Difficulties in the Use of Ground Bacterial Cellulose (BC) as Reinforcement of Polylactid Acid (PLA) Using Melt-Mixing and Extrusion Technologies

DOI: 10.4236/ojcm.2012.23011   PDF   HTML     3,388 Downloads   7,568 Views   Citations


Bacterial cellulose (BC) was ground to make the material suitable for compounding with polylactid acid (PLA). The content of BC in PLA was changed between 5 and 20 wt%. By increasing the BC content of the composite DSC measurements showed an increase of crystallinity (χ c ). Annealing at 90?C resulted in a further increase of χ c . Analysis of the dynamic mechanical behavior showed a sharp decline of the storage module (G’) above the glass transition temperature (T g ) while such a sharp decline did not occur for annealed samples. This indicates that the stiffness of PLA even above T g can be improved by BC and annealing.

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K. Ganß, A. Nechwatal, K. Frankenfeld and K. Schlufter, "Difficulties in the Use of Ground Bacterial Cellulose (BC) as Reinforcement of Polylactid Acid (PLA) Using Melt-Mixing and Extrusion Technologies," Open Journal of Composite Materials, Vol. 2 No. 3, 2012, pp. 97-103. doi: 10.4236/ojcm.2012.23011.

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The authors declare no conflicts of interest.


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