Showing papers in "Polymer Testing in 2015"

TL;DR: In this article, a multifunctional epoxy chain extender, Joncryl ADR 4368, was used as compatibilizer to change the morphology and mechanical properties of blown films.

TL;DR: In this paper, a large panel of Natural Rubber (NR) samples was characterized using Fourier Transform Infrared (FT-IR) spectroscopy in Attenuated Total Reflection (ATR) configuration.

TL;DR: In this paper, the morphology and thermal stability of melt-mixed poly(lactic acid) (PLA)/poly(e-caprolactone) (PCL) blend nanocomposites with small amounts of TiO2 nanoparticles were investigated.

TL;DR: In this article, the large-strain behavior of magneto-rheological elastomers (MREs) is characterised experimentally under uniaxial compression, uníaxial tension and pure shear deformation, in the absence and in the presence of magnetic fields.

TL;DR: In this article, the adhesion and proliferation of both C2C12 myoblast and MC3T3-E1 pre-osteoblast cells on the polyvinylidene fluoride (PVDF) and its main copolymers were investigated.

TL;DR: In this article, the authors focus on satisfactorily toughening and reinforcing poly(lactic acid)/thermoplastic polyurethane (PLA/TPU) blend using appropriate amounts of hydrophobic silica nanoparticles (SiO2) via simple melt mixing.

TL;DR: In this paper, the authors found that the thermal conductivity of composite materials was synergistically enhanced by the simultaneous incorporation of pitch-based carbon fibers (PCFs) and graphene nanoplatelets (GNPs) into the matrix.

TL;DR: In this paper, a few-layer graphene oxide (GO) was modified with tetraethylenepentamine (GO-TEPA) in a reaction assisted by microwave radiation, and the effect of fillers on the morphology of cryofractured regions of epoxy matrix was observed through electron microscopy images.

TL;DR: In this article, three diamine FGOs were used to strengthen the interfacial bonding between the carbon fibers and the epoxy adhesive to improve the tensile and flexural properties of the composite.

TL;DR: In this paper, the thermal behavior, dynamic mechanical properties and rheological properties of PBS/nano-CaCO3 composites with various nano-CaCo3 weight fractions were investigated.

TL;DR: In this paper, a carbodiimide-based additive, intended to stabilize PLA based materials to avoid hydrolytic degradation during processing, was incorporated into a series of PLA and nanofiller containing PLA films.

TL;DR: In this article, the mechanical and physical properties of virgin linear low density (LLDPE) and LLDPE blends with plastic solid waste (PSW) were investigated using accelerated weathering tests in a UV chamber.

TL;DR: In this article, different EVA foils containing variable additive formulations were exposed to artificial UV-irradiation at 50°C and showed that delayed EVA degradation could be observed depending on stabilizers added.

TL;DR: In this paper, a typical carbon black reinforced hydrogenated nitrile butadiene rubber (HNBR) was exposed to a mix of hydrocarbons (toluene, heptane and cyclohexane) at elevated temperatures and pressure in order to chemically age the material.

TL;DR: In this article, the effects of water and glycerol, which were selected as plasticizers for the wheat gluten, as well as the processing conditions (mixing time and molding temperature) on the physical and mechanical properties of the films were evaluated.

TL;DR: In this paper, the effect of tetramethylenedicarboxylic dibenzoylhydrazide (TMC) on the nonisothermal and isothermal crystallization behavior of PLA was investigated by differential scanning calorimetry (DSC), polarized optical microscopy (POM) and wide angle X-ray diffraction (WAXD).

TL;DR: Wang et al. as mentioned in this paper used mathematical morphology (MM) for defect detection in carbon fiber reinforced polymer (CFRP) composites, where the non-uniform backgrounds in each image were conveniently constructed by MM.

TL;DR: In this paper, a mixture of polylactic acid (PLA) and thermoplastic polyurethane (TPU) was prepared by melt blending and the degradation profile of the blends can be correlated to their morphology.

TL;DR: In this article, the authors show that the charge structure of [C2mim] [NTf2] induces complete piezoelectric β-phase crystallization of the PVDF within the composite and decreases its crystallinity fraction significantly.

TL;DR: In this paper, the authors evaluated a condition monitoring technique for aged polyethylene electrical insulation in nuclear power plants using dielectric spectroscopy and tensile testing, and the results suggest that the results can be used for in-situ measurements of the degree of oxidation of polyethyleni cables, in order to obtain information about the condition of the cable insulation to enable the remaining lifetime to be predicted.

TL;DR: In this paper, the effects of experimental variables on nano-indentation measurements on PMMA were investigated, and a wide range of conditions, including different load levels, loading rates, holding times, and unloading rates were employed to examine the sensitivity of nano-information measurements to the selected experimental variables.

TL;DR: In this article, a novel one-sided TNDT technique is presented which relies on creating an artificial inflection point by multiplying front-surface temperature evolution by n th power of time, where 0 is the number of particles in the composite.

TL;DR: In this article, a method to measure both the free stroke and blocked torque in a one-end-tethered polyamide fiber was proposed. And the analysis allowed the prediction of torsional stroke under any external loading condition based on the fundamental characteristics of the actuator.

TL;DR: In this article, the preparation and electro-stimulus response properties of polyurethane (PU) dielectric elastomer films with such 1D and 2D nanocarbon fillers embedded in the polymer matrix were investigated.

TL;DR: In this paper, the effects of chain extension and melt blending temperature on the stereocomplex formation of 50/50 (w/w) poly(L-lactide) (PLLA)/poly(D-lactic) (PDLA) blends or poly(SCL) polylactides (scPLAs) were investigated.

TL;DR: In this article, degradation and chain extension in poly(butylene-adipate-terephthalate), PBAT, compounded in a laboratory internal mixer with an epoxydic chain extender additive was estimated from temperature-torque-time data recorded by the equipment.

TL;DR: In this article, the authors describe the examination of the weathering degradation of low density polyethylene (LDPE) over several months in a sub-Saharan region of Algeria.

TL;DR: In this paper, the mechanism of interaction and modifications in thermoplastic composites based on low density polyethylene (LDPE), ground tire rubber (GTR) and non-polar elastomer was analyzed.

TL;DR: In this paper, the effects of drawing temperature (Td) and draw strain on the orientation and structure of semicrystalline poly(lactic acid) (PLA) films were investigated by wide angle X-ray diffraction and polarized Fourier transform infrared spectroscopy.

TL;DR: Carboxymethylchitosan (CMC) hydrogels containing poly(N-isopropylacrylamide) (poly(NIPAAm)) and pH-responsive poly(acrylic acid)(poly(AA)) were prepared via a free radical polymerization in the presence of hexamethylene-1,6-di-(aminocarboxysulfonate) crosslinking agents as discussed by the authors.