Photo-oxidative degradation in polyisoprene: Surface characterization and analysis by atomic force microscopy

Jolanta A Blach; Gregory S Watson; W K Busfield; S Myhra

doi:10.1002/pi.780

Back

Photo-oxidative degradation in polyisoprene: Surface characterization and analysis by atomic force microscopy

Journal article

Peer reviewed

Photo-oxidative degradation in polyisoprene: Surface characterization and analysis by atomic force microscopy

Jolanta A Blach, Gregory S Watson, W K Busfield and S Myhra

Polymer International, Vol.51(1), pp.12-20

2002

DOI: https://doi.org/10.1002/pi.780

Files and links (1)

url

https://doi.org/10.1002/pi.780View

Published Version

Abstract

polyisoprene

UV degradation

surface adhesion

surface stiffness

atomic force microscopy

Surface adhesion and surface mechanical properties of natural rubber cast films have been investigated by atomic force microscopy (AFM) before and after UV irradiation. Analysis in the force versus distance (F-d) mode probed changes in tip-to-surface adhesion. Adhesion was observed to increase as a result of exposure, in accord with the prediction that generation of polar groups in the surface should promote a hydrophilic transition. The hydrophilicity also gives rise to a stronger adhesive contribution from a meniscus force, as demonstrated by comparison of results obtained in air for irradiated and as-received samples. Calculated values of work of adhesion, based on the Johnson-Kendall-Roberts model, reflected the changes in surface chemistry and the effects of the fluid environment. The outcomes of F-d analyses revealed both tip indentation and polymer extension; the former was fitted to expressions derived from the Snedden formalism, followed by calculation of an effective Young's modulus. Good agreement was obtained for as-received surfaces with bulk measurements. The photochemistry predicts chain scission events which are likely to account for the observed softening of the polymer. © 2001 Society of Chemical Industry.

Details

Title: Photo-oxidative degradation in polyisoprene: Surface characterization and analysis by atomic force microscopy
Authors: Jolanta A Blach (Author) - Griffith University
Gregory S Watson (Author) - Griffith University
W K Busfield (Author) - Griffith University
S Myhra (Author) - Griffith University
Publication details: Polymer International, Vol.51(1), pp.12-20
Publisher: John Wiley & Sons Ltd.
Date published: 2002
DOI: 10.1002/pi.780
ISSN: 0959-8103
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99449373102621
Output Type: Journal article

Metrics

585 Record Views

28 Times Cited - Web of Science

InCites Highlights

These are selected metrics from InCites Benchmarking & Analytics tool, related to this output

Web Of Science research areas: Polymer Science