Dr Marta Martinez-Sanz
Postdoctoral Research Fellow
Location - Lucas Heights Campus
Role at ANSTO
Marta joined the Bragg Institute in October 2013 as a joint postdoctoral research fellow at ANSTO and the University of Queensland, working in the Food Science project supervised by Dr. Elliot Gilbert and Prof. Mike Gidley. Plant cell walls are complex structures in which cellulose, the main structural component, interacts with several other biopolymers such as hemicelluloses, lignin and proteins.
Using scattering and diffraction methods, the hierarchical architecture of plant cell walls and model systems, involving the use of bacterial cellulose, will be studied. This will complement spectroscopic, rheological and microscopic studies being undertaken at UQ.
Marta completed her Ph.D. on the application of bacterial cellulose nanocrystals for the development of biopolymeric materials at the Institute of Agrochemistry and Food Technology (Spain). Her work focused on the characterization of bacterial cellulose nanocrystals and optimization of the extraction process, the development of novel routes for the successful incorporation of these nanocrystals into biopolymeric matrices and the investigation of films based on bacterial cellulose nanocrystals as high barrier materials for food packaging applications.
Additionally, she worked on the utilisation of food industry by-products, such as wheat straw for the extraction of cellulose nanocrystals and poultry feathers for the extraction of keratin nanofillers. She used novel processing techniques such as electrospinning and solution blow spinning and characterization techniques such as scanning electron microscopy, transmission electron microscopy, differential scanning calorimetry, thermogravimetric analysis, x-ray diffraction, FT-IR, tensile testing and water and oxygen barrier assessment.
Qualifications and achievements
- Ph.D. in Food Science, CSIC/Polytechnic University of Valencia, 2013
- MSc (Hons) in Chemical Engineering, Polytechnic University of Valencia, 2008
M. Martínez-Sanz, M. Villano, C. Oliveira, M.G.E. Albuquerque, M. Majone, M. Reis, A. López-Rubio and J.M. Lagaron, “Characterization of polyhydroxyalkanoatessynthesized synthesized from microbial mixed cultures and of their nanobiocomposites with bacterial cellulose nanowhiskers”, New Biotechnology, in press (2013).
P. Pardo-Ibáñez, A. López-Rubio, M. Martínez-Sanz, L. Cabedo and J.M. Lagaron, “Keratin-polyhydroxyalkanoate melt-compounded composites with improved barrier properties of interest in food packaging applications”, Journal of Applied Polymer Science, in press (2013).
M. Martínez-Sanz, A. López-Rubio and J.M. Lagaron, “High barrier coated bacterial cellulose nanowhiskers films with reduced moisture sensitivity”, Carbohydrate Polymers, 98:1072-1082 (2013).
M. Martínez-Sanz, M.A. Abdelwahab, A. Lopez-Rubio, J.M. Lagaron, E. Chiellini, T.G. Williams, D.F. Wood, W.J. Orts and S.H. Imam, “Incorporation of poly(glycidylmethacrylate) grafted bacterial cellulose nanowhiskers in poly(lactic acid) nanocomposites: improved barrier and mechanical properties”, European Polymer Journal, 49:2062-2072 (2013).
M. Martínez-Sanz, A. López-Rubio and J.M. Lagaron, “Nanocomposites of ethylene vinyl alcohol copolymer with thermally resistant cellulose nanowhiskers by melt compounding (II): Water barrier and mechanical properties”, Journal of Applied Polymer Science, 128:2197-2207 (2013).
M. Martínez-Sanz, A. López-Rubio and J.M. Lagaron, “Nanocomposites of ethylene vinyl alcohol copolymer with thermally resistant cellulose nanowhiskers by melt compounding (I): Morphology and thermal properties”, Journal of Applied Polymer Science, 128:2666-2678 (2013).
M. Martínez-Sanz, A. López-Rubio and J.M. Lagaron, “Optimization of the dispersion of unmodified bacterial cellulose nanowhiskers into polylactide via melt compounding to significantly enhance barrier and mechanical properties”, Biomacromolecules, 11:3887-3899 (2012).
M. Martínez-Sanz, R.T. Olsson, A. López-Rubio and J.M. Lagaron, “Incorporating dispersed bacterial cellulose nanowhiskers by electrospinning into EVOH by melt blending”, Journal of Applied Polymer Science, 124:1398-1408 (2012).
M. Martínez-Sanz, A. López-Rubio and J.M. Lagaron, “Optimization of the nanofabrication by acid hydrolysis of bacterial cellulose nanowhiskers”, Carbohydrate Polymers, 85:228-236 (2011).
M. Martínez-Sanz, R.T. Olsson, A. López-Rubio and J.M. Lagaron, “Development of electrospun EVOH fibres reinforced with bacterial cellulose nanowhiskers. Part I: Characterization and method optimization”, Cellulose, 18:335-347 (2011).
F. Vilaplana, M. Martínez-Sanz, A. Ribes-Greus and S. Karlsson, “Emission pattern of semi-volatile organic compounds from recycled styrenic polymers using headspace solid-phase microextraction gas chromatography - mass spectrometry (HS-SPME-GC-MS)”, Journal of Chromatography A, 1217:359-367 (2010).