Flame-retarded biocomposites of poly(lactic acid), distiller’s dried grains with solubles and resorcinol di(phenyl phosphate) |
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| Affiliation: | 1. The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province 214122, China;2. Laboratory of Pharmaceutical Engineering, School of Pharmaceutical Science, Jiangnan University, Wuxi, Jiangsu Province 214122, China;3. Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA;1. Department of Biological Systems Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States;2. Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI 53726, United States;3. Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53726, United States;1. Laboratory of Polymeric & Composite Materials, Materia Nova Research Center – University of Mons UMONS, Place du Parc 23, B-7000 Mons, Belgium;2. Service de Génie des Procédés Chimiques, Faculté Polytechnique – University of Mons UMONS, Place du Parc 23, B-7000 Mons, Belgium;3. Laboratory of Biological and Industrial Chemistry, University of Liège – Gembloux Agro-Bio Tech, Passage des Déportés 2, B-5030 Gembloux, Belgium |
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| Abstract: | The distiller’s dried grains with solubles (DDGS) were treated by smashing and water washing processes. The treatment effects on DDGS were analyzed, and the results showed that the thermal stability and the hydrophobicity of DDGS were improved by the treatment processes. The flame retarded biocomposites of poly(lactic acid) (PLA) with DDGS and degradable polymeric flame retardant resorcinol di(phenyl phosphate) (RDP) were prepared. The prepared biocomposites had good mechanical properties and the tensile strength of the biocomposite containing 15 wt% RDP and 15 wt% DDGS reached approximately 53 MPa. Meanwhile, using the limited oxygen index (LOI) and the underwriters laboratory (UL-94) tests, for the biocomposite, the LOI value was approximately 27.5% and V-0 rating in UL-94 was attained. Furthermore, the peak heat release rate of this biocomposite was reduced to 275 kW/m2 compared with 310 kW/m2 for pure PLA. After burning of the biocomposites, compact and coherent charred layer was formed and the char residues were analyzed in detail. |
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| Keywords: | A Biocomposite B Flame/fire retardancy B Mechanical properties |
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