1997 ASU electron microscopy workshop - Energy-loss measurements of polymer microstructure and polymer interfaces: Issues and opportunities

被引:17
作者
Siangchaew, K [1 ]
Libera, M [1 ]
机构
[1] Stevens Inst Technol, Dept Mat Sci & Engn, Hoboken, NJ 07030 USA
关键词
electron energy-loss spectroscopy (EELS); spatially resolved EELS; polymer microstructure; polymer interfaces; PPS/PET; nylon; 6; HDPE; PS/PE;
D O I
10.1017/S1431927697970410
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The traditional methods for studying polymer microstructure in the transmission electron microscope largely hinge on the use of differential heavy-element staining to induce amplitude contrast. However, adequate staining agents are not available for all polymer systems. Furthermore, nonlinearities in the distribution of stain, particularly at interfaces, degrade the achievable resolution. Spatially resolved electron energy loss spectroscopy (EELS), on the other hand, provides a new opportunity to study polymer microstructure by providing rich spectroscopic features and high spatial resolution. Translating this opportunity into practice is underpinned by three main factors: (1) the availability of spectral fingerprints distinguishing various polymers; (2) the limits of achievable resolution; and (3) the ultimate constraints imposed by electron irradiation. This study discusses these issues and demonstrates the use of spatially resolved EELS with examples from hydrocarbon homopolymer and homopolymer blends of polyphenylene sulfide (PPS) and polyethylene terephthalate (PET), nylon 6/high-density polyethylene (HDPE) and polystyrene/polyethylene (PS/PE).
引用
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页码:530 / 539
页数:10
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