Mechanically adaptive cellulose modified with supra-molecular switch

Hongsheng Luo, Jinlian Hu, Yong Zhu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


Natural cellulose features the stability in supramolecular structure and the resistance to external stimulus. Molecular approach enables desired intelligence to achieve for the most abundant natural polymer. Ureidopyrimidinone (UPy), a thermally reversible quadruple hydrogen bonding unit, was introduced into natural cellulose as pendent sidegroup via homogeneous cellulose / Lithium chloride (LiCl) / N, N-dimethylacetamide (DMAc) solution. Modified cellulose films with UPy units were prepared by coagulation method. The structure of the modified cellulose was confirmed by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR). The crystallinity was further measured by wide X-ray diffraction (WXRD). Dynamic mechanic analysis (DMA) disclosed that the modified cellulose was mechanically adaptive, exhibiting reversible variation in modulus when triggered by temperature. This finding may be potentially used to develop novel intelligent textiles responsive to thermal stimuli.
Original languageEnglish
Title of host publicationFiber Society Spring 2011 Conference
PublisherHong Kong Polytechnic University
Number of pages1
Publication statusPublished - 1 Jan 2011
Event2011 Spring Conference of the Fiber Society - , Hong Kong
Duration: 23 May 201125 May 2011


Conference2011 Spring Conference of the Fiber Society
Country/TerritoryHong Kong

ASJC Scopus subject areas

  • General Materials Science


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