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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Kiziltas, Esra Erbas Kiziltas, Alper Bollin, Shannon C. Gardner, Douglas J. |
| Description | Author Affiliation: Kiziltas EE ( Advanced Structures and Composites Center, University of Maine, Orono, ME 04469, USA); Kiziltas A ( Advanced Structures and Composites Center, University of Maine, Orono, ME 04469, USA); Bollin SC ( Research and Advanced Engineering, Ford Motor Co., Dearborn, MI 48124, USA.); Gardner DJ ( Advanced Structures and Composites Center, University of Maine, Orono, ME 04469, USA.) |
| Abstract | Nanocomposites of polymethylmethacrylate (PMMA) and cellulose were made by a solution casting method using acetone as the solvent. The nanofiber networks were prepared using three different types of cellulose nanofibers: (i) nanofibrillated cellulose (NFC), (ii) cellulose nanocrystals (CNC) and (iii) bacterial cellulose from nata de coca (NDC). The loading of cellulose nanofibrils in the PMMA varied between 0.25 and 0.5 wt%. The mechanical properties of the composites were evaluated using a dynamic mechanical thermal analyzer (DMTA). The flexural modulus of the nanocomposites reinforced with NDC at the 0.5 wt% loading level increased 23% compared to that of pure PMMA. The NFC composite also exhibited a slightly increased flexural strength around 60 MPa while PMMA had a flexural strength of 57 MPa. The addition of NDC increased the storage modulus (11%) compared to neat PMMA at room temperature while the storage modulus of PPMA/CNC nanocomposite containing 0.25 and 0.5 wt% cellulose increased about 46% and 260% to that of the pure PMMA at the glass transition temperature, respectively. Thermogravimetric analysis (TGA) indicated that there was no significant change in thermal stability of the composites. The UV-vis transmittance of the CNF nanocomposites decreased by 9% and 27% with the addition of 0.25 wt% CNC and NDC, respectively. This work is intended to spur research and development activity for application of CNF reinforced PMMA nanocomposites in applications such as: packaging, flexible screens, optically transparent films and light-weight transparent materials for ballistic protection. |
| File Format | HTM / HTML |
| ISSN | 01448617 |
| Volume Number | 127 |
| e-ISSN | 18791344 |
| Journal | Carbohydrate Polymers |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2015-01-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Biochemistry__semicolon__materials Discipline Science Cellulose Chemistry Nanocomposites Polymethyl Methacrylate Acetobacter Metabolism Acetone Biosynthesis Solvents Journal Article Research Support, Non-u.s. Gov't Research Support, U.s. Gov't, Non-p.h.s. |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Materials Chemistry Polymers and Plastics |
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