Investigation of the durability of sisal fiber/PLA biocomposite through evaluation of biodegradability by means of microbial growth
Keywords:Sisal fibre, Polylactic acid (PLA), Surface modification, Microbial growth, Biodegradation
The aim of this work was to investigate the microbial biodegradation of 3-(trimethoxysilyl) propyl methacrylate (TPM) modified (silanized) sisal fibres/PLA biocomposites by Aspergillus niger. The modification of the sisal fibres performed excellently, improving hydrophobicity as well as mechanical properties. Compared to the unmodified sisal/PLA biocomposite, it produced superior interfacial adhesion between the fibres and the PLA matrix. In addition, silanization also increased the crystal size and crystallinity in the biocomposite, which decreased thermal decomposition to an observed maximal activation energy of 213 kJ/mol. This indicated the stability of silanized sisal biocomposite in resisting degradation. After the microbial growth test, despite the molecular weight of all biocomposites declining due to biodegradation, the silanized sisal PLA still possessed better properties than the unmodified biocomposite, particularly storage modulus, molecular weight and hydrophobicity, which reflected the inhibition of enzymatic degradation. Furthermore, the evidence of less erosion and fewer fungal hyphae on the surface of the modified biocomposite, was authentic confirmation of the inherent antimicrobial behavior of the silanized sisal /PLA biocomposite.Â
F.P. La Mantia, and M. Morreale. (2011). Green composites: A brief review. Composites Part A: Applied Science and Manufacturing, 42(6): 579-588.
A.K. Mohanty, M. Misra, and L.T. Drzal. (2002). Sustainable bio-composites from renewable resources: opportunities and challenges in the green materials world. Journal of Polymers and the Environment, 10(1): 19-26.
L. Chiari, and A. Zecca. (2011). Constraints of fossil fuels depletion on global warming projections. Energy Policy, 39(9):5026-5034.
A.K. Bledzki, and A. Jaszkiewicz. (2010). Mechanical performance of biocomposites based on PLA and PHBV reinforced with natural fibres-a comparative study to PP. Composites Science and Technology, 70(12): 1687-1696.
J.W. Rhim, H.M. Park, and C.S. Ha. (2013). Bio-nanocomposites for food packaging applications. Progress in Polymer Science, 38(10-11): 1629-1652.
O. Faruk, A.K. Bledzki, H.P. Fink, and M. Sain. (2012). Biocomposites reinforced with natural fibers: 2000–2010. Progress in Polymer Science, 37(11): 1552-1596.
S.Richha,C.Subhash, and S.Amrita. (2012). Isolation of microorganism from soil contaminated with degraded paper in Jharnavillage. Department of Biotechnology and Aillied Science, 4(2): 23-27.
L.R.Lynd,P.J.Weimer,W.H.van Zyl and l.S.Pretorius. (2002). Microbial Cellulose Utilization: Fundamentals and Biology. Microbiology and Molecular Biology Review, 66: 506-577.
T. Nakajima-Kambe, N.G. Edwinoliver, H. Maeda, K. Thirunavukarasu, M.K. Gowthaman, K. Masaki, S. Mahalingam and N.R. Kamini. (2012). Purification, cloning and expressionof anAspergillusniger lipase for degradation of poly (lactic acid) and poly (ε-caprolactone). Polymer Degradation and Stability, 97(2): 139-144.
N.G. Shimpi, M. Borane and S. Mishra. (2014). Preparation, characterization, and biodegradation of PS:PLA and PS:PLA:OMMT nanocomposites using Aspergillus niger. Polymer composites, 35(2): 263-272.
P.C.Ray,H.Yu and P.P Fu. (2009). Toxicity and Environmental Risk of Nanimaterails: Challenges and Future Needs. HHS Public Accsess, 27(1):.1-35.
P. Fernandez-Saiza, J.M. Lagarona, and M.J. Ocio. (2009). Optimization of the biocide properties of chitosan for its application in the design of active films of interest in the food area. Food Hydrocolloids, 23(3): 913-921.
R. Rowell. (2012). Chemical modification of wood to produce chemical and durable composite. Cellulose Chemistry and Technology, 46(7-8): 443-448.
T. Kittikorn, E. Strömberg, M. Ek, M., and S. Karlsson. (2012). Comparison of water uptake as function of surface modification of empty fruit bunch oil palm fibres in PP Biocomposites. BioResources, 8(2): 2998-3016.
E. Kun and K. Marossy. (2013). Effect of crystallinity on PLA’s micrological behavior. Materials Science Forum, 752: 241-247.
T. Kittikorn, E. Strömberg, and S. Karlson. (2012). The effect of surface modifications on the mechanical and thermal properties of empty fruit bunch oil palm fibre PP biocomposites. Polymer from Renewable Resources, 3(3): 79-100.
A. Espert, W. Camacho, and S. Karlson. (2003). Thermal and thermomechanical properties of biocomposites made from modified recycled cellulose and recycled polypropylene. Journal of Applied Polymer Science, 89(9): 2353-2360.
H.P.S. Abdul Khalil, N.L. Suraya, N. Atiqah, M. Jawaid, and A. Hassan. (2012). Mechanical and thermal properties of chemical treated kenaf fibres reinforced polyester composites. Journal of Composite Materials, 47(6): 3343-3350.
S.H. Lee and W.S. Song. (2011). Enzymatic hydrolysis of polylactic fiber. Applied Biochemistry and Biotechnology, 164(1): 89-102.
Q. Wang, L. Su, X. Fan, J. Yuan, L. Chui and P. Wang. (2009). Effects of lipase on poly (lactic acid) fiber. Fiber and Polymer, 10(3): 333-337.
M.S. Sreekala, and S. Thomas, (2003). Effect of fibre surface modification on water-sorption characteristics of oil palm fibres. Composites Science and Technology, 63(6): 861-869.
S. Atarijabarzadeh, E. Strömberg, and S. Karlsson. (2011). Inhibition of biofilm formation on silicone rubber samples using various antimicrobial agents. International Bio-deterioration & Biodegradation, 65(8): 1111-1118.
S. Wallström, E. Strömberg, and S. Karlsson, (2005).Microbiological growth testing of polymeric materials: an evaluation of new methods. Polymer Testing, 24(5): 557-563.
Yanjun Xie,Carsten Mai.(2010).Silane coupling agents used for natural fiber/ polymer composites:A review. Compposites. 41: 806-819.
M.O.Samuelsson and D.L Kirchaman. (1990). Degradation of Adsorbed Protein by Attached Bacteria in Relationship to Surface Hydrophobicity. Applied and Environmental Microbiology, 56: 3643-3648
O. Gil-Castell, J.D. Badia, T. Kittikorn, E. Stromberg, A. Martinez Filipe, M. Ek, S. Karlsson and A. Ribes-Greus. (2014). Hydrothermal ageing of polylactide/ sisal biocomposites. Studies of water absorptionbehaviour andphysico-chemical performance. Polymer Degradation and Stability, 108: 12-222.
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