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Title: Chapter 1.1 Drying Cellulose Nanocrystal Suspensions

Source: In: Production and applications of Cellulose Nanomaterials, Chapter 1.1, TAPPI Press 2013; pp. 31-33.

Author(s)Peng, Yucheng; Gardner, Douglas J.; Han, Yousoo; Cai, Zhiyong; Tshabalala, Mandla A.

Publication Year: 2013  View PDF »

Category: Book Chapter
Associated Research Project(s):   FPL-4706-2B   FPL-4707-3B

Abstract: Drying cellulose nanocrystals (CNCs) while maintaining their nanoscale dimensions is a major challenge for uses which require a dry form of the material. Three methods were examined here to dry CNC suspensions: (1) air drying, (2) freeze drying (FD), and (3) spray-drying (SD). The effect of drying methods on the morphology, thermostability, and surface energy of CNCs was evaluated using scanning electron microscopy, thermogravimetric analysis, and inverse gas chromatography. Air-drying formed solidly packed CNCs. FD formed ribbon-like structures of CNCs with nanoscale thicknesses. SD formed particles with a size distribution ranging from nanometers to several microns. Freeze-dried CNCs had a lower dispersion component of surface energy than air-dried and spray-dried CNCs. The drying methods do not significantly affect the onset temperatures of thermal degradation of CNCs. Spray-drying is proposed as a technically suitable manufacturing process to dry CNC suspensions.

Keywords: Cellulose nanocrystals; Drying

Publication Review Process: Non-Refereed (Other)

File size: 2,826 kb(s)

Date posted: 09/16/2013
RITS Product ID: 65245
Current FPL Scientists associated with this product (listed alphabetically)
Cai, Zhiyong
Supervisory Research Materials Engineer
Tshabalala, Mandla A.
Research Chemist

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