- Advanced Cellulose Research Studies
- Lignin and Wood Chemistry
- Natural Fiber Reinforced Composites
- Material Properties and Processing
- Nanocomposite Films for Food Packaging
- Plant and Biological Electrophysiology Studies
- Light effects on plants
- biodegradable polymer synthesis and properties
- Electrospun Nanofibers in Biomedical Applications
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Fungal Biology and Applications
- Slime Mold and Myxomycetes Research
- Enzyme-mediated dye degradation
- Plant Parasitism and Resistance
- Polymer Nanocomposites and Properties
- Composting and Vermicomposting Techniques
- Bone Tissue Engineering Materials
- Advanced Sensor and Energy Harvesting Materials
- Mycorrhizal Fungi and Plant Interactions
- Dental materials and restorations
- Planarian Biology and Electrostimulation
- Biofuel production and bioconversion
- Biocrusts and Microbial Ecology
- Material Properties and Applications
- Orthopaedic implants and arthroplasty
Latvian State Institute of Wood Chemistry
2018-2024
Riga Technical University
2020-2024
Riga Stradiņš University
2020
Biodegradable polymer composites from renewable resources are the next-generation of wood-like materials and crucial for development various industries to meet sustainability goals. Functional applications like packaging, medicine, automotive, construction sustainable housing just some that would greatly benefit. Some existing industries, wood plastic composites, already encompass given examples but dominated by fossil-based polymers unsustainable. Thus, there is a background bring new...
The aim of the study was to characterize and compare films made cellulose nanocrystals (CNC), nano-fibrils (CNF), bacterial nanocellulose (BNC) in combination with chitosan alginate terms applicability for potential food packaging applications. In total, 25 different formulations were evaluated, seven biopolymer best mechanical performance (tensile strength, strain)—alginate, 5% CNC, chitosan, 3% BNC without glycerol, CNF glycerol—were selected investigated regarding morphology (SEM),...
Ammonium persulfate has been known as an agent for obtaining nanocellulose in recent years, however most research focused on producing cellulose nanocrystals. A lack of about combined ammonium oxidation and common mechanical treatment order to obtain nanofibrils identified. The objective this was investigate carboxylated produced by with ultrasonic treatment. Light microscopy, atomic force microscopy (AFM), powder X-Ray diffraction (PXRD), Fourier-transform infrared spectroscopy (FTIR),...
We report the manufacturing and characterization of poly (butylene succinate) (PBS) micro cellulose (MCC) woody-like composites. These composites can be applied as a sustainable composite alternative to conventional fossil polymer-based wood-plastic (WPC). The PBS/MCC were prepared by using melt blending 70 wt% MCC processed from bleached softwood. was modified enhance dispersion compatibility way carbodiimide (CDI), polyhydroxy amides (PHA), alkyl ester (EST), (3-Aminopropyl)...
In this study unique blended biopolymer mycocel from naturally derived biomass was developed. Softwood Kraft (KF) or hemp (HF) cellulose fibers were mixed with fungal (FF) in different ratios and the obtained materials characterized regarding microstructure, air permeability, mechanical properties, virus filtration efficiency. The screened Basidiomycota fungi Ganoderma applanatum (Ga), Fomes fomentarius (Ff), Agaricus bisporus (Ab), Trametes versicolor (Tv) applicable for blending fibers....
In this study, novel blends of mycelium biocomposites (MB) were developed. Various combinations birch sawdust and hemp shives with bark (BB) wheat bran (WB) additives inoculated basidiomycete Trametes versicolor to produce self-growing biomaterials. MB characterized according mycelial biomass increment in final samples, changes chemical composition, elemental (C, H, N) analyses, granulometry substrates, water-related mechanical properties, as well mold resistance biodegradability. The...
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....
The demand for eco-friendly packaging materials has urged researchers to look alternatives petroleum-based polymers. In this regard, paper-based products have turned out be a promising choice; however, their weak resistance water limited application. use of various additives enhance paper’s moisture is common practice. However, considering the growing global agenda sustainable development, search new bio-based paper become increasingly important. This study investigated potential synergistic...
This study aimed to test the utility of ammonium persulfate (APS) oxidised nanofibrillated cellulose (NFC) as an additive for chitosan- and alginate-based biopolymer films that could eventually be used paper coatings food packaging applications. Sodium alginate chitosan were base films. Various concentrations APS NFC ranging from 0% 10% a reinforcing agent, resulting in six combinations either alginate-NFC or chitosan-NFC composite Biofilms tested their mechanical properties (tensile...
Novel biobased materials from fungal hyphae and cellulose fibers have been proposed to address the increasing demand for natural in personal protective equipment (PPE). Materials containing commercially available kraft (KF), laboratory-made highly fibrillated hemp (HF) (FF) obtained fruiting bodies of lignicolous basidiomycetes growing nature were prepared using paper production techniques evaluated their mechanical air permeability properties. SEM microscopy revealed network structure...
This study investigates the mycelial biomass production and chitosan extraction potential of various Basidiomycota strains, including Heterobasidion annosum, Phanerochaete chrysosporium, Pleurotus ostreatus, Trametes versicolor, Lentinus lepideus. Both submerged fermentation (SF) solid-state (SSF) methods were employed. The yield in basidiocarps Agaricus bisporus, Ganoderma applanatum was also evaluated as a reference material. extracted from fungal cells characterized using elemental...
A significant increase in the consumption of recycled fiber products has been observed worldwide, and industry is forced to solve challenges quality add strength agents and/or virgin fibers reach sufficient properties. In order investigate whether mechanical air permeability properties waste (WF) material can be significantly improved by adding wood kraft (KF), hemp soda (HF), ammonium persulfate oxidated cellulose nanofibrils (CNF), different blends were prepared tested. Results revealed...
In this study, different combinations of mycelium biocomposites (MBs) were developed using primary substrates sourced from the local agricultural, wood processing, and paper industries. The physicomechanical properties, thermal conductivity, fire behavior evaluated. highest bending strength was achieved in composites containing waste fibers birch sanding dust, with a competitive that synthetic polymers like EPS XPS, as well some commercial building materials. lowest conductivity observed...
Recycling of paper materials or other type cellulose fibres is important regarding saving nature resources and environmental protection. Cellulose dissolution regenerating from various one recycling possibilities. by NaOH/urea system has a great potential due to the use harmless reagents, at same time challenging forming gel-like substances, when degree polymerization more than 1000. It was found that microcrystalline cotton were dissolved in NaOH/urea, but tissue paper, filter waste not...
In various production processes, for example, in the of disposable absorbent underwear, a large amount fine fibre cellulose results as by-product.Our objective was to obtain from it nanocellulose gels using them papermaking reinforcing paper.Fine nanoparticle were obtained by thermocatalytic destruction method developed at Laboratory Cellulose Latvian State Institute Wood Chemistry, followed their dispersion, concentration 8%, water medium ball mill.A part used filler paper sheets produced...
Plastic waste is an ever-growing concern, causing harm to many ecological and human health aspects, one of the major contributors this problem being packaging. Mycelium composites (MC) are ecologically safe materials, well suited for short-life usage as packaging materials. In our study we made MC using fine coarse granulometry hemp shives applying them in 3 substrate variants – with added bran, bran birch bark, sole substrate. We assessed material's water absorption mechanical properties,...
For sustainable use of lignocellulosic resources, pruned tree branches cocoa, one the major evergreen tropical crops with significant economic importance worldwide, were investigated as a potential source kraft pulp. This study determined chemical composition, fiber dimensions, pulp, and paper properties cocoa (Theobroma cacao L.) compared to deciduous trees traditionally used in industry. A handsheet pulp showed promising results narrow length distribution, high density, mechanical...
As the world shifts towards more sustainable and eco-friendly practices, industrial hemp (Cannabis sativa L.) is gaining recognition as a versatile crop with numerous applications. The Baltic Sea region well-suited for cultivation, its temperate climate varied soil types. This study evaluates suitability of various varieties region, focusing on their ability to produce high-quality biomass, fibers, seeds, dual-purpose products. findings will contribute development thriving industry in...
Nano- and microparticles were produced from hemp shives cellulose obtained thereof, using the thermocatalytic mechanical destruction method. The partially destructed material, at concentrations of 8-9%, was dispersed in water medium a ball mill or ground without presence (~15 h). In first case, gel-like dispersion, which contained nanoparticles microparticles, obtained. second microparticle powder (from shives) materials used as fillers coatings paper sheets. air resistance properties sheets...
The isolation and potential applications of chitosan from the fungal source is an alternative to crustacean synthetic polymers. strains Basidiomycota (Heterobasidion annosum, Phanerochaete chrysosporium, Pleurotus ostreatus, Trametes versicolor, Lentinus lepideus) with different environmental distribution, ecological importance, industrial application were studied for mycelial biomass production in submerged (SF) solid state fermentation (SSF). Further, cells was extracted characterized by...