In the last decade, the sector of wood-based composites has a serious challenge for raw materials due to increasing demand of industrial roundwood in all wood consumption sectors (UNECE/FAO, 2019) and petroleum-based adhesives due to its hazardous emissions. Wood-based panels convention-ally are made of processed wood bonded by formaldehyde-containing resins or by PMDI resins, both are designated as carcinogenic (Sitz et al., 2017). Approximately 7.8 mm3 of air are contaminated by formaldehyde emissions per m2 of particleboard produced making the greatest impact on human toxicity (Dos San-tos et al., 2014). The development of lignocellulosic-based binder-less boards aims to solve these problems looking for suitable agricultural industrial crops to at least partially substitute wood making new composites without hazardous synthetic adhesives (Tajuddin et al., 2016). The study aims a development of medium density binder-less board from steam exploded hemp (Uso31) shives and wheat straw; these crops are not still enough considered for binder-less board production.
Keywords: hemp shives, wheat straw, steam explosion pre-treatment, binder-less board, properties
Authors
Ramunas Tupciauskas
Latvian State Institute of Wood Chemistry, Dzerbenes 27, Riga, LV-1006, Latvia
Janis Rizhikovs
Latvian State Institute of Wood Chemistry, Dzerbenes 27, Riga, LV-1006, Latvia
Martins Andzs
Latvian State Institute of Wood Chemistry, Dzerbenes 27, Riga, LV-1006, Latvia
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