Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 35, Issue 19, Pages 1640-1645Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201400181
Keywords
Bacterial cellulose; mechanical properties; modeling; nanocomposites; polylactide
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Funding
- UK Engineering and Physical Sciences Research Council (EPSRC) [EP/J013390/1, EP/H00713X/1, EP/K014676/1]
- Imperial Innovations POC fund
- University of Vienna
- EPSRC [EP/J013390/1, EP/K014676/1, EP/K035274/1, EP/H00713X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K035274/1, EP/H00713X/1, EP/J013390/1, EP/C544838/1, EP/K014676/1] Funding Source: researchfish
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Bacterial cellulose (BC) is often regarded as a prime candidate nano-reinforcement for the production of renewable nanocomposites. However, the mechanical performance of most BC nanocomposites is often inferior compared with commercially available polylactide (PLLA). Here, the manufacturing concept of paper-based laminates is used, i.e., PaPreg, to produce BC nanopaper reinforced PLLA, which has been called nanoPaPreg by the authors. It is demonstrated that high-performance nanoPaPreg (v(f) = 65 vol%) with a tensile modulus and strength of 6.9 +/- 0.5 GPa and 125 +/- 10 MPa, respectively, can be fabricated. It is also shown that the tensile properties of nanoPaPreg are predominantly governed by the mechanical performance of BC nanopaper instead of the individual BC nanofibers, due to difficulties impregnating the dense nanofibrous BC network.
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