期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 127, 期 6, 页码 4296-4304出版社
WILEY-BLACKWELL
DOI: 10.1002/app.38034
关键词
hydrogels; macroporous polymers; morphology; poly(2-hydroxyethyl methacrylate); laser scanning confocal microscopy
资金
- Australian Research Council
- Australian Postgraduate Award
- University of Western Australia
- Curtin University of Technology
- Australian Government
- State Government of Western Australia
The internal morphologies for a series of heterogeneous PHEMA and P[HEMA-co-MeO-PEGMA] [PHEMA = poly(2-hydroxyethyl methacrylate), MeO-PEGMA = poly(ethylene glycol) methyl ether methacrylate] hydrogels were characterized by scanning electron microscopy (SEM) in conjunction with a sample drying procedure, and by laser scanning confocal microscopy (LSCM) without prior drying. Compared to SEM, LSCM was far simpler and more rapid technique for imaging hydrogels. LSCM also allowed the native hydrated morphology of the hydrogels to be characterized, whereas SEM could only characterize the morphology of samples in their dehydrated state. No dehydration method used in this study preserved the true native morphology, but plunge freezing/freeze drying was the most suitable method that best preserved the native morphology for all hydrogel compositions. Refrigerated freezing/freeze-drying and critical point drying introduced significant morphological artifacts, the severity of the artifacts being dependant on the sample's composition and Tg. (c) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
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