(dimethylsiloxane) hybrid materials using multifunctional silicone macromonomer

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