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

Noriko Hayashi, Tetsuo Kondo

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Citations (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.

Original languageEnglish
Title of host publicationHandbook of Polymer Nanocomposites. Processing, Performance and Application
Subtitle of host publicationVolume C: Polymer Nanocomposites of Cellulose Nanoparticles
PublisherSpringer Berlin Heidelberg
Number of pages14
ISBN (Electronic)9783642452321
ISBN (Print)9783642452314
Publication statusPublished - Jan 1 2015

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy
  • General Engineering
  • General Materials Science


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