Copolymerization Characteristics of Methyl Acrylate and Methyl Methacrylate. II. Analysis of Methyl Acrylate-Methyl Methacrylate Copolymers by Infrared Spectroscopy

Kotera, Akira; Shima, Mikiko; Akiyama, Katsuo; Kume, Masako; Miyakawa, Machiko

doi:10.1246/bcsj.39.758

Cited by 10 publications

(4 citation statements)

References 4 publications

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“…The pair of peaks at 1453 and 1510 cm −1 are useful to distinguish PMMA from poly(methyl acrylate) (PMA). 56 The 1453 cm −1 peak, which was present in all samples, is attributable to a methylene vibration −CH 2 − found in both PMMA and PMA. The peak at 1510 cm −1 , attributable to the methyl vibration C−CH 3 , is indicative of PMMA.…”

Section: ■ Results and Discussionmentioning

confidence: 83%

“…We examined the surface chemistry of the printed pieces by ATR-FTIR to potentially explain the difference in susceptibility to silanization between resins (Figure b). The pair of peaks at 1453 and 1510 cm –1 are useful to distinguish PMMA from poly(methyl acrylate) (PMA) . The 1453 cm –1 peak, which was present in all samples, is attributable to a methylene vibration −CH 2 – found in both PMMA and PMA.…”

Section: Resultsmentioning

confidence: 99%

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Selective Fluorination of the Surface of Polymeric Materials after Stereolithography 3D Printing

2021

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With the microfluidics community embracing 3D resin printing as a rapid fabrication method, controlling surface chemistry has emerged as a new challenge. Fluorination of 3D-printed surfaces is highly desirable in many applications due to chemical inertness, low friction coefficients, antifouling properties, and the potential for selective hydrophobic patterning. Despite sporadic reports, silanization methods have not been optimized for covalent bonding with polymeric resins. As a case study, we tested the silanization of a commercially available (meth)acrylate-based resin (BV-007A) with a fluoroalkyl trichlorosilane. Interestingly, plasma oxidation was unnecessary for silanization of this resin and indeed was ineffective. Solvent-based deposition in a fluorinated oil (FC-40) generated significantly higher contact angles than deposition in ethanol or gas-phase deposition, yielding hydrophobic surfaces with contact angle >110° under optimized conditions. Attenuated total reflectance-Fourier transform infrared spectroscopy indicated that the increase in the contact angle correlated with consumption of a carbonyl moiety, suggesting covalent bonding of silane without plasma oxidation. Consistent with a covalent bond, silanization was resistant to mechanical damage and hydrolysis in methanol and was stable over long-term storage. When tested on a suite of photocrosslinkable resins, this silanization protocol generated highly hydrophobic surfaces (contact angle > 110°) on three resins and moderate hydrophobicity (90–100°) on the remainder. Selective patterning of hydrophobic regions in an open 3D-printed microchannel was possible in combination with simple masking techniques. Thus, this facile fluorination strategy is expected to be applicable for resin-printed materials in a variety of contexts including micropatterning and multiphase microfluidics.

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Section: ■ Results and Discussionmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Selective Fluorination of the Surface of Polymeric Materials after Stereolithography 3D Printing

2021

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show abstract

“…The pair of peaks at 1453 and 1510 cm -1 are useful to distinguish PMMA from poly(methyl acrylate) (PMA). 48 The 1453 cm -1 peak, which was present in all samples, is attributable to a methylene vibration -CH2-found in both PMMA and PMA. The peak at 1510 cm -1 , attributable to the methyl vibration C-CH3, is indicative of PMMA.…”

Section: Patterning Of Surface Hydrophobicity On 3d Printed Partsmentioning

confidence: 82%

Versatile and Selective Fluorination of the Surface of Polymeric Materials After Stereolithography 3D Printing

Catterton

Montalbine²,

Pompano³

2021

Preprint

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With the microfluidics community embracing 3D resin printing as a rapid fabrication method, controlling surface chemistry has emerged as a new challenge. Fluorination of 3D printed surfaces is highly desirable in many applications due to chemical inertness, low friction coefficients, anti-fouling properties and the potential for selective hydrophobic patterning. Despite sporadic reports, silanization methods have not been optimized for covalent bonding with polymeric resins. As a case study, we tested the silanization of a commercially available (meth)acrylate-based resin (BV-007A) with a fluoroalkyl trichlorosilane. Interestingly, plasma oxidation was unnecessary for silanization of this resin, and indeed was ineffective. Solvent-based deposition in a fluorinated oil (FC-40) generated significantly higher contact angles than deposition in ethanol or gas-phase deposition, yielding hydrophobic surfaces with contact angle > 110˚ under optimized conditions. Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) spectroscopy indicated that the increase in contact angle correlated with consumption of a carbonyl moiety, suggesting covalent bonding of the silane without plasma oxidation. Consistent with a covalent bond, the silanization was resistant to mechanical damage and hydrolysis in methanol, and was stable over long-term storage. When tested on a suite of photocrosslinkable resins, this silanization protocol generated highly hydrophobic surfaces (contact angle > 110˚) on three resins and moderate hydrophobicity (90 – 100˚) on the remainder. Selective patterning of hydrophobic regions in an open 3D-printed microchannel was possible in combination with simple masking techniques. Thus, this facile fluorination strategy is expected to be applicable for resin-printed materials in a variety of contexts including micropatterning and multiphase microfluidics.

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“…Figure 6 Tensile properties of thermoplastic system B2 (Table I ) ( 0 ) before and after UV treatment: ( 1 ) 5 h; ( 2 ) 15 h; (3) 24 h. linking for special considering also the degradation conditions.…”

Section: E (94mentioning

confidence: 99%

Correlation between mechanical properties and degradation processes of poly(methyl methacrylate‐co‐butyl acrylate) films

Leskovac

Kovačević

Stanojević

et al. 1994

J of Applied Polymer Sci

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SYNOPSISCopolymer systems based on various molar ratios of methyl methacrylate (MMA) /butyl acrylate (BA) and different mass content of N-methylolacrylamide (NMA) , as a crosslinking agent, were investigated. The influence of temperature, 150°C, under conditions similar to those used in the textile industry, and effect of ultraviolet (UV ) irradiation were examined. The changes of mechanical properties were found to be connected with the cross-linking and/or degradation mechanisms. The effect of copolymer composition on the mechanical properties was established, especially during UV degradation.

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Copolymerization Characteristics of Methyl Acrylate and Methyl Methacrylate. II. Analysis of Methyl Acrylate-Methyl Methacrylate Copolymers by Infrared Spectroscopy

Cited by 10 publications

References 4 publications

Selective Fluorination of the Surface of Polymeric Materials after Stereolithography 3D Printing

Selective Fluorination of the Surface of Polymeric Materials after Stereolithography 3D Printing

Versatile and Selective Fluorination of the Surface of Polymeric Materials After Stereolithography 3D Printing

Correlation between mechanical properties and degradation processes of poly(methyl methacrylate‐co‐butyl acrylate) films

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