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Quantification of the degree of mixing of cellulose nanocrystals in thermoplastics using Raman spectroscopy
Journal of Raman spectroscopy, 2016-11, Vol.47 (11), p.1337-1342
Lewandowska, A. E.
Eichhorn, S. J.
2016
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Lewandowska, A. E.
Eichhorn, S. J.
Titel
Quantification of the degree of mixing of cellulose nanocrystals in thermoplastics using Raman spectroscopy
Ist Teil von
Journal of Raman spectroscopy, 2016-11, Vol.47 (11), p.1337-1342
Ort / Verlag
Bognor Regis: Blackwell Publishing Ltd
Erscheinungsjahr
2016
Quelle
Wiley Online Library - AutoHoldings Journals
Beschreibungen/Notizen
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 © 2016 John Wiley & Sons, Ltd. Raman imaging has been used as a non‐destructive method for the spatial quantification of the mixing process of cellulose nanocrystals (CNCs) in HDPE. A series of polyethylene‐based composites was prepared by melt compounding using freeze‐dried and spray‐dried CNCs as a nanofiller. The results confirmed that CNCs have a strong tendency to agglomerate. However, a certain degree of mixing between CNCs and HDPE is observed from Raman images and chemical images obtained by spectroscopy.
Sprache
Englisch
Identifikatoren
ISSN: 0377-0486
eISSN: 1097-4555
DOI: 10.1002/jrs.4966
Titel-ID: cdi_proquest_miscellaneous_1864543677
Format
–
Schlagworte
Agglomeration
,
Cellulose
,
cellulose nanocrystals
,
composites
,
Computer numerical control
,
Imaging
,
Nanocrystals
,
Polyethylenes
,
Raman imaging
,
Raman spectroscopy
,
thermoplastics
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