Looking for new, sustainable ways to utilize plastics is still a very pertinent topic considering the amount of produced in world. One newest and intriguing possibility use insects biodegradation plastics, which can be named entomoremediation. The aim this work was demonstrate ability insect Tenebrio molitor biodegrade different, real plastic waste. types waste used were: remains thermal building insulation polystyrene foam (PS), two polyurethane (kitchen sponge as PU1 commercial PU2),...

In this work, fibre Bragg gratings (FBGs) were inscribed in two different undoped poly- (methyl methacrylate) (PMMA) polymer optical fibres (POFs) using types of UV lasers and their inscription times, temperature strain sensitivities are investigated. The POF (POFBGs) lasers: a continuous HeCd @325 nm laser pulsed KrF @248 laser. Two PMMA POFs used which the primary secondary preforms (during two-step drawing process) have thermal treatment. drawn or preform is not specifically pre-treated...

This study compares the degradation process of unsaturated polyester resin (UPR) and vinyl ester (VER) their biocomposites with kraft lignin. In order to degradation, accelerated aging, immersion in different solvents, microwave radiation high temperature were applied. The results show that, depending on conditions, assumes a course. VER is more chemically resistant than UPR resin. case composites immersed an aggressive solvent (acetone), it can be observed that polymer matrix degraded,...

The paper investigates the synthesis of eco-friendly composites and their properties before after immersion in solvents different chemical natures. For preparation, unsaturated polyester resin (UPR) based on recycled poly (ethylene terephthalate) (PET) peanut shell powder (PSP) were used. Polymerization was carried out presence environmentally friendly polymeric cobalt. Distilled water, acetone, 10% hydrochloric acid, 40% sodium hydroxide, toluene, 2% carbonate used as resistance test....

The creation of heat-resistant polymers represents one the most significant challenges and priorities in contemporary scientific research. incorporation a filler analogous nature content into disparate types resins will facilitate identification relationship between properties structure macromolecular chains synthetic that function as composite matrices. objective this study was to ascertain impact lignin at 5 15% by weight on thermal degradation two resin-based composites with structural...

This paper presents the synthesis, physicochemical properties and modifications of 2-hydroxyethyl methacrylate copolymers.It describes new hydrogels in form microbeads different degrees crosslinking (2, 5, 8, 10, 15 20% mol).As monomers bis[4(2-hydroxy-3-methacryloyloxypropoxy) phenyl]-sulfide ethylene glycol dimethacrylate were used.The obtained by two alternative methods a suspension copolymerisation procedure.The copolymers modified with diethylenetriamine an epoxide opening...

Abstract A novel method for synthesizing microspheres from lignin or acrylate derivatives through copolymerization with styrene (St) and divinylbenzene (DVB) has been developed. The copolymers were obtained by the emulsion-suspension polymerization a constant molar ratio of DVB to St 1:1 (w/w) different amounts its derivatives. morphologies materials examined scanning electron microscopy. Two types modifications performed introduce vinyl groups into molecules: modification acrylic acid...

The paper investigates the properties of unsaturated polyester resins and microcrystalline cellulose (MCC) composites. influence MCC modification on mechanical, thermomechanical, thermal obtained materials was discussed. In order to reduce hydrophilic character surface, it subjected esterification with methacrylic anhydride. This resulted in hydroxyl groups blocking and, additionally, introduction bonds into its structure, which could participate copolymerization curing resin. Composites...

The aim of this work was to prepare a new group aromatic methacrylate monomers, utilise them in preparation porous microspheres and study the influence their chemical structure on textural properties microspheres. Polymeric were prepared by suspension-emulsion polymerisation four monomers: methacryloiloxybenzene, 1,2-dimethacryloiloxybenzene, 1,3-dimethacryloiloxybenzene 1,4-dimethacryloiloxybenzene with another crosslinking agent—trimethylolpropane trimethacrylate. Mass median diameters...

Synthesis and properties of the multilayered stationary phases, which contain quaternary amine functional groups for analysis anions by ion chromatography, are described. The bonded phases were characterized elemental analysis, solid-state (13)C NMR spectroscopy chromatographic methods. surface 1,4-di(2-hydroxy-3-methacryloyloxypropoxy)phenol (solid support) was coated with polymeric layers formed condensation polymerization primary diepoxide. Each layer anion exchange phase consists...

New glycidyl methacrylate copolymers containing different numbers of epoxy groups were synthesized and used to develop effective procedures for inulinase immobilization. The beneficial characteristics the carriers included a high degree crosslinking, stability at ambient temperature, an appropriate surface, presence reactive groups. Some factors affecting efficiency immobilization crude inulinase, including kind amount carrier, number groups, as well buffer pH concentration examined. yield...

The paper investigates the synthesis of green composites and their properties before after laboratory accelerated aging tests. Materials were made unsaturated polyester resins (UPRs) based on recycled poly(ethylene terephthalate) (PET) wood flour (WF). effect dibenzylideneacetone (dba) addition mechanical thermomechanical was also determined. Green obtained using environment friendly polymeric cobalt as an accelerator. Before exposition to xenon lamp radiation, UPRs physically modified by WF...

The CONTIN method for inverting noisy linear operators was used to calculate the adsorption distribution function from both simulated and experimental isotherms. Simulated isotherms allowed us estimate resolving power of influence errors on function, while enabled validate model its parameters. It shown that calculation within condensation approximation region gives perfect recovering original if sufficient information is inherent in input data, is, case a large data set over wide range...

Abstract The modification of a commercially available unsaturated polyester resin with 4,4′‐bismaleimidodiphenylmethane is presented. properties the modified resins were compared those nonmodified resin, and characterized in noncured state after curing. results indicate that addition bismaleimide to not only improves its but also accelerates curing reactions. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 2003–2007,

The study describes the thermal properties of functional microspheres composed glycidyl methacrylate (GMA) and crosslinking agent ethylene glycol dimethacrylate (EGDMA). Copolymeric poly(GMA-co-EGDMA) were prepared via suspension–emulsion polymerization in presence toluene decan-1-ol as porogens. In order to introduce groups, porous network was modified by epoxy ring opening with use sodium cyclopentadienide then Diels–Alder addition maleic anhydride. materials evaluated thermogravimetry...

This paper presents the properties of wood-resin composites. For improving their antibacterial character, silver nanoparticles were incorporated into structures. The obtained materials analyzed in vitro for anti-biofilm potency contact with aerobic Gram-positive Staphylococcus aureus and epidermidis; Gram-negative Escherichia coli Pseudomonas aeruginosa. These pathogens are responsible various infections, including those associated healthcare. effect incorporation on mechanical...