Low-Rate Dynamic Contact Angles on Poly(methyl methacrylate) and the Determination of Solid Surface Tensions

Kwok, Daniel Y.; Leung, Anna Oi Wah; Lam, C.N. Catherine; Li, A.; Wu, Rebecca; Neumann, A. W.

doi:10.1006/jcis.1998.5610

Cited by 78 publications

(73 citation statements)

References 62 publications

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“…The literature values of the surface tensions of the involved homopolymers are γ(PEHA) ) 30 mN/m and γ(PMMA) ) 38.5 mN/m (54,55). Thus an equilibrium structure is installed by minimizing the surface free energy.…”

Section: Composition Profiles As a Function Of Timementioning

confidence: 99%

Near-Surface Composition Profiles and the Adhesive Properties of Statistical Copolymer Films Being Model Systems of Pressure Sensitive Adhesive Films

Diethert

Peykova

Willenbacher

et al. 2010

ACS Appl. Mater. Interfaces

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Statistical copolymer films that consist of two types of monomers, a sticky and a glassy monomer, are investigated. These model systems of pressure-sensitive adhesive films are probed with X-ray reflectivity and mechanical tack measurements. For the first time, composition profiles along the surface normal in the near-surface region are monitored. The influence of the type of monomers being copolymerized, the monomer ratio, and the sample age on the near-surface composition as well as the resulting adhesive performance of the films are analyzed. The copolymers contain ethylhexyl acrylate as the majority component and styrene, maleic acid anhydride, or methylmethacrylate as a minority component. Regardless of the composition, we find a surface enrichment of one component in all samples. In the case of freshly prepared samples, this enrichment is driven by solubility due to the preparation based on solution casting. The minimization of the surface free energy results in an internal reorganization and the component of the statistical copolymer with the lower surface tension enriches at the free surface. The mechanical behavior is not dominated by the surface but by the surface-near part of the composition profile.

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Section: Composition Profiles As a Function Of Timementioning

confidence: 99%

Near-Surface Composition Profiles and the Adhesive Properties of Statistical Copolymer Films Being Model Systems of Pressure Sensitive Adhesive Films

Diethert

Peykova

Willenbacher

et al. 2010

ACS Appl. Mater. Interfaces

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show abstract

“…The P(MMA/EMA, 30/70)-coated surfaces were prepared by a solvent-casting technique described elsewhere. [45][46][47] With respect to the low-rate dynamic contact angle measurements by ADSA-P, liquid was supplied to the sessile drop from below the wafer surface using a motorized syringe device. 40,41 In order to facilitate such an experimental procedure, a hole of about 1 mm diameter was made, by using a diamond drill bit from Lunzer (New York, NY; SMS-0.027), in the center of each rectangular wafer surface before soaking in chromic acid.…”

Section: Materials (Solid Surface and Liquids)mentioning

confidence: 99%

“…A more complete discussion of these matters can be found elsewhere. 51 In previous studies, 45,50 low-rate dynamic contact angles of various liquids were reported on two methacrylate polymers: poly(methyl methacrylate) PMMA 45 and poly(ethyl methacrylate) PEMA. 50 It was found that ␥ lv cos changes smoothly with ␥ lv , on one and the same solid surface.…”

Section: Introductionmentioning

confidence: 98%

“…This contact angle pattern is in harmony with those from other methacrylate polymer surfaces previously studied. 45,50 The solid-vapor surface tension calculated from the equation-of-state approach for solid-liquid interfacial tensions 14 is found to be 35.1 mJ/m 2 , with a 95% confidence limit of Ϯ 0.3 mJ/m 2 , from the experimental contact angles of the seven liquids. …”

mentioning

confidence: 99%

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Low-rate dynamic contact angles on poly(methyl methacrylate/ethyl methacrylate, 30/70) and the determination of solid surface tensions

Kwok

Neumann

1999

J. Polym. Sci. B Polym. Phys.

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“…Poly(methy1 methacrylate) (PMMA) was purchased from Polysciences, Nine liquids were chosen in this study [113]. They are listed in Table G …”

Section: Low-rate Dynamic Contact Angles On a Poly(methyl Methacrylatmentioning

confidence: 99%

Contact angles and surface energetics

Neumann

Kwok

Horizons 2000 – Aspects of Colloid and Interface Science at the Turn of the Millenium

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Low-Rate Dynamic Contact Angles on Poly(methyl methacrylate) and the Determination of Solid Surface Tensions

Cited by 78 publications

References 62 publications

Near-Surface Composition Profiles and the Adhesive Properties of Statistical Copolymer Films Being Model Systems of Pressure Sensitive Adhesive Films

Near-Surface Composition Profiles and the Adhesive Properties of Statistical Copolymer Films Being Model Systems of Pressure Sensitive Adhesive Films

Low-rate dynamic contact angles on poly(methyl methacrylate/ethyl methacrylate, 30/70) and the determination of solid surface tensions

Contact angles and surface energetics

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