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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 936Structure and Mechanical Properties of...

Structure and Mechanical Properties of Starch/Styrene-Butadiene Latex Composites

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Abstract:

The structure of the starch/styrene-butadiene latex composites was characterized using Scanning Electron Microscopy (SEM). In order to get a better contrast between starch and latex, OsO₄ were used to stain latex. Ion-beam cutting and liquid nitrogen cracking were employed to fabricate qualified cross-sections for SEM characterization. During drying, starch and latex migrate, creating non-uniform structure with latex dominated in the lower surface (next to the substrate) and starch in the upper surface (open to the air). The film formation of latex is slower than the starch/latex film forming. Phase separation occurs with starch granules embedded in the latex-starch matrix, reinforcing the composites. The analysis of composite structure and use of Perera approach indicate that good adhesion is present between latex phase and starch phase, starch granules and latex-starch matrix. When the latex is substituted by starch, the elastic modulus and tensile strength increase whilst the elongation at break decreases. When the volume fraction of starch is higher than 41.7 %, increasing starch content, the increase of ultimate tensile strength and elastic modulus accelerate, whereas the elongation at break decreases slower, which may arise from the phase co-continuity of starch.

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Materials Science and Engineering Technology

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Periodical:

Advanced Materials Research (Volume 936)

Pages:

74-81

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.936.74

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Online since:

June 2014

Authors:

Gang Chen*, Zheng Jun Zhu, Pekka Salminen, Martti Toivakka

Keywords:

Co-Continuity, Mechanical Property, Migration, Perera Approach, Phase Separation, Starch

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[1] S. Humphreys, Emulsion polymerisation and latex applications, Rapra Technology Limited, Shropshire UK, 2003, pp.3-12.

[2] H.W. Maurer, Starch and Starch Products in Surface Sizing and Paper Coating, Tappi Press, Atlanta GA, 2001, pp.1-5.

[3] M.J. Whalen-Shaw, Binder migration in paper and paperboard coatings, Tappi Press, Atlanta GA, 1993, pp.19-36.

[4] A. Ikeda, T. Enomae, F. Onabe, Interaction between latex and starch in coatings during drying, Japan TAPPI Journal, 55(2) (2001) 82-89.

DOI: 10.2524/jtappij.55.236

[5] H. Hamada, T. Enomae, I. Shibata, A. Isogai, F. Onabe, Effects of water-soluble cellulosic polymers on coating development and quality, Proceedings of Pita Coating Conference, Edinburgh, 2003, pp.4-5.

[6] Y. Du, Y. Zang, J. Du, Effects of starch on latex migration and on paper coating properties, Ind Eng Chem Res, 50(16) (2011) 9781-9786.

DOI: 10.1021/ie200807w

[7] Y. Zang, J. Du, Y. Du, Z. Wu, S. Cheng, Y. Liu, The migration of styrene butadiene latex during the drying of coating suspensions: when and how does migration of colloidal particles occur?, Langmuir, 26(23) (2010) 18331-18339.

DOI: 10.1021/la103675f

[8] P. Rättö, J. Hornatowska, The influence of coating colour composition on the crack area after creasing, Nordic Pulp and Paper Research Journal, 25(4) (2010) 448-494.

DOI: 10.3183/npprj-2010-25-04-p495-501

[9] D.Y. Perera, Effect of pigmentation on organic coating characteristics, Progress in organic coatings, 50(4) (2004) 247-262.

DOI: 10.1016/j.porgcoat.2004.03.002

[10] G. Chinga, T. Helle, Staining with OsO4 as a means to explore paper coating structure, Paperi ja Puu, 85(1) (2003) 1-5.

[11] E. Landreau, L. Tighzert, C. Bliard, F. Berzinet, C. Lacoste, Morphologies and properties of plasticized starch/polyamide compatibilized blends, European Polymer Journal, 45(2009) 2609–2618.

DOI: 10.1016/j.eurpolymj.2009.06.017

[12] F. Dobler, M. Plass, G. Welsch, M. MeKelvy, D. Poncelet, J. Marbaix, Considerations for the selection of binder in double and triple coated systems-effect of under layer starch migration on end use performance, PaperCon. Tappi Press, Atlanta GA, 2010, pp.1-3.

[13] K. Yamazaki, T. Nishioka, Y. Hattori, K. Fujita, Print mottle effect of binder migration and latex film formation during coating consolidation, Tappi J, 76(5) (1993) 79-84.

[14] J. Keddie, A.F. Routh., Fundamentals of latex film formation: processes and properties, Springer-Verlag, New York, 2010 pp.8-10.

DOI: 10.1007/978-90-481-2845-7

[15] S.E. Bruun, Starch, in: Lehtinen E. Pigment Coating and Surface Sizing of Paper, Paperi ja puu, Helsinki, 2000, pp.142-144.

[16] L.M. Robeson. Polymer blends: a comprehensive review, Hanser Gardener Publications Inc., Munich, 2007, pp.26-27.

[17] A. Rashid, M.A. Misman, H.I. Ahmad, Mechanical and biodegradation properties of sago starch natural rubber latex Composites, 7th Asian Australian Conference on Composite Materials, Taibei (2010).

[18] E. Schwach, L. Averous. Starch-based biodegradable blends: morphology and interface properties, Polym Int, 53(12) (2004) 2115–24.

DOI: 10.1002/pi.1636

[19] S.Y. Fu, S.Q. Feng, B. Lauke, Y. Mai, Effects of particle size, particle/matrix interface adhesion and particle loading on mechanical properties of particulate–polymer composites, Composites: Part B, 39 (2009) 933-934.

DOI: 10.1016/j.compositesb.2008.01.002

[20] S. Mali, M. V. E. Grossmann, M. A. Garcia, M. M. Martino, N. E. Zaritzky, Microstructural characterization of yam starch films. Carbohydrate Polymers, 50(4) (2002) 379-386.

DOI: 10.1016/s0144-8617(02)00058-9

[21] J.A. Radley, Industrial Uses of Starch and its Derivatives, Applied Science Pulisher, London, 1976, pp.153-157.

[22] S. Joseph, S. Thomas, Morphology, morphology development and mechanical properties of polystyrene/polybutadiene blends, European Polymer Journal, 39 (2003) 115–125.

DOI: 10.1016/s0014-3057(02)00180-5

[23] E. Lazarus, P. Salminen, P. Alam, M. Toivakka, On the mechanisms of wet and dry Strength of paper coatings: part 1 - experimental studies, Tappi PaperCon, New Orleans LA, (2012).