6533b823fe1ef96bd127f37a
RESEARCH PRODUCT
Surface characterization of functional poly(diacetylene) and poly(butadiene) mono- and multilayers
Bernd HupferHelmut RingsdorfJoseph D. AndradeJoseph D. AndradeR.a Van WagenenR.a Van WagenenHans Schuppsubject
Materials sciencePolymers and PlasticsDiacetyleneAnalytical chemistryStreaming currentContact anglechemistry.chemical_compoundColloid and Surface ChemistryX-ray photoelectron spectroscopyPolymerizationchemistryEllipsometryMonolayerMaterials ChemistryPhysical and Theoretical ChemistryOctanedescription
The surface properties of Langmuir-Blodgett mono- and multilayers of a variety of amphiphilic poly(diacetylene)s and poly(butadiene)s were investigated by contact angle, streaming potentialζ, ellipsometry, and X-ray photoelectron spectroscopic (XPS) measurements. Captive air and octane angles varied between approximately 60° and 105° for hydrophobicx-layers and 31° to 46° for hydrophilic surfaces depending on the particular head group, whereas advancing angles determined via the vertical plate method are considerably higher. Negative streaming potentials were obtained for all surfaces. Positively charged monolayers yielded less negativeζ- potential values (−28 mV) than negatively charged (−52 mV) or hydrophobic (−50 mV) layers. Ellipsometry measurements yielded an average layer thickness of 27±6 A for 3 to 11 layers. X-ray photoelectron spectroscopy results qualitatively confirmed the expected composition. All of the samples, which were handled and stored in air after deposition and polymerization, were surface oxidized.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1982-03-01 | Colloid and Polymer Science |