期刊
JOURNAL OF RAMAN SPECTROSCOPY
卷 47, 期 11, 页码 1337-1342出版社
WILEY-BLACKWELL
DOI: 10.1002/jrs.4966
关键词
Raman imaging; cellulose nanocrystals; composites; thermoplastics
类别
资金
- EU [604168]
A combination of Raman imaging with image analysis has been used to quantify the degree of mixing of cellulose nanocrystals (CNCs) in melt compounded high-density polyethylene (HDPE). Raman spectroscopy is shown to provide an accurate 'fingerprint' of the composition of the cross-sectional area of the end section of a formed composite. This information is then converted to a chemical image allowing spatial quantification of the mixing of CNCs in the HDPE. A degree of mixing between CNCs and HDPE is reported, with a strong tendency for the former to agglomerate with little dispersion. Freeze-dried CNCs show better mixing with HDPE and a lower tendency to agglomerate than spray-dried CNCs. This approach shows the potential to use Raman spectroscopy to quantify the degree of mixing of CNCs in a thermoplastic matrix. Copyright (C) 2016 John Wiley & Sons, Ltd.
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