期刊
SURFACE AND INTERFACE ANALYSIS
卷 33, 期 5, 页码 455-458出版社
WILEY
DOI: 10.1002/sia.1226
关键词
ToF-SIMS; inter-diffusion; PMMA; PVDF; chemical imaging
A laminate was prepared by laminating a poly(vinylidene fluoride) (PVDF) disc and a poly(methyl methacrylate) (PMMA) disc using compression moulding. Both PVDF and PMMA are miscible polymers. Time-of-flight secondary ion mass spectrometry (ToF-SIMS) chemical images were used to investigate inter-diffusion between the PVDF and PMMA during lamination at 200degreesC and 16 MPa. Negative ToF-SIMS chemical images clearly revealed the presence of inter-diffusion between the PVDF and PMMA. Both the lamination time and the PMMA molecular weight could significantly influence the inter-diffusion distance. As the lamination time increased, the inter-diffusion distance increased significantly. In addition, as the PMMA molecular weight decreased, the inter-diffusion distances also increased markedly due to the decrease in viscosity of the PMMA. Copyright (C) 2002 John Wiley Sons, Ltd.
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