Bulk cellulose plastic materials from processing cellulose powder using back pressure-equal channel angular pressing |
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Authors: | Xiaoqing Zhang Xiaolin WuDachao Gao Kenong Xia |
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Institution: | a CSIRO Materials Science and Engineering, Private Bag 33, Clayton South MDC, Clayton South, VIC 3169, Australia b Department of Mechanical Engineering, The University of Melbourne, VIC 3010, Australia |
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Abstract: | Bulk cellulose plastic materials with a continuous morphology were successfully processed from cellulose powder through back pressure-equal channel angular pressing (BP-ECAP) at 150 °C without using any additives. The strong shear deformation during the process caused an efficient deformation of cellulose granular and crystalline structures, resulting in effective chain penetration and strong intermolecular interactions throughout the whole material. The mechanical behaviour of the cellulose plastics was comparable to those of polymer/cellulose composites. Ball milling the cellulose powder prior to processing disrupted the crystalline structures thus resulting in more significant modifications of the molecular motions of the cellulose. The outcome of this research provides a potential methodology for manufacturing renewable and biodegradable bulk materials from cellulose-based agricultural waste. |
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Keywords: | Cellulose Renewable natural polymers Crystalline structures Polymer processing Equal channel angular pressing |
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