Title:
分散性が制御可能な乾燥ナノ結晶セルロース及びその制御方法
Document Type and Number:
Japanese Patent JP2013517352
Kind Code:
A
Abstract:
Dried nanocrystalline cellulose (NCC), in particular films of NCC, of controlled water dispersibility and a method to control the dispersibility of dried NCC by controlling electrolyte solution ionic strength and ion valency is described. Neutral M-NCC suspensions containing monovalent counterions (e.g., M=Na+, K+, NH4+, Et4N+) produced by neutralization of acid-form NCC (H-NCC) with the appropriate hydroxide, are readily dispersible in water when fully dried; this is in contrast to H-NCC. The dispersion of dried M-NCC in aqueous media is effectively prevented by a combination of (1) increased electrolyte concentration and ionic strength, and (2) higher valency of the cation component of the dissolved salt. Additionally, pre-treatment of dried M-NCC films with an electrolyte solution having a polyvalent cation, for example a divalent or trivalent cation is sufficient to prevent the subsequent dispersion of the M-NCC film in pure water.
Inventors:
Beck, Stephanie
Beaucher, Jean
Berry, richard
Beaucher, Jean
Berry, richard
Application Number:
JP2012549214A
Publication Date:
May 16, 2013
Filing Date:
January 18, 2011
Export Citation:
Assignee:
FP Innovations
International Classes:
C08B15/08; C09K23/00; C25B3/13
Domestic Patent References:
| JP2010018670A | 2010-01-28 | |||
| JPH11514310A | 1999-12-07 | |||
| JP2010202856A | 2010-09-16 |
Foreign References:
| US5470964A | 1995-11-28 |
Other References:
JPN6015008527; Ｔｈｅｒｍｏｃｈｉｍｉｃａ Ａｃｔａ ２６７, 1995, ３４３-３５３
Attorney, Agent or Firm:
Asamura patent office
Hideto Asamura
Hajime Asamura
Mari Yuge
Youichi Inoue
Hideto Asamura
Hajime Asamura
Mari Yuge
Youichi Inoue