This study investigates the fire resistance capabilities of newly developed loose-fill thermal insulation materials crafted from annual plants such as wheat straw, corn stalk, and water reed. Three processing methodologies were employed: mechanical crushing (raw, size ≤ 20 mm), chemi-mechanical pulping (CMP) using 4% sodium hydroxide, steam explosion (SE). An admixture boric acid (8%) tetraborate (7%) was added to all treated enhance retardancy. The reaction characteristics assessed a cone...

Lignocellulosic biomass (LCB)-based thermal insulation materials available in the market are more expensive than conventional ones and consist mainly of wood or agricultural bast fibers which primarily used construction textile industries. Therefore, it is crucial to develop LCB-based from cheap raw materials. The study investigates new locally residues annual plants like wheat straw, reeds corn stalks. treatment was performed by mechanical crushing defibration steam explosion process....

Toxic formaldehyde emissions, and the necessity to reduce consumption of petrochemicals, stimulates development environmentally friendly adhesives. The aim this research was study, for first time, possibility using condensed tannins (CTs)-rich extracts from grey alder (

The present study evaluates mold fungal resistance of newly developed loose-fill thermal insulation materials from wheat straw, corn stalk and water reed. Three different processing methods raw was performed by mechanical crushing (Raw, ≤ 20 mm), thermal-mechanical pulping (TMP) using 4% NaOH steam explosion (SEP). An admixture boric acid (8%) tetraborate (7%) applied to all processed substrates due their anti-fungal properties. Additionally, the fourth sample group prepared SEPs species...

A study demonstrating the approach of zero‐waste technologies, a component Zero Emissions concept, and using lignin extracted from steam‐exploded wood as adhesive in hot‐pressed fibre boards plywood to substitute phenol‐formaldehyde resins is reported. Properties sample containing different amount are compared between themselves with EU standards for boards. strong correlation density form stability under humid conditions content found. Results testing mechanical properties suggest that...

Abstract The preparation of self-binding lignocellulosic fibreboards has been investigated. Different high-density (HDF) were hot-pressed based on a mixture grey alder ( Alnus incana L. Moench) wood chips processed by steam explosion auto-hydrolysis (SE) and 15% or 25% lignin content from three different industrial sources: softwood kraft (SWKL), soda wheat straw (SoWhStL) hydrolysis (HWhStL). Density, thickness swelling (TS) after immersion in water for 24 h, modulus rupture (MOR),...

In the current decade, based on European Green Deal, new challenges of wood-based panel industry have arisen, seeking for formaldehyde-free bio-based adhesives and broadening raw lignocellulosics. order to contribute potential solution challenges, binder-less boards steam-exploded (SE 220 °C/2 min) hemp shives wheat straw were investigated. The objective this study was find out optimal hot-pressing conditions in terms temperature (150-200 °C) time (5-16 with three density levels...

The present study evaluates the mold fungal resistance of newly developed loose-fill thermal insulation materials made wheat straw, corn stalk and water reed. Three distinct techniques for processing raw were used: mechanical crushing (Raw, ≤20 mm), thermo-mechanical pulping (TMP) with 4% NaOH steam explosion (SEP). An admixture boric acid (8%) tetraborate (7%) was applied to all processed substrates due their anti-fungal properties. fourth sample group prepared from SEP without added...

The objective of the study was to investigate preliminary technological parameters for obtaining furfural and binder-less panels depending on hydrothermal pre-treatment temperature, steam explosion treatment pressing conditions. If pre- temperatures were 160–180 °C time 90 min, yield 64.8–67.2% from that which theoretically possible. dynamics significantly increases in first 10 minutes, when at 180 is almost twice as high 160 °C. obtained maximal MOE value (3250 N mm-2) good enough surface...

In the last two decades intensive grow of industry building materials from renewable resources is observed. Such situation related to some aspects: global warming, environmental pollution, impact on human health, at their end-of-life. current study development thermal insulation hemp and polylactide fibres are analysed. While main parameter for conductivity, rational density composite 40 kg/m3 was chosen. For experiments 11 compositions were prepared. One composition prepared just with...

The main objective of the study was to obtain bio-composites from grey alder sawdust using a mixture birch outer bark suberinic acids as binder, and test their mechanical properties. Ethanol-extracted used raw material for investigation. Characteristics (suberinic content, epoxy content acid number) hydrolytically depolymerized binder were also determined. initial filler/binder ratio molding parameters (temperature pressure) established by full factorial design. Preliminary data showed that...

A study of self-binding fibreboards pressed without synthetic adhesives is reported. The board samples steam-exploded grey alder (Alnus incana L. Moench) particles hot-pressed under a variety conditions including moisture content the mat (8% and 12%), temperature (150°C, 160°C, 170°C 180°C) pressure (0.2–8 MPa) are tested for resistance (standard EN 1087-1), decay ENV 12038) reaction to fire performance (ISO 5660-1). found satisfy standard 622-5 load-bearing medium-density fibreboard use in...

Some industrial crops residuals like wheat straw, buckwheat husks and reeds were used in the study as raw lignocellulosic materials to evaluate their potential thermal insulation material. Steam explosion (SE) pre-treatment was disrupt convert material smooth shape foamy fibrous shape. Two level Factorial design impact of fraction size (10-20-30 mm), moisture content (10-30-50%), SE temperature (200-215-230 °C) duration (00-30-60 s) on bulk density conductivity obtained loose-fill materials....

Silver birch ( Betula pendula ) outer bark suberin can be used as a raw material to make an adhesive for particleboards (PBs). It is promising formaldehyde-free alternative traditional synthetic resins. However, the acidic, which catalyse furfural (FUR) formation from xylans in wood particles that are preparation of PBs. FUR being volatile organic compound emitted PBs and exposure it have harmful effects on humans. In scope this study, technological parameters (wet pH: 3, 6 9), glycerol...

Abstract The study of converting grey alder ( Alnus incana ) chips and silver birch Betula pendula flakes – residues from plywood manufacture into blow-in insulation material by steam explosion (SE) is reported. SE was conducted at temperatures between 200 235°C, for 0–5 min pressures 16 32 MPa. severity parameters (log R 0 the calculated, which log ≈3.6 most appropriate production materials. Thermal conductivity obtained insulating found to be in range 0.053–0.057 W m −1 ·K .

Wood-based panels (WBP) comprise a considerable part in the output of European wood industry, GDP, and export. Over 30% fibreboards about 50% other boards used constructions carpentry are produced Europe. Industrially WBP contain synthetic adhesives determining mechanical properties being made from oil often toxic present health risks. Synthetic may up to 15 % total mass 60 production costs. Production costs important under circumstances rising prices. Moreover, bonding agents rather is...

An attempt to reduce, replace, or even eliminate the synthetic resins from wood-based panels alongside broadening array of raw lignocellulosics is still essential and attractive. Many pretreatments have been studied, among which steam explosion (SE) resulted in superior physical-mechanical properties obtained binder-less boards. However, SE pretreatment leads a relatively strong odor, emitted boards independent lignocellulosic, raising concern about use Emissions volatile organic compounds...

Steam explosion (SE) is a well renowned pre-treatment method used for bio-refined material synthesis due to its simplicity in machinery and efficiency resource energy use creation of high-value products. Used separation lignocellulose originated from wood other sources, current research wood-based has mainly focused fractions commonly grown tree species. Scientific studies are needed better understanding common species generate new possible products, e.g., bio-based composite materials....