Abstract
Blends of poly(β-hydroxybutyrate) (PHB) and low density polyethylene (LDPE) were prepared in proportions of 100/0, 75/25, 50/50, 27/75 and 0/100 (PHB/LDPE wt.%), with and without oxidized polyethylene wax (OPW, 5 wt.%), and the mechanical, thermal (differential scanning calorimetry and melting flow index, morphological (scanning electron microscopy) and biodegradation (aging in simulated soil) properties were evaluated. The addition of OPW increased the tensile strength and Young’s modulus but decreased the elongation at break of the blends. Similarly, OPW increased the T g of the pure LDPE and enhanced the melt flow index. Scanning electron microscopy showed that OPW reduced the phase separation of LDPE and increased the biodegradation during aging in simulated soil.
Similar content being viewed by others
References
Moore CJ (ed) (2002) Out in the Pacific plastic is getting drastic: the world’s largest “landfill” is in the middle of the ocean. Algalita Marine Research Foundation, Long Beach
Gomez JGC, Netto CLB (2001) In: Biotecnologia Industrial: processos fermentativos e enzimáticos, vol 3. Edgard Blücher Ltda, São Paulo, p 219
Sudesh K, Abe H, Doi Y (2000) Progr Polym Sci 25:1503
Reddy B, Ghai CSK, Rashmi R, Kalia VC (2003) Bioresour Technol 87:137
Ol’khov AA, Iordanskii AL, Zaikov GE, Shibryaeva LS (2000) Polym Plast Techn Eng 39:783
ASTM Designation 6400-04 (2004) Standard specifications for compostable plastics. Am Soc Test Mat
Chiellini E, Solaro R (1996) Adv Mat 8:305
Kounty GM, Lemaire J, Delort A-M (2006) Chemosph 64:1243
Kawai F, Watanabe M, Shibata M, Yokoyama S, Sudate Y (2002) Polym Degrad Stab 76:129
Weiland M, David C (1994) Polym Degrad Stab 45:371
Chiellini E, Corti A, Swift G (2003) Polym Degrad Stab 81:341
ASTM Designation D 638-99 (1999) Standard method for tensile properties of plastics. Am Soc Test Mat
ASTM D 1238 Rev C (2004) Standard test method for melt flow rates of thermoplastics by extrusion plastometer
Quental AC, Felisberti MI (2006) J Appl Polym Sci 100:1255
Pedroso AG, Rosa DS (2005) Carboh Polym 59:1
El-Hadi A, Schnabel R, Straube E, Müller G, Riemschneider M (2002) Macrom Mat Eng 287:363
Canevarollo SVJ (2004) Ciência dos polímeros: um texto básico para tecnólogos e engenheiros. Artliber, São Paulo
Rosa DS, Volponi JE, Guedes CGF (2006) J Appl Polym Sci 102:825
Kim MN, Lee AR, Yoon JS, Chin AJ (2000) Eur Polym J 36:1677
Rosa DS, Calil MR, Guedes CGF, Santos CEO (2002) J Polym Environ 9:109
Acknowledgements
The authors thank Braskem S.A., PHB Industrial S.A. and Megh Indústria e Comércio Ltda. for supplying the materials. This work was supported by CNPq (grant no. 304577/2004-9), FAPESP (grant no. 02/13202-6), CAPES and the Universidade São Francisco. The SEM work was done with the JSM-5900LV microscope in the Laboratório de Microscopia Eletrônica at the Laboratório Nacional de Luz Síncrotron (LME/LNLS), Campinas, SP, Brazil.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Rosa, D.d.S., Gaboardi, F., Guedes, C.d.G.F. et al. Influence of oxidized polyethylene wax (OPW) on the mechanical, thermal, morphological and biodegradation properties of PHB/LDPE blends. J Mater Sci 42, 8093–8100 (2007). https://doi.org/10.1007/s10853-007-1701-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10853-007-1701-z