Note

Cellulose

, Volume 20, Issue 4, pp 2175-2178

First online:

Aqueous pretreatment for reactive ball milling of cellulose

  • Pei HuangAffiliated withInstitute of Chemistry, Chinese Academy of SciencesTechnical Institute of Physics and Chemistry, Chinese Academy of SciencesGraduate School, Chinese Academy of Sciences
  • , Min WuAffiliated withTechnical Institute of Physics and Chemistry, Chinese Academy of Sciences Email author 
  • , Shigenori KugaAffiliated withDepartment of Biomaterials Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo Email author 
  • , Yong HuangAffiliated withInstitute of Chemistry, Chinese Academy of SciencesTechnical Institute of Physics and Chemistry, Chinese Academy of Sciences Email author 

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Abstract

Aqueous swelling pretreatment of cellulose was found highly effective for reactive ball milling to prepare surface-esterified cellulose nanofibers. Compared with starting from dry cellulose, water- or 2 % NaOH-pre-swollen materials were esterified and dispersed in significantly shorter milling time. Especially commercial kraft pulp was difficult to disperse even with water pretreatment, but 2 % NaOH treatment gave full surface esterification with a bulk degree of substitution of 0.69 by 12-h ball milling, presumably because of removal of non-cellulosic components.

Keywords

Cellulose nanofiber Aqueous pretreatment Reactive ball milling Mechanochemistry