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The Scientific World Journal
Volume 2014, Article ID 127506, 4 pages
http://dx.doi.org/10.1155/2014/127506
Research Article

Novel Synthesis of Cellulose-Based Diblock Copolymer of Poly(hydroxyethyl methacrylate) by Mechanochemical Reaction

1Faculty of Agriculture, Meijo University, 1-501, Shiogamaguchi, Nagoya 468-8502, Japan
2Institute for Environmental Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan

Received 18 December 2013; Accepted 2 February 2014; Published 4 March 2014

Academic Editors: Z. Ma, E. Odermatt, and T. K. Vaidyanathan

Copyright © 2014 Takeshi Ohura et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The mechanical fracture of polymer produces polymeric free radical chain-ends, by which liner block copolymers have been synthesized. A diblock copolymer of microcrystalline cellulose (MCC) and poly 2-hydroxyethyl methacrylate (pHEMA) was produced by the mechanochemical polymerization under vacuum and room temperature. The fraction of pHEMA in MCC-block-pHEMA produced by the mechanochemical polymerization increased up to 21 mol% with increasing fracture time (~6 h). Then, the tacticities of HEMA sequences in MCC-block-pHEMA varied according to the reaction time. In the process of mechanochemical polymerization, cellulose could play the role of a radical polymerization initiator capable of controlling stereoregularity.