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Effect of Acids with Different Chain Lengths Modified by Methane Sulfonic Acid and Temperature on the Properties of Thermoplastic Starch/Glycerin Blends

Authors: Chi-Yuan Huang, Mei-Chuan Kuo, Ching-Yi Hsiao


In this study, acids with various chain lengths (C6, C8, C10 and C12) modified by methane sulfonic acid (MSA) and temperature were used to modify tapioca starch (TPS), then the glycerol (GA) were added into modified starch, to prepare new blends. The mechanical properties, thermal properties and physical properties of blends were studied. This investigation was divided into two parts.  First, the biodegradable materials were used such as starch and glycerol with hexanedioic acid (HA), suberic acid (SBA), sebacic acid (SA), decanedicarboxylic acid (DA) manufacturing with different temperatures (90, 110 and 130 °C). And then, the solution was added into modified starch to prepare the blends by using single-screw extruder. The FT-IR patterns indicated that the characteristic peak of C=O in ester was observed at 1730 cm-1. It is proved that different chain length acids (C6, C8, C10 and C12) reacted with glycerol by esterification and these are used to plasticize blends during extrusion. In addition, the blends would improve the hydrolysis and thermal stability. The water contact angle increased from 43.0° to 64.0°.  Second, the HA (110 °C), SBA (110 °C), SA (110 °C), and DA blends (130 °C) were used in study, because they possessed good mechanical properties, water resistances and thermal stability. On the other hand, the various contents (0, 0.005, 0.010, 0.020 g) of MSA were also used to modify the mechanical properties of blends. We observed that the blends were added to MSA, and then the FT-IR patterns indicated that the C=O ester appeared at 1730 cm-1. For this reason, the hydrophobic blends were produced. The water contact angle of the MSA blends increased from 55.0° to 71.0°. Although break elongation of the MSA blends reduced from the original 220% to 128%, the stress increased from 2.5 MPa to 5.1 MPa. Therefore, the optimal composition of blends was the DA blend (130 °C) with adding of MSA (0.005 g).

Keywords: tensile stress, chain length acids, methane sulfonic acid, tapioca starch

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[1] H. Szymanowski et al., “New biodegradable material based on RF plasma modified starch”, SURFACE & COATINGS TECHNOLOGY, vol. 200,1-4, pp539-543, 2005
[2] L. YU, G. J. Christie,” Microstructure and mechanical properties of orientated thermoplastic starches”,J MATER SCI, vol. 40 , pp.111, 2005.
[3] P. P. Kampeerapappun, A. O. Duangdao, P. K. Duanghathai, K. Srikulkit,” Preparation of cassava starch/montmorillonite composite film”. CARBOHYD POLYM, vol.67,2 , pp.155-163, 2007
[4] N. Nishat and A. Malik., “Synthesis, spectral characterization thermal stability, antimicrobial studies and biodegradation of starch–thiourea based biodegradable polymeric ligand and its coordination complexes with (Mn(II), Co(II), Ni(II), Cu(II), and Zn(II)) metals”, J SAUDI CHEM SOC,20, pp.S7–S15, 2016
[5] H. Chi et al., “Effect of acetylation on the properties of corn starch”, FOOD CHEM , vol.106, 3, pp.923-928, 2008.
[6] H. M Park, W. K Lee, C. Y. Park, W. J. Cho, C. S Ha, “Environmentally friendly polymer hybrids Part I Mechanical, thermal, and barrier properties of thermoplastic starch/clay nanocomposites”, J MATER SCI, vol. 38, 5,pp.909-915, 2003.
[7] Y. T. Wen,The study of compounding process and mechanical properties of biodegradable polyester/starch plastics, M. S. Thesis, Department of Bioengineering, TTU,2015.
[8] A. Heydaria, I. Alemzadeha, M. Vossoughia, “Functional properties of biodegradable corn starch nanocomposites for food packaging applications”, MATER DESIGN , vol.50, pp.954-961,2013
[9] C. H. Lu, Develop Anti-Yellowing agent for TPU, Department of Molecular Science and Engineering, NTUT, 2009
[10] Y. Shinozaki, T. Watanabe, T. Nakajima-Kambe, HK. Kitamoto, “Rapid and simple colorimetric assay for detecting the enzymatic degradation of biodegradable plastic films”, J BIOSCI BIOENG, vol.115, 1, pp. 111-114, 2013
[11] .A. Soroudi and I. Jakubowicz, “Recycling of bioplastics, their blends and biocomposites: A review”, EUR POLYM J, vol.49,10, pp. 2839-2858,2013
[12] J. M Fang, “The preparation and characterisation of a series of chemically modified potato starches”, CARBOHYD POLYM, vol.47, 3, pp.245-252, 2002
[13] J. G. Yu, N. Wang, X. F Ma, “The Effects of Citric Acid on the Properties of Thermoplastic Starch Plasticized by Glycerol”, STARCH-STARKE, vol.57, 10, pp. 494-504, 2005
[14] H. Szymanowskia, M. Kaczmareka, M. Gazicki-Lipmana, L. Klimeka, B. Woźniakb, “New biodegradable material based on RF plasma modified starch”, SURFACE & COATINGS TECHNOLOGY, vol. 200(1-4), pp.539-543,2005
[15] C,C,Chang, “Effect of Sebacic Acid Modification and Titanate Coupling Agent Treated Calcium Carbonate on the Properties of Thermoplastic Starch”, M. S. Thesis, Department of Materials Engineering, TTU, 2010
[16] J.M Fanga, P.A Fowlera, C Sayersb, P.A Williamsb, “The chemical modification of a range of starches under aqueous reaction conditions”, CARBOHYD POLYM, vol.55, 3, pp.283-289, 2004.