Milling in Seconds Accelerates Acetylation of Cellulose in Hours | Zendy

Bungo Ochiai | Zendy; Toshiya Watanabe | Zendy; Chikako Hanzawa | Zendy; Koki Akiyama | Zendy; Yoshimasa Matsumura | Zendy; Ryoichiro Shimura | Zendy; T. Koda | Zendy; Akihiro Nishioka | Zendy

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Milling in Seconds Accelerates Acetylation of Cellulose in Hours

Author(s) -

Bungo Ochiai,

Toshiya Watanabe,

Chikako Hanzawa,

Koki Akiyama,

Yoshimasa Matsumura,

Ryoichiro Shimura,

T. Koda,

Akihiro Nishioka

Publication year - 2019

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.9b02422

Subject(s) - cellulose , crystallinity , acetylation , amorphous solid , chemical engineering , hydrogen bond , catalysis , materials science , chemistry , organic chemistry , polymer chemistry , composite material , molecule , biochemistry , engineering , gene

A new sustainable synthetic method for cellulose acetate was developed by a combination of I 2 -catalyzed solid-liquid acetylation of cellulose and a milling process reducing the crystallinity of cellulose within a few seconds. Milled low-crystalline cellulose was acetylated faster than the original cellulose with higher crystallinity. The plausible factors of acceleration were the conversion of the hydroxy group in hydrogen bonds into reactive ones and the efficient formation of the catalytic species I + by the enhanced formation of I 3 - assisted by the amorphous domain of the milled cellulose, while the morphological and structural changes were ignorable.

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