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Licensed Unlicensed Requires Authentication Published by De Gruyter November 1, 2018

Crill: A novel technique to characterize nano-ligno-cellulose

  • Sinke H. Osong EMAIL logo , Sven Norgren , Per Engstrand , Mathias Lundberg and Peter Hansen


The CrillEye is a technique for qualitatively assessing loose slender and fibrillar particles created during pulping. It has also been demonstrated that the crill measurement technique can easily be used to measure the degree of fibrillation of mechanical pulp based nano-ligno-cellulose (NLC). The measurement technique is based on an optical response of a suspension at two wavelengths of light; UV and IR. The UV light contains information on both fibres and crill, while IR only contains information on fibres. The resolution on the CrillEye module is based on optical response of the pulp and on an analogue signal analysis making it concentration independent. Characterization of particlesize distribution of nano-ligno-cellulose is both important and challenging. The objective of the work presented in this paper was to study the crill values of TMP and CTMP based nano-ligno-celluloses as a function of homogenization time. Results showed that the crill value of both TMP-NLC and CTMP-NLC correlated fairly well with the homogenization time.

Received: 2013-09-11
Accepted: 2013-11-27
Published Online: 2018-11-01
Published in Print: 2014-05-01

© 2018 by Walter de Gruyter Berlin/Boston

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