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Mechanical properties of wood flour/poly (lactic acid) composites coupled with waterborne silane-polyacrylate copolymer emulsion

  • Ru Liu , Shupin Luo , Jinzhen Cao EMAIL logo and Yu Chen
Published/Copyright: September 5, 2015
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Abstract

Wood flour/polylactic acid (WF/PLA) composites were produced with a WF content of 50% based on three types of waterborne polyacrylate (PA) emulsions including a PA homopolymer emulsion and two types of silane-PA copolymer emulsions as coupling agents. Two silanes were in focus, namely, γ-methacryloxypropyl- trimethoxysilane (silane-1) and vinyltrimethoxysilane (silane-2). The emulsions and the modified WFs were characterized, and the effects were investigated in terms of emulsion type and their loading levels on the mechanical properties of WF/PLA composites. (1) Both types of silanes could be successfully copolymerized with PA to form stable emulsions. (2) With increasing PA loading, the mechanical properties (except for flexural modulus) of the composites increased at first before reaching the maximum values at 4% PA loading and then the properties worsened. However, these values were larger than those of pure composites, especially in cases when PA-silane emulsions were applied. (3) PA modified with silane-1 showed the best coupling effect among all the three PA emulsions. The results can be interpreted that PA emulsions are effective coupling agents for the preparation of high-performance WPCs.


Corresponding author: Jinzhen Cao, MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Qinghua East Road 35, Haidian 100083, Beijing, China, Phone/Fax: +86-10-62337381, e-mail:

Acknowledgments

This study was financially supported by the National Natural Science Foundation of China (No. 31170524).

References

Ayrilmis, N., Dundar, T., Kaymakci, A., Ozdemir, F., Kwon, J.H. (2014) Mechanical and thermal properties of wood-plastic composites reinforced with hexagonal boron nitride. Polym. Compos. 35:194–200.10.1002/pc.22650Search in Google Scholar

Chen, J., Yan, N. (2013) Crystallization behavior of organo-nanoclay treated and untreated kraft fiber-HDPE composites. Compos. Part B-Eng. 54:180–187.10.1016/j.compositesb.2013.05.011Search in Google Scholar

Choi, J.H., Kwak, S.Y., Kim, S.Y., Kim, J.J. (1998) Effect of molecular structure of polyarylates on the compatibility in polyarylate/poly(vinyl chloride) blends. J. Appl. Polym. Sci. 70:2173–2180.10.1002/(SICI)1097-4628(19981212)70:11<2173::AID-APP11>3.0.CO;2-ISearch in Google Scholar

Dányádi, L., Renner, K., Móczó, J., Pukánszky, B. (2007) Wood flour filled polypropylene composites: interfacial adhesion and micromechanical deformations. Polym. Eng. Sci. 47:1246–1255.10.1002/pen.20768Search in Google Scholar

Freire, C.S.R., Fernandes, S.C.M., Silvestre, A.J.D., Pascoal N.C. (2013) Novel cellulose-based composites based on nanofibrillated plant and bacterial cellulose: recent advances at the University of Aveiro – a review. Holzforschung 67: 603–612.10.1515/hf-2012-0127Search in Google Scholar

Graupner, N. (2008) Application of lignin as natural adhesion promoter in cotton fibre-reinforced poly(lactic acid) (PLA) composites. J. Mater Sci. 43:5222–5229.10.1007/s10853-008-2762-3Search in Google Scholar

Han, Q., Pei, Y., Zhong, Y., Zhang, K., Tang, L., Wu, L. (2015) Fabrication and properties of chemically bonded polysilsesquioxane-polyacrylate/silica hybrid latex films with high silicon content. Polym. Compos. 36:389–396.10.1002/pc.22954Search in Google Scholar

Hoque, M.E., Aminudin, M.A.M., Jawaid, M., Islam, M.S., Saba, N., Paridah, M.T. (2014) Physical, mechanical, and biodegradable properties of meranti wood polymer composites. Mater. Des. 64:743–749.10.1016/j.matdes.2014.08.024Search in Google Scholar

Ikeda, K., Takatani, M., Sakamoto, K., Okamoto, T. (2008) Development of fully bio-based composite: wood/cellulose diacetate/poly(lactic acid) composite. Holzforschung 62:154–156.10.1515/HF.2008.026Search in Google Scholar

Islam, M.S., Hamdan, S., Hasan, M., Ahmeda, A.S., Rahman, M.R. (2012a) Effect of coupling reactions on the mechanical and biological properties of tropical wood polymer composites (WPC). Int. Biodeter. Biodegr. 72:108–113.10.1016/j.ibiod.2012.05.019Search in Google Scholar

Islam, M.S., Hamdan, S., Jusoh, I., Rahman, M.R., Ahmed, A.S. (2012b) The effect of alkali pretreatment on mechanical and morphological properties of tropical wood polymer composites. Mater. Des. 33:419–424.10.1016/j.matdes.2011.04.044Search in Google Scholar

Kaczmarek, H., Nowicki, M., Vuković-Kwiatkowska, I., Nowakowska, S. (2013) Crosslinked blends of poly(lactic acid) and polyacrylates: AFM, DSC and XRD studies. J. Polym. Res. 20:91.10.1007/s10965-013-0091-ySearch in Google Scholar

Kuang, X., Kuang, R., Zheng, X., Wang, Z. (2010) Mechanical properties and size stability of wheat straw and recycled LDPE composites coupled by waterborne coupling agents. Carbohyd. Polym. 80:927–933.10.1016/j.carbpol.2010.01.008Search in Google Scholar

Lee, C.H., Wu, T.L., Chen, Y.L., Wu, J.H. (2010) Characteristics and discrimination of five types of wood-plastic composites by FTIR spectroscopy combined with principal component analysis. Holzforschung 64:699–704.10.1515/hf.2010.104Search in Google Scholar

Lee, C.H., Hung, K.C., Chen, Y.L., Wu, T.L., Chien, Y.C., Wu, J.H. (2012) Effects of polymeric matrix on accelerated UV weathering properties of wood-plastic composites. Holzforschung 66:981–987.10.1515/hf-2011-0198Search in Google Scholar

LeVan, S.L., Winandy, J.E. (1990) Effects of fire-retardant treatments on wood strength: a review. Wood Fiber Sci. 22:113–131.Search in Google Scholar

Li, Q., Matuana, L.M. (2003) Effectiveness of maleated and acrylic acid-functionalized polyolefin coupling agents for HDPE-wood-flour composites. J. Thermoplast. Compos. 16:551–564.10.1177/089270503033340Search in Google Scholar

Liao, W., Teng, H., Ou, J., Masuda, T. (2011) Fabrication of chemically bonded polyacrylate/silica hybrid films with high silicon contents by the sol-gel method. Prog. Org. Coat. 71:376–383.10.1016/j.porgcoat.2011.04.008Search in Google Scholar

Liu, R., Cao, J., Ouyang, L. (2013a) Degradation of wood flour/poly (lactic acid) composites reinforced by coupling agents and organo-montmorillonite in a compost test. Wood Fiber Sci. 45:108–118.Search in Google Scholar

Liu, R., Luo, S., Cao, J., Peng, Y. (2013b) Characterization of organo-montmorillonite (OMMT) modified wood flour and properties of its composites with poly(lactic acid). Compos. Part A-Appl. Sci. 51:33–42.10.1016/j.compositesa.2013.03.019Search in Google Scholar

Liu, R., Peng, Y., Cao, J., Chen, Y. (2014) Comparison on properties of lignocellulosic flour/polymer composites by using wood, cellulose, and lignin flours as fillers. Compos. Sci. Technol. 103:1–7.10.1016/j.compscitech.2014.08.005Search in Google Scholar

Ndlovu, S.S., van Reenen, A.J., Luyt, A.S. (2013) LDPE-wood composites utilizing degraded LDPE as compatibilizer. Compos Part A-Appl. Sci. 51:80–88.10.1016/j.compositesa.2013.04.005Search in Google Scholar

Pelaez-Samaniego, M.R., Yadama, V., Lowell, E., Amidon, T.E., Chaffee, T.L. (2013) Hot water extracted wood fiber for production of wood plastic composites (WPCs). Holzforschung 67:193–200.10.1515/hf-2012-0071Search in Google Scholar

Peng, Y., Liu, R., Cao, J., Guo, X. (2014) Effects of vitamin E combined with antioxidants on wood flour/polypropylene composites during accelerated weathering. Holzforschung 69:113–120.10.1515/hf-2014-0044Search in Google Scholar

Song, X., Chen, Y., Xu, Y., Wang, C. (2014) Study on tough blends of polylactide and acrylic impact modifier. Bioresources 9:1939–1952.10.15376/biores.9.2.1939-1952Search in Google Scholar

Takatani, M., Ikeda, K., Sakamoto, K., Okamoto, T. (2008) Cellulose esters as compatibilizers in wood/poly(lactic acid) composite. J. Wood Sci. 54:54–61.10.1007/s10086-007-0911-ySearch in Google Scholar

Tran, L.Q.N., Fuentes, C.A., Dupont-Gillain, C., Van Vuure, A.W., Verpoest, I. (2013) Understanding the interfacial compatibility and adhesion of natural coir fibre thermoplastic composites. Compos. Sci. Technol. 80:23–30.10.1016/j.compscitech.2013.03.004Search in Google Scholar

Wang, Y., Li, Y., Zhang, R., Huang, L., He, W. (2006) Synthesis and characterization of nanosilica/polyacrylate composite latex. Polym. Compos. 27:282–288.10.1002/pc.20200Search in Google Scholar

Wang, Y., Qi, R., Xiong, C., Huang, M. (2011) Effects of coupling agent and interfacial modifiers on mechanical properties of poly(lactic acid) and wood flour biocomposites. Iranian Polym. J. 20:281–294.Search in Google Scholar

Wang, Y., Cao, J., Zhu, L., Zhao, G. (2012) Interfacial compatibility of wood flour/polypropylene composites by stress relaxation method. J. Appl. Polym Sci. 126:89–95.10.1002/app.36682Search in Google Scholar

Wu, T.-L., Chien, Y.-C., Chen, T.-Y., Wu, J.-H. (2013) The influence of hot-press temperature and cooling rate on thermal and physicomechanical properties of bamboo particle-polylactic acid composites. Holzforschung 67:325–331.10.1515/hf-2012-0087Search in Google Scholar

Xie, Y., Xiao, Z., Grüneberg, T., Militz, H., Hill, C.A.S., Steuernagel, L., Mai, C. (2010a) Effects of chemical modification of wood particles with glutaraldehyde and 1,3-dimethylol-4, 5-dihydroxyethyleneurea on properties of the resulting polypropylene composites. Compos. Sci. Technol. 70:2003–2011.10.1016/j.compscitech.2010.07.024Search in Google Scholar

Xie, Y., Hill, C.A.S., Xiao, Z., Militz, H., Mai, C. (2010b) Silane coupling agents used for natural fiber/polymer composites: a review. Compos. Part A-Appl. Sci. 41:806–819.10.1016/j.compositesa.2010.03.005Search in Google Scholar

Xie, Y., Krause, A., Militz, H., Steuernagel, L., Mai, C. (2013) Effects of hydrophobation treatments of wood particles with an amino alkylsiloxane co-oligomer on properties of the ensuing polypropylene composites. Compos. Part A-Appl. Sci. 44:32–39.10.1016/j.compositesa.2012.08.011Search in Google Scholar

Zhang, H. (2014) Effect of a novel coupling agent, alkyl ketene dimer, on the mechanical properties of wood-plastic composites. Mater. Des. 59:130–134.10.1016/j.matdes.2014.02.048Search in Google Scholar

Received: 2015-3-9
Accepted: 2015-8-10
Published Online: 2015-9-5
Published in Print: 2016-5-1

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