Physical Properties and Drying Behavior of Hydrothermally Treated Yellow-Poplar

Abstract

Non-chemical treatments (steam and ultrasonic vibrations) have been intensively researched and commercialized to make chemical-free wood products with enhanced mechanical properties and decay resistance; however, utilization of high-pressure steam medium involves vapor-phase reactions using high-temperature steam generated at the expense of high energy input. In this research, drying behavior, mechanical properties, and physical characteristics of wood (yellowpoplar) were compared to evaluate influence of reaction media (steam and hot-compressed water) and temperatures (100°C and 140°C). The control (no treatment) was used for reference comparison. For experiments, green samples of yellow-poplar heartwood were used for treatment. v

Microwave-Assisted Synthesis of Pd Nanoparticles into Wood Block (Pd@wood) as Efficient Catalyst for 4-Nitrophenol and Cr(VI) Reduction

“…This is because, in general, the ester bonds between lignin, hemicellulose and cellulose may be broken after alkali treatment of biomass [31]. Hydrothermal treatment significantly changed the total porosity of yellow poplar (Liriodendron tulipifera Linnaeus) samples [32] and the porosity of biomass was increased after NaOH thermal pretreatment of wood blocks [33]. These intricate channels and pores in wood cell wall might provide perfect attachment points for Pd nanoparticles.…”