Special Issues
Table of Content

The 10th Conference on Green Chemistry and Nanotechnologies in Polymeric Materials (GCNPM 2019)

Submission Deadline: 15 January 2020 (closed) View: 17

Guest Editors

Dr. Ugis Cabulis, Latvian State Institute of Wood Chemistry, Latvia.

Summary

Conference combines two popular areas of current research: the green approach utilizing renewable resources and mild reaction conditions together with innovative nanotechnologies enabling to design novel polymer materials with advanced properties. Potential topics may include, but are not limited to:
● Renewable raw materials, natural polymers and fibers
● Bio-based monomers and polymers
● Bio-based blends
● Biodegradation, LCA and environmental issues
● Sustainable bioplastics for packaging
● Eco-friendly synthesis of polymers (supercritical CO2, microwaves, sonication, enzymatic catalysis)
● Nanostructured polymers
● Bio-and nanocomposites
● Synthesis and surface modification of nanofillers
● Polymer nanofibers
● Sustainable nanomaterials
● Porous polymeric bio(nano)materials
● Processing and applications of bio(nano)materials
● Recycling and waste management of polymeric bio(nano)materials
● Future of bio(nano)polymers, composites and hybrids



Published Papers


  • Open Access

    ARTICLE

    Novel Mycelium-Based Biocomposites (MBB) as Building Materials

    Zinta Zimele, Ilze Irbe, Juris Grinins, Oskars Bikovens, Anrijs Verovkins, Diana Bajare
    Journal of Renewable Materials, Vol.8, No.9, pp. 1067-1076, 2020, DOI:10.32604/jrm.2020.09646
    (This article belongs to the Special Issue: The 10th Conference on Green Chemistry and Nanotechnologies in Polymeric Materials (GCNPM 2019))
    Abstract Novel mycelium-based biocomposites (MBB) were obtained from local agricultural (hemp shives) and forestry (wood chips) by-products which were bounded together with natural growth of fungal mycelium. As a result, hemp mycocomposites (HMC) and wood mycocomposites (WMC) were manufactured. Mechanical, water absorption and biodegradation properties of MBB were investigated. MBB were characterized also by ash content and elemental composition. The results of MBB were compared with the reference materials such as the commercial MBB material manufactured by Ecovative® Design (EV), hemp magnesium oxychloride concrete (HC) and cemented wood wool panel (CW), manufactured by CEWOOD®. The mechanical properties… More >

  • Open Access

    ARTICLE

    Synthesis of Photoactive Compounds from Tall Oil Fatty Acids

    Beatrise Sture, Mikelis Kirpluks, Sergejs Gaidukovs, Edgars Vanags
    Journal of Renewable Materials, Vol.8, No.9, pp. 1077-1089, 2020, DOI:10.32604/jrm.2020.09294
    (This article belongs to the Special Issue: The 10th Conference on Green Chemistry and Nanotechnologies in Polymeric Materials (GCNPM 2019))
    Abstract Photocurable systems are more effective, faster and require less energy than conventional thermal curing methods. To facilitate the ongoing transition toward a biobased economy, photoactive compounds were synthesized from tall oil fatty acids (TOFA) which is a by-product from wood pulping. In this study, photoactive monomers were synthesized by two different chemical pathways using oleic acid and TOFA as raw materials. Firstly, double bonds present in TOFA were epoxidized, followed by epoxy ring-opening with acrylic acid which introduced photoactive functional groups into the fatty acid backbone. Intermediates and final products were analysed using titration methods More >

  • Open Access

    ARTICLE

    Dielectric Permittivity of Rigid Rapeseed Oil Polyol Polyurethane Biofoams and Petrochemical Foams at Low Frequencies

    Ilze Beverte, Vairis Shtrauss, Aldis Kalpinsh, Uldis Lomanovskis, Ugis Cabulis, Irina Sevastyanova, Sergejs Gaidukovs
    Journal of Renewable Materials, Vol.8, No.9, pp. 1151-1170, 2020, DOI:10.32604/jrm.2020.010215
    (This article belongs to the Special Issue: The 10th Conference on Green Chemistry and Nanotechnologies in Polymeric Materials (GCNPM 2019))
    Abstract Early investigations of dielectric permittivity of rigid polyurethane foams at low frequencies were made on petrochemical-origin foams, mainly by means of parallel plate capacitors. In the present investigation biopolyol was synthesized from Latvia-grown rapeseeds’ oil by the transesterification method with triethanolamine, in an environmentally friendly process, without emission of harmful substances, at temperatures 175°C ± 5°C. Rigid, closed-cell rapeseed oil polyol polyurethane biofoams and petrochemical foams were made ensuring content of the renewable rapeseed oil polyol in ready foams 27 wt.%–29 wt.%. Dielectric permittivity of the polyurethane foams and the underlying monolithic petrochemical-origin polyurethane and… More >

  • Open Access

    ARTICLE

    3D-Printed PLA Filaments Reinforced with Nanofibrillated Cellulose

    Matea Perić, Robert Putz, Christian Paulik
    Journal of Renewable Materials, Vol.8, No.7, pp. 759-772, 2020, DOI:10.32604/jrm.2020.09284
    (This article belongs to the Special Issue: The 10th Conference on Green Chemistry and Nanotechnologies in Polymeric Materials (GCNPM 2019))
    Abstract In the current study poly(lactic acid) PLA composites with a 3 wt% and 5 wt% of nanofibrillated cellulose (NFC) were produced by 3D-printing method. An enzymatic pretreatment coupled with mechanical fibrillation in a twin screw extruder was used to produce high consistency NFC. Scanning electron microscopy (SEM) equipped with Fibermetric software, FASEP fiber length distribution analysis, Furrier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), tensile tests, impact tests and differential scanning calorimetry were used to characterize NFC and PLA/NFC composites. The results of the fiber length and width measurements together with the results of the… More >

  • Open Access

    ARTICLE

    Differential Catalysis of Depolymerisation and Dehydration Reactions: Producing Furfural from Plant Biomass

    Nikolajs Vedernikovs
    Journal of Renewable Materials, Vol.8, No.6, pp. 661-674, 2020, DOI:10.32604/jrm.2020.09274
    (This article belongs to the Special Issue: The 10th Conference on Green Chemistry and Nanotechnologies in Polymeric Materials (GCNPM 2019))
    Abstract The main principles of the technological realisation of the furfural obtaining process have been formulated by Ricard [1]. Based on his recommendations, all investigators proceeded from the assumption that the depolymerisation of pentosans and the dehydration of pentoses in the one-step production of furfural from raw plant material must be accelerated with diluted catalyst solutions. According to this theory, uniform impregnation of the raw material with a catalyst solution is considered necessary. The reduction in the amount of the catalyst solution down to 30–40% of the mass of the dry raw material, suggested by Miner… More >

  • Open Access

    ARTICLE

    Application of the Principles of “Green Chemistry” for the Synthesis of 10-Undecylenic Aliphatic Esters with Antimicrobial Activity

    Dragomir Vassilev, Nadezhda Petkova, Yulian Tumbarski, Milena Koleva, Panteley Denev
    Journal of Renewable Materials, Vol.8, No.6, pp. 675-686, 2020, DOI:10.32604/jrm.2020.09279
    (This article belongs to the Special Issue: The 10th Conference on Green Chemistry and Nanotechnologies in Polymeric Materials (GCNPM 2019))
    Abstract Undenicylic acid (10:1) is known as an antifungal agent and an active ingredient of many topical medicines [1–6]. The present research investigates the preparation of aliphatic esters of 10-undecylic acid with butanol and i-amyl alcohol by the conventional and ultrasound-assisted syntheses as well as the structural elucidation of the resulting compounds, by FTIR and NMR spectroscopy. The antimicrobial properties of the obtained 10-undecylenic esters were tested against Gram-positive bacteria (Staphylococcus aureus; Enterococcus faecalis; Listeria monocytogenes), Gram-negative bacteria (Escherichia coli; Salmonella sp.) and filamentous fungi (Penicillium sp.; Aspergillus niger; Fusarium moniliforme) using the conventional agar-well diffusion assay. The results demonstrated that all More >

  • Open Access

    ARTICLE

    The Influence of Poly(Vinyl Alcohol) on Oil Release Behavior of Polylactide-Based Composites Filled with Linseed Cake

    Olga Mysiukiewicz, Mateusz Barczewski, Joanna Szulc
    Journal of Renewable Materials, Vol.8, No.4, pp. 347-363, 2020, DOI:10.32604/jrm.2020.09276
    (This article belongs to the Special Issue: The 10th Conference on Green Chemistry and Nanotechnologies in Polymeric Materials (GCNPM 2019))
    Abstract In order to limit the negative impact of industry on natural environment, ecological alternatives to conventional polymers are being proposed. One of the most popular “green” polymers is polylactide, which can also be successfully applied as a matrix of composites. The application of ground linseed cake as a filler for polylactide-based composites is in line with the idea of Circular Economy, and moreover it provides a modifying effect on the polymer by increasing its crystallinity and reducing its brittleness. This effect is caused by the presence of linseed oil which can be released to the… More >

  • Open Access

    ARTICLE

    Physicochemical Characterization and Antimicrobial Properties of Inulin Acetate Obtained by Microwave-Assisted Synthesis

    Nadezhda Petkova, Radka Arabadzhieva, Dragomir Vassilev, Gergana Gencheva, Yulian Tumbarski, Tsveteslava Ignatova-Ivanova, Sevginar Ibryamova, Mina Todorova, Milena Koleva, Panteley Denev
    Journal of Renewable Materials, Vol.8, No.4, pp. 365-381, 2020, DOI:10.32604/jrm.2020.09292
    (This article belongs to the Special Issue: The 10th Conference on Green Chemistry and Nanotechnologies in Polymeric Materials (GCNPM 2019))
    Abstract Microwave-assisted irradiation was performed for esterification of chicory inulin with high degree of polymerization with acetic anhydride without a solvent only with a catalyst. The resulting esters were characterized by melting point, hydrophilic-lipophilic balance, thin-layer chromatography, ultraviolet spectroscopy, Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectroscopy. Inulin acetate demonstrated a high degree of acetylation (2.5–3.0) and presented a white, water-insoluble substance with bitter taste. The FTIR and NMR spectra confirmed esterification and demonstrated the incorporation of hydrophobic residue to the water soluble inulin backbone. Swelling capacity, water holding, oil-holding capacities, the foamability,… More >

  • Open Access

    ARTICLE

    Composite Biomaterials Based on Poly(L-Lactic Acid) and Functionalized Cellulose Nanocrystals

    Mariia Stepanova, Ilia Averianov, Olga Solomakha, Natalia Zabolotnykh, Iosif Gofman, Mikhail Serdobintsev, Tatiana Vinogradova, Viktor Korzhikov-Vlakh, Evgenia Korzhikova-Vlakh
    Journal of Renewable Materials, Vol.8, No.4, pp. 383-395, 2020, DOI:10.32604/jrm.2020.09206
    (This article belongs to the Special Issue: The 10th Conference on Green Chemistry and Nanotechnologies in Polymeric Materials (GCNPM 2019))
    Abstract The biocomposite films were prepared from poly(L-lactic acid) and cellulose nanocrystals. To improve interfacial compatibility of hydrophilic cellulose nanocrystals with hydrophobic matrix polymer as well as to provide the osteoconductive properties, cellulose was functionalized with poly(glutamic acid). The modified cellulose nanocrystals were better distributed and less aggregated within the matrix, which was testified by scanning electron, optical and polarized light microscopy. According to mechanical tests, composites filled with nanocrystals modified with PGlu demonstrated higher values of Young’s modulus, elongation at break and tensile strength. Incubation of composite materials in model buffer solutions for 30 weeks More >

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