Confocal Raman microscopy of morphological changes in poly(ethylene terephthalate) film induced by supercritical CO2

被引：18

作者：

Fleming, OS ^{[1
]}

Kazarian, SG ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, London SW7 2AZ, England

来源：

APPLIED SPECTROSCOPY | 2004年 / 58卷 / 04期

关键词：

polymers; Raman spectroscopy; crystallization; depth profiling; immersion; high-pressure carbon dioxide;

D O I：

10.1366/000370204773580211

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Poly(ethylene terephthalate) (PET) film was exposed to supercritical (sc) CO2 and confocal Raman microscopy was used to investigate the morphological changes induced. The study evaluates the use of oil and dry objectives in confocal mode to obtain depth profiles of PET film. These results were compared with the data obtained by mapping of the film cross-section. A significant gradient of degree of crystallinity normal to the surface of PET film down to 60 mum has been observed. The gradient of the degree of morphological changes are functions of exposure time and pressure.

引用

页码：390 / 394

页数：5

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