Showing papers in "Polymer Testing in 2005"

TL;DR: In this article, a method to fabricate isotropic magnetorheological (MR) elastomers under natural conditions was presented, and a simple self-assembled microstructure was proposed to explain the inherent magnetoviscoelasticity of MR elastomer prepared in the absence of a magnetic field.

TL;DR: In this paper, the interfacial properties of extruded and compression moulded natural fiber reinforced thermoplastics (NFRTP) are studied using the single fibre fragmentation test (SFFT).

TL;DR: In this article, the possibility for the use of PHB, poly(3-hydroxybutyrate), in food packaging was investigated by means of dimensional tests (dimensions, volumetric capacity, weight and thickness), and mechanical tests (dynamic compression and impact resistance).

TL;DR: In this paper, different chemical treatments were conducted on the fibers with aqueous solutions of NaOH 2%, or methacrylamide (1-3%) at distinct treatment times.

TL;DR: The effects of the volume fraction and length of natural fibers on flexural properties of biodegradable composites were investigated in this article, where the effect of fiber compression in the cross section was applied to calculate the flexural modulus.

TL;DR: In this paper, the thermal diffusivity of some selected polymers was measured from room temperature up to 160°C using the laser flash technique, and the results obtained were checked against results obtained by the hot wire technique, when possible, they were also compared with data found in the literature.

TL;DR: In this paper, composites were prepared using epoxy resin (ER), carboxyl-terminated butadiene acrylonitrile copolymer (CTBN), and hydroxylterminated polybutadiene (HTPB), in different proportions.

TL;DR: In this article, the effects of the OMMT on the structure and properties of polypropylene (PP) nanocomposites were studied fully, and the intercalated structure of the nanocomposition was characterized by X-ray diffraction and transmission electron microscopy (TEM).

TL;DR: In this article, the authors make polypropylene (PP) and low-density polyethylene (LDPE) blends via injection molding carried out under various injection temperatures and evaluate their tensile and impact properties.

TL;DR: In this article, the degradation of polypropylene (PP) during multiple extrusion at different temperatures was studied by following changes in rheological properties such as complex viscosity and elasticity of the molten polymer.

TL;DR: In this article, an application of ultrasonic techniques to realize on-line monitoring and control of the Resin Transfer Moulding (RTM) process is presented, where the main goal is to localise the flow front during injection and to monitor the curing behavior of the resin.

TL;DR: In this article, the authors investigated the compression behavior of magnetostrictive silicone gels under the influence of an external magnetic field and found that the presence of a magnetic field would increase both the stiffness and the loadbearing capacity, but would reduce the maximum strain of the material.

TL;DR: In this article, a non-contact real-time strain measurement and control system based on the Digital Image Correlation Method (DICM) was successfully established for cyclic/fatigue tests of polymer materials.

TL;DR: This study proposes methods to calculate surface cell count as well as approaches for converting them into volumetric ones and it is found that both cell count methods are hampered by a 20% uncertainty but give similar results.

TL;DR: In this article, the dispersion states of clay layers in Isobutylene-isoprene rubber/organic modified clay nanocomposites were investigated by transmission electron microscopy (TEM) and X-ray diffraction (XRD).

TL;DR: In this article, the effects of matrix and interface modification on the mechanical behavior of short carbon fiber-reinforced diglycidyl ether of bisphenol-A (DGEBA)-based epoxy composite were studied.

TL;DR: In this article, the authors used standard Malaysian rubber (SMRL) grade natural rubber and sodium montmorillonite (Na-MMT) clay that had been modified with cationic surfactants, dodecyl ammonium chloride (DDA) and octadecylamine ammonium (ODA) to obtain a tensile strength of 12.1 and 9.5 MPa, respectively.

TL;DR: In this paper, a magnetorheological elastomer based on polyurethane (PU)/silicone rubber (Si-rubber) hybrid was fabricated without applying a magnetic field.

TL;DR: In this paper, the authors investigated nonlinear creep tests on polycarbonate at room temperature and determined the compliance vs. time curves at nine different stress levels to get a master compliance curve at a given reference stress level according to the concept of time-stress equivalence.

TL;DR: In this paper, the effect of a sulfur vulcanization system on the mechanical properties and heat aging resistance of natural rubber (NR)/tire tread reclaimed rubber (RR) blends was investigated.

TL;DR: In this paper, the authors investigated the advantages of using polypropylene fibres in random poly(propylene-co-ethylene) (PPE) with different fiber concentrations.

TL;DR: Paper sludge filled natural rubber composites were prepared by incorporation of different loadings (10-40phr) of paper sludge fillers as discussed by the authors, which showed that the scorch time and cure time decrease with increasing filler loading whereas the maximum torque, viscous torque and tan delta exhibit an increasing trend.

TL;DR: In this article, the effects of loading rate, mean stress and stress amplitude on the ratcheting behavior of PTFE are discussed, and it is shown that the rate dependence of stress-strain response and ratchets behavior under compression for PTFEs were studied.

TL;DR: In this article, the presence of allylamine amine on the surface of the rubber powder was detected by Fourier Transform Infrared spectral analysis, which was attributed to the chemical interaction between the surfaces of the modified rubber powder and maleic anhydride grafted PP.

TL;DR: In this paper, polyvinyl chloride/compatibilizer/organophilic-montmorillonite (OMMT) nanocomposites have been prepared by melt intercalation by the masterbatch process.

TL;DR: In this article, the non-isothermal crystallization kinetics of silane crosslinked polyethylene (SXPE) and dicumyl peroxide (DCP) modified polyethylenes (DMPE) were studied by differential scanning calorimetry at different cooling rates.

TL;DR: In this paper, the authors used the digital speckle correlation method (DSCM) for the full-field deformation measurement of carbon fiber/epoxy composite pressure vessel.

TL;DR: In this article, the effect of pre-heat treatments on the visco-elastic properties of Ultra-High Molecular Weight Polyethylene (UHMWPE) as a function of frequency and temperature was investigated.

TL;DR: In this paper, the properties of poly(e-caprolactone) (PCL) with cornstarches Amidex 3001, 4001, and Penetrose 80 (A 3 ) were studied.

TL;DR: In this paper, the authors investigated the variations in the tensile behavior of polychloroprene rubber (CR) caused by thermo-oxidative aging and found that both elastic constants C1 and C2 of the Mooney-Rivlin equation increase due to crosslink formation and a decrease in the flexibility of the structure network.