β-CHITIN NANOFIBER AND PRODUCTION METHOD THEREOF

Title:

β-CHITIN NANOFIBER AND PRODUCTION METHOD THEREOF

Document Type and Number:

Japanese Patent JP2016027140

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide β-chitin nanofiber which is defibrated to a chitin microfibril unit in a uniform state, and a production method of β-chitin powder which can be preferably used for production of the β-chitin nanofiber.SOLUTION: A method for producing a β-chitin powder comprises, in which a β-chitin-containing material is a starting material: (a) a step for deproteinizing the β-chitin-containing material using alkali; (b) a step for decalcifying the material using acid; (c) a step for drying a processed product obtained in the step (b); and (d) a step for dry milling the dried matter obtained in the step (c), the steps are performed in the order of (a),(b),(c),(d), thereby the β-chitin powder is produced. Then the β-chitin powder is subjected to wet type defibrating processing, for acquiring β-chitin nanofiber whose fiber diameter is 3 nm-20 nm, whose average molecular weight is 10 kDa or higher and less than 100 kDa, or 100 kDa-1400 kDa.SELECTED DRAWING: Figure 6

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Inventors:

TOTANI KAZUHIDE
NIKAIDO MITSURU
OSADA MITSUMASA
KOSEKI KENICHI
KOHAMA KEIKO
ITO YOSHIHITO
TAKAHASHI TORU
TASHIRO KATSUO
YAMASHITA KAZUHIKO
NARUHIRO KAZUE
TANIGUCHI TAKAO
KONO HIROYUKI

Application Number:

JP2015129301A

Publication Date:

February 18, 2016

Filing Date:

June 26, 2015

Export Citation:

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Assignee:

INST NAT COLLEGES TECH JAPAN
IWATE IND RES CT
YAEGAKI HAKKO GIKEN KK

International Classes:

C08B37/08

Domestic Patent References:

JP5152782B2	2013-02-27
JP2013136699A	2013-07-11
JPH04134035A	1992-05-07
JP2006321961A	2006-11-30
JP2007097466A	2007-04-19
JP2010241713A	2010-10-28
JP5186694B2	2013-04-17

Attorney, Agent or Firm:

Takashima Ichi
Kyoko Doi
Mitsunori Kamata
Yaeko Tamura
Murata Miyuki
Junzo Koike
Hirofumi Toma
Masumi Takei

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