title: Novel method for producing amorphous cellulose only by milling.
abstract: The present study investigated a novel method for producing amorphous cellulose by milling without adding water. A new type of milling machine was developed (called a shear and cooling milling machine (SCMM)), which was capable of applying mechanical shear and cooling during the milling process. The SCMM consisted of a pair of mortars attached to a servomotor and a ring cooler. Wide-angle X-ray diffraction (WAXD) analysis was used to determine the cellulose crystallinity in samples produced using the SCMM at different milling temperatures. The results of WAXD for cellulose powder milled at lower temperatures exhibited no diffraction peaks. This experimental result demonstrates that the SCMM produces amorphous cellulose easily by cooled milling without the addition of water. The milling conditions, such as the applied shear and cooling, can be used to control the crystallinity of cellulose.
authors: Department of Polymer Science and Engineering, Yamagata University, 4-13-16 Jonan, Yonezawa, Japan.
authors: Ryoichiro
authors: R
authors: Shimura
authors: Department of Polymer Science and Engineering, Yamagata University, 4-13-16 Jonan, Yonezawa, Japan. Electronic address: nishioka@yz.yamagata-u.ac.jp.
authors: Akihiro
authors: A
authors: Nishioka
authors: Department of Polymer Science and Engineering, Yamagata University, 4-13-16 Jonan, Yonezawa, Japan.
authors: Ichiro
authors: I
authors: Kano
authors: Department of Polymer Science and Engineering, Yamagata University, 4-13-16 Jonan, Yonezawa, Japan.
authors: Tomonori
authors: T
authors: Koda
authors: Department of Polymer Science and Engineering, Yamagata University, 4-13-16 Jonan, Yonezawa, Japan.
authors: Taichi
authors: T
authors: Nishio
keywords: Amorphous cellulose; Controlled crystallinity; Cooled milling; Wide-angle X-ray diffraction