Skip to content
Accessible Unlicensed Requires Authentication Published by De Gruyter June 25, 2016

Effect of PHB on the properties of biodegradable PLA blends

Zuzana Vanovčanová, Pavol Alexy, Jozef Feranc, Roderik Plavec, Ján Bočkaj, Leona Kaliňáková, Katarína Tomanová, Dagmara Perďochová, Dávid Šariský and Ivana Gálisová
From the journal Chemical Papers

Abstract

Blends of biodegradable polymers polylactic acid/thermoplastic starch/polyhydroxybutyrate (PLA/TPS/PHB) were prepared using a twin-screw extruder. The TPS content was constant (50 %) and the PHB content in the blends was gradually changed from 0 mass % to 20 mass %. TPS was prepared by melting, where a mixture of native starch, water and glycerol was fed into the twin-screw extruder. Average temperature of extrusion was 180 °C and the concentration of glycerol was 40 mass %. Influence of the PHB concentration in the blend and that of the processing technology on the mechanical and rheological properties of the PLA/PHB composition containing TPS were studied. Mechanical properties were measured 24 h after the film and monofilament preparation and also after the specific storage time to study the effect of storage on the properties. The results indicate that differences in morphology strongly influence the mechanical properties of the studied materials with identical material composition.

Acknowledgements

This work was supported by the Slovak Research and Development Agency (project no. APVV-14-0301).

References

Abdelwahab, M. A., Flynn, A., Chiou, B. S., Imam, S., Orts, W., & Chiellini, E. (2012). Thermal, mechanical and morphological characterization of plasticized PLA–PHB blends. Polymer Degradation and Stability, 97, 1822–1828. 10.1016/j.polymdegradstab.2012.05.036.Search in Google Scholar

Armentano, I., Fortunati, E., Burgos, N., Dominici, F., Luzi, F., Fiori, S., Jiménez, A., Yoon, K., Ahn, J., Kang, S., & Kenny, J. M. (2015). Bio-based PLA_PHB plasticized blend films: Processing and structural characterization. LWT - Food Science and Technology, 64, 980–988. 10.1016/j.lwt.2015.06.032.Search in Google Scholar

Asrar, J., & Gruys, K. J. (2002). Biodegradable polymer (Biopol). In Y. Doi, & A. Steinbuchel (Eds.), Polyesters III: Applications and commercial products (Series: Biopolymers, Vol. 4, Chapter 3, pp. 53–90). Weinheim, Germany: Wiley.Search in Google Scholar

El-Hadi, A. M. (2011). The effect of annealing treatments on spherulitic morphology and physical ageing on glass transition of poly lactic acid (PLLA). Materials Sciences and Applications, 2, 439–443. 10.4236/msa.2011.25058.Search in Google Scholar

Jang, W. Y., Shin, B. Y., Lee, T. J., & Narayan, R. (2007). Thermal properties and morphology of biodegradable PLA/starch compatibilized blends. Journal of Industrial and Engineering Chemistry, 13, 457–464.Search in Google Scholar

Kwon, M., Lee, S. C., & Jeong, Y. G. (2010). Influences of physical ageing on enthalpy relaxation behavior, gas permeability, and dynamic mechanical property of polylactide films with various D-isomer contents. Macromolecular Research, 18, 346–351. 10.1007/s13233-010-0410-7.Search in Google Scholar

Lai, S. M., Don, T. M., & Huang, Y. C. (2006). Preparation and properties of biodegradable thermoplastic starch/poly(hydroxy butyrate) blends. Journal of Applied Polymer Science, 100, 2371–2379. 10.1002/app.23085.Search in Google Scholar

Morales, M., Dapsens, P. Y., Giovinazzo, I., Witte, J., Mon-delli, C., Papadokonstantakis, S., Hungerbühler, K., & Pérez-Ramírez, J. (2015). Environmental and economic assessment of lactic acid production from glycerol using cascade bio- and chemocatalysis. Energy & Environmental Science, 8, 558– 567. 10.1039/c4ee03352c.Search in Google Scholar

Nafchi, A. M., Moradpour, M., Saeidi, M., & Alias, A. K. (2013). Thermoplastic starches: Properties, challenges, and prospects. Starch/Stärke, 65, 61–72. 10.1002/star. 201200201.Search in Google Scholar

Niaounakis, M. (2015). Biopolymers: Applications and trends. Oxford, UK: William Andrew Publishing.Search in Google Scholar

Pachekoski, W. M., Agnelli, J. A. M., & Belem, L. P. (2009). Thermal, mechanical and morphological properties of poly (hydroxybutyrate) and polypropylene blends after processing. Materials Research, 12, 159–164. 10.1590/s1516-14392009000200008.Search in Google Scholar

Park, J. W., Doi, Y., & Iwata, T. (2004). Uniaxial drawing and mechanical properties of poly [(R)-3-hydroxybutyrate]/poly (L-lactic acid) blends. Biomacromolecules, 5, 1557–1566. 10.1021/bm049905l.Search in Google Scholar

Reis, K. C., Pereira, J., Smith, A. C., Carvalho, C. W. P., Wellner, N., & Yakimets, I. (2008). Characterization of polyhydroxybutyrate-hydroxyvalerate (PHB-HV)/maize starch blend films. Journal of Food Engineering, 89, 361– 369. 10.1016/j.jfoodeng.2008.04.022.Search in Google Scholar

Ren, J. (2011). Biodegradable poly (lactic acid): Synthesis, modification, processing and applications. Heidelberg, Germany: Springer.Search in Google Scholar

Rudnik, E. (2008). Compostable polymer materials (pp. 14–18). Oxford, UK: Elsevier.Search in Google Scholar

Vroman, I., & Tighzert, L. (2009). Biodegradable polymers. Materials, 2, 307–344. 10.3390/ma2020307.Search in Google Scholar

Received: 2015-10-6
Revised: 2016-2-16
Accepted: 2016-3-1
Published Online: 2016-6-25
Published in Print: 2016-10-1

© 2016 Institute of Chemistry, Slovak Academy of Sciences