0000001890 00000 n
American National Standards Institute ANSI. The propertiescvandcpare referred to asspecific heats(orheat capacities) because under certain special conditions they relate the temperature change of a system to the amount of energy added by heat transfer. 0000008491 00000 n
(2015). B, J. Mattsson, J. 0000004961 00000 n
] analysed the feasibility of using waste from the manufacture of MDF panels as reinforcement in orthophthalic polyester resin, for the development of materials for industrial application. Variations of nonlinear moduli due to introduction of nanofillers can be of the order of several tens of %. Chemical Communications, 47(3), 899-901. http://dx.doi.org/10.1039/C0CC03198D. 25 Botan, R., Nogueira, T. R., Lona, L. M. F., & Wypych, F. (2011). (2020). Polmeros: Cincia e Tecnologia, 22(1), 61-68. http://dx.doi.org/10.1590/S0104-14282012005000013.http://dx.doi.org/10.1590/S0104-14282012 The 3338 cm-1 band, attributed to the O-H stretch, corresponds to the adsorbed moisture for the cellulose and urea-formaldehyde resin (one of the constituents of MDF)[1515 Artiaga, K. C. M. (2014). Journal of Applied Polymer Science, 112(6), 3686-3694. http://dx.doi.org/10.1002/app.29683.http://dx.doi.org/10.1002/app.29683 Exposure to Formaldehyde and Its Potential Human Health Hazards. Figure 2 shows the TGA for MDF, where the first mass loss was shown to occur between 50 and 116 C, which can be attributed to the loss of moisture present in the residue, a typical hygroscopic characteristic of materials consisting of cellulose[2222 Ferreira, S. D., Altafini, C. R., Perondi, D., & Godinho, M. (2015). [2727 Spinac, M. A. S., Fermoseli, K. K. G., & De Paoli, M. A. Composites Science and Technology, 62(10), 1357-1372. http://dx.doi.org/10.1016/S0266-3538(02)00080-5. H. Nukaga, S. Fujinami, H. Watabe, K. Nakajima, and T. Nishi, Jpn. According to the ASTM G154-06, 1000 h of accelerated aging is equivalent to 1 year of natural exposure to UV. (2015). Nanofibers from recycle waste expanded polystyrene using natural solvent. Hillig, ., Iwakiri, S., Haselein, C., Bianchi, O., & Hillig, D. (2011). 0000003254 00000 n
(2003). Global forest products facts and figures. Materials data book. Retrieved from http://www-mdp.eng.cam.ac.uk/web/library/enginfo/cueddatabooks/materials.pdf. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Our Website follows all legal requirements to protect your privacy. Rome: FAO Forestry Department. 19 Yuan, C., Zhang, J., Chen, G., & Yang, J. In R. M. Rowell, Handbook of wood chemistry and wood composites (pp.
(2001). The effect of fibreboard (MDF) disintegration technique on wood polymer composites (WPC) produced with recovered wood particles. Enemet, 16, 1672-1681. http://dx.doi.org/10.5151/1516-392X-27874. The extrapolated temperature of the beginning of mass loss (Tonset) for the MDF residue was 284 C. (EN). PMid:21663944. Fechine, J. M., Santos, A. (2009). 0000001115 00000 n
Caracterizao das O-acetil-(4-O-metilglicurono)xilanas isoladas da madeira de Eucalyptus urograndis. Recycled polypropylene reinforced with curaua fibers by extrusion. 12 Minor, J. L. (1994). In the literature there are bit studies about recycle or apply MDF waste. Retrieved from http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-53832008000100011. 22 Ferreira, S. D., Altafini, C. R., Perondi, D., & Godinho, M. (2015). Botan, R., Nogueira, T. R., Lona, L. M. F., & Wypych, F. (2011). Materials & Design, 28(8), 2303-2309. http://dx.doi.org/10.1016/j.matdes.2006.07.013. Figure 6 shows the morphology of the PS, PS-M4 and PS-M8 samples, exposed to accelerated aging in a UV chamber after 90 days, compared to the samples before exposure. A facile gemini surfactant-improved dispersion of carbon nanotubes in polystyrene. 0000004397 00000 n
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This increase in Youngs modulus was also observed in the study by Borsoi et al. Gomes et al. 0000009484 00000 n
(2003). ,1818 Chen, G., Liu, S., Chen, S., & Qi, Z. ], phenols present in lignin may eventually act as scavengers of free radicals, delaying the thermal degradation of the polymer. Lett. Their SI units areJ/kg KorJ/mol K. The information contained in this website is for general information purposes only. PMid:30553303. These products could be used as engineering material, or as a new product that can be sold in the furniture industry itself, resulting in environmental and financial benefits. ] after service life. The evaluation of polyolefin photodegradation with natural and artificial exposure. Florida: CRC Press.,66 Irle, M., & Barbu, M. C. (2010). 9 Hillig, ., Iwakiri, S., Haselein, C., Bianchi, O., & Hillig, D. (2011). 21 Bermdez, A. Y. L., & Salazar, R. (2008). PMid:18032014.http://dx.doi.org/10.1016/j.wasman.2007. ]. Cambridge: Cambridge University. (2011). The second event of mass lost in composites using MDF occurs between 250 and 380 C and can be associated with the release of volatile matter, which consists of toxic and carcinogenic chemical compounds added to wood and its derivatives, such as formaldehyde, which is harmful to human health and the environment[2424 Kim, K.H., Jahan, S., & Lee, J. 2021 The Authors. The results pointed out a decrease in mechanical properties for composites as a function of addition of residue. Part C, Environmental Carcinogenesis & Ecotoxicology Reviews, 29(4), 277-299. http://dx.doi.org/10.1080/10590501.2011.629972. Heating zone were programmed to 160, 175 and 200 C respectively, operating at velocity of 45 rpm. MDF residue was dried in an oven at 120 C until constant mass. (2014). 0000007213 00000 n
http://dx.doi.org/10.1007/s00289-005-042 http://dx.doi.org/10.1016/j.compositesb. http://dx.doi.org/10.1016/j.scitotenv.20 http://dx.doi.org/10.1016/j.envdev.2016. http://www.fao.org/3/I7034EN/i7034en.pdf http://dx.doi.org/10.1080/17480272.2018. http://dx.doi.org/10.5902/198050983237 http://dx.doi.org/10.1590/0104-1428.1915 http://dx.doi.org/10.5151/1516-392X-2787 http://www.fpl.fs.fed.us/documnts/pdf199 http://dx.doi.org/10.1023/A:100929212015 http://dx.doi.org/10.1016/j.compositesa. http://dx.doi.org/10.1590/S0100-40422008 http://dx.doi.org/10.1016/j.wasman.2007. http://dx.doi.org/10.1002/1521-3935(2001 http://dx.doi.org/10.1016/j.polymer.2009 http://www.scielo.org.co/scielo.php?scri http://dx.doi.org/10.1016/j.enconman.201 http://dx.doi.org/10.1016/j.carbpol.2018 http://dx.doi.org/10.1080/10590501.2011. http://dx.doi.org/10.1590/S0104-14282011 http://dx.doi.org/10.1590/0104-1428.1581 http://www-mdp.eng.cam.ac.uk/web/library http://dx.doi.org/10.1016/j.matdes.2006. http://dx.doi.org/10.1080/1023666X.2013. http://dx.doi.org/10.1016/j.polymdegrads http://dx.doi.org/10.1016/S0266-3538(02) http://dx.doi.org/10.18642/jmseat_710012 http://dx.doi.org/10.1590/S0104-14282012 http://dx.doi.org/10.1590/S0100-40422006 http://dx.doi.org/10.1590/S1516-14392013 http://dx.doi.org/10.1007/s00289-005-0421-2, http://dx.doi.org/10.1016/j.compositesb.2019.107544, http://dx.doi.org/10.1016/j.scitotenv.2011.04.038, http://dx.doi.org/10.1016/j.envdev.2016.05.002, http://www.fao.org/3/I7034EN/i7034en.pdf, http://dx.doi.org/10.1080/17480272.2018.1427144, http://dx.doi.org/10.1590/0104-1428.1915, http://dx.doi.org/10.5151/1516-392X-27874, http://www.fpl.fs.fed.us/documnts/pdf1994/minor94a.pdf, http://dx.doi.org/10.1023/A:1009292120151, http://dx.doi.org/10.1016/j.compositesa.2019.01.006, http://dx.doi.org/10.1590/S0100-40422008000500027, http://dx.doi.org/10.1016/j.wasman.2007.10.001, http://dx.doi.org/10.1002/1521-3935(20010401)202:7<1189::AID-MACP1189>3.0.CO;2-M, http://dx.doi.org/10.1016/j.polymer.2009.10.007, http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-53832008000100011, http://dx.doi.org/10.1016/j.enconman.2014.12.032, http://dx.doi.org/10.1016/j.carbpol.2018.10.115, http://dx.doi.org/10.1080/10590501.2011.629972, http://dx.doi.org/10.1590/S0104-14282011005000017, http://dx.doi.org/10.1590/0104-1428.1581, http://www-mdp.eng.cam.ac.uk/web/library/enginfo/cueddatabooks/materials.pdf, http://dx.doi.org/10.1590/S0104-14282011005000055, http://dx.doi.org/10.1016/j.compositesa.2004.12.002, http://dx.doi.org/10.1016/j.matdes.2006.07.013, http://dx.doi.org/10.1080/1023666X.2013.784936, http://dx.doi.org/10.1016/j.polymdegradstab.2010.10.003, http://dx.doi.org/10.1016/S0266-3538(02)00080-5, http://dx.doi.org/10.18642/jmseat_7100121507, http://dx.doi.org/10.1590/S0104-14282012005000013, http://dx.doi.org/10.1590/S0100-40422006000400009, http://dx.doi.org/10.1590/S1516-14392013005000167. Pyrolysis of Medium Density Fiberboard (MDF) wastes in a screw reactor. Polymer, 50(24), 5787-5793. http://dx.doi.org/10.1016/j.polymer.2009.10.007.http://dx.doi.org/10.1016/j.polymer.2009 Recycled polypropylene reinforced with curaua fibers by extrusion. After photo-irradiation, greater roughness and cracks were observed in all samples. PMid:21079820.http://dx.doi.org/10.1039/C0CC03198D 0000002256 00000 n
Mechanical and thermal properties of polystyrene and medium density fiberboard composites. Antich, P., Vzquez, A., Mondragon, I., & Bernal, C. (2006). It was observed a change in Young's modulus for all samples subjected to accelerated aging, under 90 days exposure. Influence of accelerated weathering on the properties of polypropylene/polylactic acid/eucalyptus wood composites. Biosorbents for the removal of synthetic organics and emerging pollutants: opportunities and challenges for developing countries. The substantial variations of the nonlinear elastic moduli for composites with different types of fillers are demonstrated and analyzed. (2001). Irle, M., & Barbu, M. C. (2010). 0000002050 00000 n
Temperature of degradation onset for pure polystyrene and for the composites did not show significant changes with the aging time. Bands at 1607 and 1490 cm-1 are attributed to the C-C stretch of the aromatic ring, 1450 cm-1 is attributed to the CH2 stretch of the aromatic ring. The samples were fabricated by the same technology and our data provide information on relative changes of nonlinear properties of the composites caused by addition of the fillers. Retrieved from http://www.fao.org/3/I7034EN/i7034en.pdf http://www.fao.org/3/I7034EN/i7034en.pdf ]. In addition, it was found that at 231 C only 5% of the mass is lost and 10% of loss of mass occurs at 268 C. A facile gemini surfactant-improved dispersion of carbon nanotubes in polystyrene. It is important to note that the developed composites have properties that make their commercial use feasible, as required by the normative document ANSI A 208.1[3131 American National Standards Institute ANSI. ,3838 Fernandes, L. L., Freitas, C. A., Demarquette, N. R., & Fechine, G. J. M. (2012). In our study, we found that the residual mass resulting from the PS burning process is practically zero, and all samples containing MDF presented a single mass loss event, as well as the polystyrene matrix. In this sense, studies have been carried out to improve its performance of polymers, with materials being added as reinforcement[77 Food and Agriculture Organization of the United Nations FAO. (2018). Environmental and health hazard ranking and assessment of plastic polymers based on chemical composition. (2009). They observed that Youngs modulus is obtained in a very small deformation range (elastic region) and, within this range, both split and crosslink reactions, even if only at a small degree of intensity, are reflected in this property[3838 Fernandes, L. L., Freitas, C. A., Demarquette, N. R., & Fechine, G. J. M. (2012).