eprintid: 1334033 rev_number: 42 eprint_status: archive userid: 608 dir: disk0/01/33/40/33 datestamp: 2011-12-21 19:37:44 lastmod: 2021-12-16 23:30:24 status_changed: 2017-05-17 12:15:23 type: article metadata_visibility: show item_issues_count: 0 creators_name: Quesada Cabrera, R creators_name: Meersman, F creators_name: McMillan, PF creators_name: Dmitriev, V title: Nanomechanical and structural properties of native cellulose under compressive stress ispublished: pub divisions: UCL divisions: B04 divisions: C06 divisions: F56 note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. abstract: Cellulose is an important biopolymer with applications ranging from its use as an additive in pharmaceutical products to the development of novel smart materials. This wide applicability arises in part from its interesting mechanical properties. Here we report on the use of high pressure X-ray diffraction and Raman spectroscopy in a diamond anvil cell to determine the bulk and local elastic moduli of native cellulose. The modulus values obtained are 20 GPa for the bulk modulus and 200-355 and 15 GPa for the crystalline parts and the overall elastic (Young's) modulus, respectively. These values are consistent with those calculated from tensile measurements. Above 8 GPa, the packing of the cellulose chains within the fibers undergoes significant structural distortion, whereas the chains themselves remain largely unaffected by compression. date: 2011-04-11 official_url: http://doi.org/10.1021/bm200253h vfaculties: VMPS oa_status: green full_text_type: other language: eng primo: open primo_central: open_green verified: verified_manual elements_source: PubMed elements_id: 358268 doi: 10.1021/bm200253h lyricists_name: McMillan, Paul lyricists_name: Quesada Cabrera, Raul lyricists_id: PFMCM40 lyricists_id: RQUES57 full_text_status: public publication: Biomacromolecules volume: 12 number: 6 pagerange: 2178-2183 event_location: United States issn: 1526-4602 citation: Quesada Cabrera, R; Meersman, F; McMillan, PF; Dmitriev, V; (2011) Nanomechanical and structural properties of native cellulose under compressive stress. Biomacromolecules , 12 (6) pp. 2178-2183. 10.1021/bm200253h <https://doi.org/10.1021/bm200253h>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/1334033/1/McMillan_Cellulose_revised_080420112.pdf