2010
DOI: 10.1021/am100322j
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Near-Surface Composition Profiles and the Adhesive Properties of Statistical Copolymer Films Being Model Systems of Pressure Sensitive Adhesive Films

Abstract: 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 pe… Show more

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Cited by 24 publications
(32 citation statements)
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“…By iterative comparison of the calculated with the measured reflectivity, the vertical material profile is obtained. We chose a grayscale‐coded presentation of the vertical material profile,54 in which black corresponds to a pure PCBM phase and white to a pure P3HT phase. The grayscale is a linear function of P3HT and PCBM calculated from the vertical material composition profile obtained from XRR.…”
Section: Resultsmentioning
confidence: 99%
“…By iterative comparison of the calculated with the measured reflectivity, the vertical material profile is obtained. We chose a grayscale‐coded presentation of the vertical material profile,54 in which black corresponds to a pure PCBM phase and white to a pure P3HT phase. The grayscale is a linear function of P3HT and PCBM calculated from the vertical material composition profile obtained from XRR.…”
Section: Resultsmentioning
confidence: 99%
“…As observed recently, the dMMA component slightly enriches at the very surface in a thin layer of 1.3 nm. During drying of the polymer film the component, which is slightly better soluble in toluene (dMMA) gets dragged to the surface . This enrichment of dMMA on the film surface is followed by an enrichment of EHA (with thickness of 5.5 nm).…”
Section: Resultsmentioning
confidence: 99%
“…As has been demonstrated in other work, 52,53 the tackiness of adhesive film can be affected by the near-surface composition of the PSAs, which can be influenced by atmospheric conditions (e.g. relative humidity) for some polymer systems with polar The E'' peaks presented in Figure 6b were used to find the polymer's glass transition temperature, Tg.…”
Section: Adhesive and Mechanical Properties Of The Nanocomposite Psasmentioning
confidence: 69%