Surface characterization of 2-hydroxyethyl methacrylate/styrene copolymers by angle-dependent X-ray photoelectron spectroscopy and static secondary ion mass spectrometry.

Surface characterization of 2-hydroxyethyl methacrylate/styrene copolymers by angle-dependent X-ray photoelectron spectroscopy and static secondary ion mass spectrometry. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Surface characterization of 2-hydroxyethyl methacrylate/styrene copolymers by angle-dependent X-ray photoelectron spectroscopy and static secondary ion mass spectrometry. Abstract Text:

D G Castner,B D Ratner,D W Grainger,S W Kim,T Okano,K Suzuki,D Briggs,S Nakahama,

The surface composition and structure of three structurally distinct amphiphilic copolymers of 2-hydroxyethyl methacrylate (HEMA) and styrene have been examined with angle-dependent X-ray photoelectron spectroscopy (XPS) and static secondary ion mass spectrometry (SIMS). The phase-separated block copolymer made by anionic living polymerization, HSH-A50, showed significant surface enrichment of styrene. The outermost 2-3 A appeared to be approximately 100% styrene, with the styrene concentration decreasing to its bulk value at a depth of approximately 50 A from the surface. However, HEMA was detected in the outer 20 A of this copolymer. The presence of HEMA in the surface region implies this copolymer may undergo significant restructuring when hydrated in a hydrophilic environment (as opposed to the hydrophobic environment in which the sample was prepared and analyzed). The phase-separated block copolymer made by telechelic coupling of free radical polymerized functionalized oligomers, HSH-B60, showed only slight styrene enrichment at the surface. Both HEMA and styrene were detected at all sampling depths, including the outermost surface layer, consistent with the presence of discrete HEMA and styrene domains at the copolymer surface. Since both components are already present at the surface under hydrophobic conditions, the degree of restructuring this copolymer may undergo upon hydration should be minor. The random HEMA--styrene copolymer made by conventional free radical initiation techniques, HS-RAN50, had a surface composition that was similar to the bulk composition and independent of depth, as expected for a homogeneously mixed copolymer film.

Surface characterization of 2-hydroxyethyl methacrylate/styrene copolymers by angle-dependent X-ray photoelectron spectroscopy and static secondary ion mass spectrometry. Publishing Authors By Initials

DG Castner,BD Ratner,DW Grainger,SW Kim,T Okano,K Suzuki,D Briggs,S Nakahama,

For similar natural sciences: chemistry: chemistry, physical: surface properties research abstracts see: natural sciences: chemistry: chemistry, physical: surface properties research

PUBMED ID PMID:

MEDLINE DATE:

Surface characterization of 2-hydroxyethyl methacrylate/styrene copolymers by angle-dependent X-ray photoelectron spectroscopy and static secondary ion mass spectrometry. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Journal of biomaterials science. Polymer edition

VOLUME: 3

Page Numbers: 463-80

Journal Abbreviation:

ISSN: 0920-5063

DAY: 20

MONTH: 02

YEAR: 1992

Surface characterization of 2-hydroxyethyl methacrylate/styrene copolymers by angle-dependent X-ray photoelectron spectroscopy and static secondary ion mass spectrometry. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 9007393

Surface characterization of 2-hydroxyethyl methacrylate/styrene copolymers by angle-dependent X-ray photoelectron spectroscopy and static secondary ion mass spectrometry. Keywords Mesh Terms:

KEYWORDS: Surface Properties

MESH TERMS: chemistry

Chemical & Substance for Abstract: Surface characterization of 2-hydroxyethyl methacrylate/styrene copolymers by angle-dependent X-ray photoelectron spectroscopy and static secondary ion mass spectrometry. Information

Substance Name: hydroxyethyl methacrylate

Registry Number: 868-77-9

Grant and Affiliation Information for Surface characterization of 2-hydroxyethyl methacrylate/styrene copolymers by angle-dependent X-ray photoelectron spectroscopy and static secondary ion mass spectrometry.

AFFILIATION: Department of Chemical Engineering, University of Washington, Seattle 98195.

Country: NETHERLANDS

AGENCY: United States NCRR

GRANT: RR 01296

ACRONYM: RR

MEDLINETA: J Biomater Sci Polym Ed

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Surface characterization of 2-hydroxyethyl methacrylate/styrene copolymers by angle-dependent X-ray photoelectron spectroscopy and static secondary ion mass spectrometry Related Publications

• Behavioral and electrophysiological correlates during flash-frequency discrimination learning in monkeys.
• Dynamic CT of acute cholangitis: early inhomogeneous enhancement of the liver.
• Effects of stereotaxic thalamotomy on intractable pain and numbness. Preliminary report.
• Evaluation of hemodialysis efficiency by an edema fluid model.
• Influence of synchronized sleep upon spontaneous and induced discharges of single units in visual system.
• Surface characterization of 2-hydroxyethyl methacrylate/styrene copolymers by angle-dependent X-ray photoelectron spectroscopy and static secondary ion mass spectrometry.
• Variability of inter-spike intervals of cat's on-center optic tract fibres activated by steady light spot: a comparative study on X- and Y-fibres.