Effect of plasma treatment on CO2 permeability and selectivity of poly(dimethylsiloxane) membrane

Matsuyama, Hideto; Teramoto, Masaaki; Hirai, Kazuyuki

doi:10.1016/0376-7388(94)00217-m

Cited by 44 publications

(26 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is consistent with the literature results for Ar plasma‐treated PDMS membranes 19. Plasma treatments based on inert gases such as Ar typically result in the formation of free radicals on the surface that recombine to crosslink the surface, and react with O 2 and N 2 after exposure to the atmosphere 19. SEM (scanning electron microscopy) images of Ar plasma‐treated PDMS (not shown) reveal surface damage (pitting, cracking) that is typical of a crosslinked polymer.…”

Section: Resultssupporting

confidence: 93%

“…XPS data show that an Ar plasma treatment followed by exposure to atmosphere changes the surface elemental composition of PDMS by decreasing C and increasing O content, Table 1. This is consistent with the literature results for Ar plasma‐treated PDMS membranes 19. Plasma treatments based on inert gases such as Ar typically result in the formation of free radicals on the surface that recombine to crosslink the surface, and react with O 2 and N 2 after exposure to the atmosphere 19.…”

Section: Resultssupporting

confidence: 91%

“…Experimentally, these plasma treatments involve simple, one or two step dry processes, which result in minimal waste. Low pressure plasmas are widely used both to create polymers and to chemically alter the surface properties of polymeric materials 12–19. Non‐depositing plasma treatments can result in both functional group implantation and crosslinking of the polymer.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Plasma Modification of PDMS Microfluidic Devices for Control of Electroosmotic Flow

Martin

Dressen

Boggs

et al. 2007

Plasma Processes & Polymers

View full text Add to dashboard Cite

Polydimethylsiloxane (PDMS) capillary electrophoresis microchips were modified using plasma‐enhanced chemical vapor deposition (PECVD), resulting in modified electroosmotic flow (EOF) values. Octafluoropropane (C3F8) and acrylic acid (AA) plasmas were chosen as initial test systems for device modification. Argon plasma pretreatments were used to improve adhesion of the fluorocarbon (FC) and AA films. Contact angle measurements and X‐ray photoelectron spectroscopy data demonstrated that the Ar/C3F8 plasma treatment of PDMS results in the deposition of a hydrophobic, crosslinked FC film, whereas the Ar/AA plasma treatment results in the deposition of a hydrophilic film with ionizable acid groups. The extent of plasma modification within the device channels was explored using scanning Auger microscopy and dye absorption measurements. EOF values were measured for plasma‐treated chips as a function of pH, and aging studies were performed to determine the durability of the plasma treatments. Results show that EOF is decreased in Ar/C3F8 plasma‐treated chips, and varies less with pH than untreated devices. Additionally, EOF measurements are constant for a minimum of 5 d. In contrast, EOF for Ar/AA plasma‐treated devices is dependent on pH. EOF measurements of C3F8 and AA treated chips without the Ar pretreatment are less stable, particularly in the AA case. In addition to improving adhesion, the Ar plasma treatment results in a decreased hydrophobic dye absorption into the PDMS, which is attributed to the physical crosslinking of the polymer by the Ar plasma.

show abstract

Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Plasma Modification of PDMS Microfluidic Devices for Control of Electroosmotic Flow

Martin

Dressen

Boggs

et al. 2007

Plasma Processes & Polymers

View full text Add to dashboard Cite

show abstract

“…Post-synthesis methods that modify the structure and microstructure of existing polymeric membranes to optimize the gas transport properties are attractive alternatives to new polymer synthesis. These methods include thermal treatment (4-7), fluorination (8)(9)(10), plasma treatment (11)(12)(13)(14)(15), and ion beam irradiation (15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25). Ion beam irradiation allows selective modification of the chemical structure, microstructure and properties of polymers.…”

Section: Introductionmentioning

confidence: 99%

“…Numerous studies have reported development of polymeric membrane materials that have attractive gas separation properties (i.e., high gas permeability and high permselectivity) combined with thermal and mechanical stability (1)(2)(3). These studies mainly focus on (i) synthesis of polymers designed using structure-property relationship (1)(2)(3)(4)(5)(6)(7), and (ii) development of alternative membrane materials and=or modification of existing polymeric membranes using diverse post-synthesis techniques (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26).…”

Section: Introductionmentioning

confidence: 99%

Effect of H⁺and N⁺Irradiation on Structure and Permeability of the Polyimide Matrimid®

Coleman

2008

Separation Science and Technology

View full text Add to dashboard Cite

This paper presents a comparison of the impact of H þ and N þ ion irradiation on the chemical structure, microstructure, and gas permeation properites of the polyimide, Matrimid 1 . While irradiation with both ions resulted in evolution of chemical structure with loss of functional groups and crosslink formation, there was greater modification of polyimide structure following N þ irradiation at similar total deposited energy. Irradiation with N þ resulted in simultaneous large increases in permeance and permselectivity at comparatively low ion fluences or irradiation time. For example, irradiation at 4 Â 10 14 N þ =cm 2 resulted in a 2.5 fold increase in He permeance with a selectivity of He=CH 4 of 340. Much higher H þ fluences were required to achieve similar total deposited energy and combined increases in permeance and permselectivity. The larger modification in chemical structure and gas permeation properties following N þ irradiation was attributed to the relatively large energy loss and damage from the nuclear energy relative to electronic energy loss.

show abstract

Preparation of cellulose triacetate pervaporation membrane by ammonia plasma treatment

Bhat

Wavhal

2000

J. Appl. Polym. Sci.

View full text Add to dashboard Cite

Homogeneous cellulose triacetate membranes were prepared by the solution-casting method. The surface of this membrane was modified with gaseous plasma of a 10-W discharge power in the presence of ammonia gas at 0.15 Torr pressure. The percentage of weight loss of the CTA membranes was found to be 0.7 for 20 min of treatment time in the ammonia plasma. The contact angle measurement indicated that hydrophilicity of the surface increases. ATR-FTIR spectral analysis showed that the hydrophilicity is mainly derived from the amino groups on the modified surface. SEM studies indicate that no considerable change of surface morphology occurred up to 5 min of treatment time, but a considerable change of surface morphology resulted for treatment of 10 and 20 min. The modified membranes were used for pervaporation studies for separation of an isopropanol-aqueous mixture. These membranes showed excellent selectivity for water. The water flux increases with an increase in treatment time for all concentrations of isopropanol in the feed. The isopropanol flux decreases for initial treatment time (2 and 5 min), but showed an increasing trend for a higher treatment time (10 and 20 min).

show abstract

Effect of plasma treatment on CO2 permeability and selectivity of poly(dimethylsiloxane) membrane

Cited by 44 publications

References 12 publications

Plasma Modification of PDMS Microfluidic Devices for Control of Electroosmotic Flow

Plasma Modification of PDMS Microfluidic Devices for Control of Electroosmotic Flow

Effect of H⁺and N⁺Irradiation on Structure and Permeability of the Polyimide Matrimid®

Preparation of cellulose triacetate pervaporation membrane by ammonia plasma treatment

Contact Info

Product

Resources

About

Effect of plasma treatment on CO2 permeability and selectivity of poly(dimethylsiloxane) membrane

Cited by 44 publications

References 12 publications

Plasma Modification of PDMS Microfluidic Devices for Control of Electroosmotic Flow

Plasma Modification of PDMS Microfluidic Devices for Control of Electroosmotic Flow

Effect of H+and N+Irradiation on Structure and Permeability of the Polyimide Matrimid®

Preparation of cellulose triacetate pervaporation membrane by ammonia plasma treatment

Contact Info

Product

Resources

About

Effect of H⁺and N⁺Irradiation on Structure and Permeability of the Polyimide Matrimid®