Surface Modification of PDMS and Plastics with Zwitterionic Polymers

Tanaka, Mutsuo; Kurosawa, Shigeru

doi:10.5650/jos.ess17041

Cited by 6 publications

(9 citation statements)

References 40 publications

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“…Studies revealed that zwitterionic polymers are adsorbed on the PDMS surface treated with air plasma to afford a hydrophilic surface, and the adsorption of zwitterionic polymers on the PDMS surface is sufficiently strong to resist ultrasonic cleaning in water. (44,45) The hydrophilicity of the PDMS surface was maintained even 1 month after the modification, while the PDMS surface treated only with air plasma recovered its hydrophobicity within four days owing to the molecular mobility of PDMS as reported previously. (28)(29)(30)(31)(32)(33)(34) We compared two heat-treated zwitterionic polymers, sulfobetaine (C3SB) and phosphoryl choline (MPC) (Fig.…”

Section: Introductionsupporting

confidence: 75%

“…Although our previous works on C3SB and MPC suggested that C3SB is superior to MPC in terms of the durability of hydrophilicity, (44,45) the cell toxicity of the phosphoryl choline polymer is known to be quite low and considered to be a promising material for biomedical applications. Therefore, we evaluated the cell toxicity of C3SB in comparison with that of MPC in terms of the influence of the polymers on cell growth according to the reported procedures.…”

Section: Cell Toxicity Of Polymersmentioning

confidence: 99%

“…The C3SB polymer was synthesized by reacting with 1 M C3SB monomer aqueous solution with 10 mM ammonium persulfate at 50 ℃ for 15 h without deoxygenation, while MPC was synthesized according to the procedure reported in Ref. 44. The molecular weights of C3SB and MPC are 80000 and 67000, respectively.…”

Section: Cell Toxicity Of Polymersmentioning

confidence: 99%

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Sulfobetaine Polymers toward Application of Polydimethylsiloxane (PDMS) Surface Modification

Tanaka¹,

Ogawa²,

Hirata³

et al. 2019

Sensors and Materials

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The surface modification of the polydimethylsiloxane (PDMS) elastomer was studied to obtain a durable hydrophilic surface leading to the reduction in surface tension with an aqueous solution for microflow channel application. Among hydrophilic polymers, it was found that a zwitterionic polymer, sulfobetaine, was adsorbed strongly on the PDMS surface treated with air plasma to afford a durable hydrophilic surface. The PDMS surface treated with air plasma is known to be a silica-like surface with negative charges, and electrostatic interaction, namely, polyion complex interaction between the sulfobetaine polymer and the treated PDMS surface, was sufficiently strong to maintain hydrophilicity even after heat treatment. Furthermore, cell culture experiments showed that the influence of the sulfobetaine polymer on cell growth was negligible, similar to 2-methacryloyloxyethyl phosphoryl choline (MPC) polymer, which is a common polymer for biomedical applications. The AFM observation of the PDMS surface modified with the sulfobetaine polymer suggests that the thickness of the sulfobetaine polymer film was very small on nm order; therefore, this modification method can maintain the microflow channel form. These results demonstrated that the sulfobetaine polymer could be a promising material for the surface modification of PDMS microflow channels for biomedical applications.

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Section: Introductionsupporting

confidence: 75%

Section: Cell Toxicity Of Polymersmentioning

confidence: 99%

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Sulfobetaine Polymers toward Application of Polydimethylsiloxane (PDMS) Surface Modification

Tanaka¹,

Ogawa²,

Hirata³

et al. 2019

Sensors and Materials

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“…The examination revealed that zwitterionic polymers are adsorbed on the PDMS surface treated with air-plasma to afford hydrophilic surface. 36 In this work, we studied on the relationship between structures of zwitterionic polymers and electrostatic interaction toward modification of PDMS surface.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and structures of zwitterionic polymers to induce electrostatic interaction with PDMS surface treated by air-plasma

Tanaka¹,

Hirata²,

Sawaguchi³

et al. 2018

Arkivoc

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Various zwitterionic polymers, sulfobetaine and phosphoryl choline derivatives were synthesized in order to investigate zwitterionic polymer structures toward surface modification of PDMS, where the adsorption of zwitterionic polymers on polydimethylsiloxane surface treated with air-plasma was induced by the electrostatic interaction,. The electrostatic interaction was evaluated with hydrophilicity. The results suggested that a sulfobetaine polymer with higher molecular weight, lower molecular weight distribution, and shorter alkyl chain afforded high electrostatic interaction. A sulfobetaine polymer bearing phenylazide group showed similar electrostatic interaction with the PDMS surface, and it is a promising material for surface modification ofpolydimethylsiloxane.

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“…| https://mc03.manuscriptcentral.com/friction developed to modify the surface of silicone elastomer materials for reducing the friction coefficient (COF). Among them, surface coating of the hydrophilic polymer layer can effectively improve the water lubrication performance of silicon-based materials surface, especially for catheters and other equipment [10,11]. However, the combination between the polymer coating and substrate is commonly noncovalent while the interface bonding force is poor.…”

Section: Introductionmentioning

confidence: 99%

Constructing a biomimetic robust bi-layered hydrophilic lubrication coating on surface of silicone elastomer

Gao

Zhao

et al. 2021

Friction

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Silicone elastomers-based materials have been extensively involved in the field of biomedical devices, while their use is extremely restricted due to the poor surface lubricity and inherent hydrophobicity. This paper describes a novel strategy for generating a robust layered soft matter lubrication coating on the surface of the polydimethylsiloxane (PDMS) silicone elastomer, by entangling thick polyzwitterionic polyelectrolyte brush of poly (sulfobetaine methacrylate) (PSBMA) into the sub-surface of the initiator-embedded stiff hydrogel coating layer of P(AAm-co-AA-co-HEMA-Br)/Fe, to achieve a unified low friction and high load-bearing properties. Meanwhile, the stiff hydrogel layer with controllable thickness is covalently anchored on the surface of PDMS by adding iron powder to provide catalytic sites through surface catalytically initiated radical polymerization (SCIRP) method and provides high load-bearing capacity, while the topmost brush/hydrogel composite layer is highly effective for aqueous lubrication. Their synergy effects are capable of attaining low friction coefficient (COFs) under wide range of loaded condition in water environment with steel ball as sliding pair. Furthermore, the influence of mechanical modulus of the stiff hydrogel layer on the lubrication performance of layered coating is investigated, for which the COF is the lowest only when the modulus of the stiff hydrogel layer well matches the PDMS substrate. Surprisingly, the COF of the modified PDMS could remain low friction (COF < 0.05) stably after encountering 50,000 sliding cycles under 10 N load. Finally, the surface wear characterizations prove the robustness of the layered lubricating coating. This work provides a new route for engineering lubricious silicon elastomer with low friction, high load-bearing capacity, and considerable durability.

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Surface Modification of PDMS and Plastics with Zwitterionic Polymers

Cited by 6 publications

References 40 publications

Sulfobetaine Polymers toward Application of Polydimethylsiloxane (PDMS) Surface Modification

Sulfobetaine Polymers toward Application of Polydimethylsiloxane (PDMS) Surface Modification

Synthesis and structures of zwitterionic polymers to induce electrostatic interaction with PDMS surface treated by air-plasma

Constructing a biomimetic robust bi-layered hydrophilic lubrication coating on surface of silicone elastomer

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