Enzymatically produced nano-ordered elements containing cellulose Iβ crystalline domains of cladophora cellulose

Noriko Hayashi, Tetsuo Kondo

研究成果: Chapter in Book/Report/Conference proceedingChapter

3 被引用数 (Scopus)


This chapter describes a novel top-down type extraction method of nano-cellulose using enzymatic hydrolysis of microcrystalline cellulose fibers com-prising two crystalline allomorphs of cellulose, Ia and Ib. In this method, the key issue was the selective removal of cellulose Ia phases by preferential hydrolysis of Trichoderma cellulase [1]. This selective hydrolysis process provided short IR analyses revealed that the “nano-element” was highly crystalline, similar to the untreated microcrystalline cellulose, and mostly consisted of the Ip phase. The average length of the elements was ca. 350 nm, which corresponded to the value due to the degree of polymerization of 690 for b-glucan molecular chains obtained by size-exclusion chromatographic analysis. The close agreement indicates that individual molecular chains may be extended in the longitudinal direction of the obtained element. These characteristic nano-elements have the potential to play a role of nano-ordered particles and may be useful as fillers to enhance the mechanical properties of various materials.

ホスト出版物のタイトルHandbook of Polymer Nanocomposites. Processing, Performance and Application
ホスト出版物のサブタイトルVolume C: Polymer Nanocomposites of Cellulose Nanoparticles
出版社Springer Berlin Heidelberg
出版ステータス出版済み - 1 1 2015

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Engineering(all)
  • Materials Science(all)

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