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Table 1 Frequencies of different methods reported in the literature for measuring the crystallinity index of commercial celluloses.

From: Cellulose crystallinity index: measurement techniques and their impact on interpreting cellulase performance

Instrument

Analysis technique

Frequency, %

XRD

Peak height

70 to 85

 

Peak deconvolution

5 to 10

 

Amorphous subtraction

5 to 10

NMR

C4 peak separation

5 to 10

  1. NMR, nuclear magnetic resonance; XRD, X-ray diffraction.
  2. About 80 articles (30 for Avicel PH-101 and 50 for other commercial celluloses) were analyzed in this study.