Dedicated to Prof. Yoshihisa Inoue, who discovered entropy driven chirogenesis and is a seeker for the origin of homochirality on the Earth.

The effect of polyaniline (PAni) on the tensile properties, electrical conductivity, morphology, and thermal degradation of (poly[vinyl chloride])/(poly[ethylene oxide])/PAni (PVC/PEO/PAni) conductive films was studied. The tensile strength and modulus of elasticity of PVC/PEO/PAni conductive films decreased with an increase in the PAni loading. At high PAni content, the PVC/PEO/PAni conductive films exhibited higher electrical conductivity and thermal stability than lower filler loadings. A scanning electron micrograph morphology study showed that the PAni could significantly improve interaction at the interface of the filler into the PVC/ PEO phase. The PVC/PEO/PAni conductive films are known to interact with chemical samples while maintaining good compatibility and good application of conductive polymer for use in gas sensors. J. VINYL ADDIT. TECHNOL., 00:000-000, 2015.

No abstract

The effects of carbon black (CB) loading on the tensile properties, electrical conductivity and swelling behavior of PVC/PEO conductive film were studied. Thin conductive film incorporation of inorganic filler, carbon black and PVC-PEO polymer blend were prepared by solution casting method. The results show that tensile strength and modulus of elasticity increase with increasing carbon black loading until 25 wt%. The percentage of mass swell test were increase with increasing carbon black loading. The result also shows that electrical conductivity of the PVC/PEO conductive film increase linearly with the carbon black loading.

This paper is focused to investigate the effect of treated natural fiber (typha latifolia) content on tensile and morphology properties of polylactic acid (PLA)/treated typha latifolia (T-TyLa) composites. The composite was compounded using heated two roll mill and the composite samples were prepared through compression molding. Tensile test and scanning electron microscopy (SEM) analysis were carried out to study the properties of PLA/T-TyLa composites. The results showed that the tensile strength of PLA/T-TyLa composites was decreased for about 43% with initial addition of T-TyLa content. The tensile modulus of the composites was increased (23%-91%) with increasing of fiber content. However, increased in fiber content reduced the elongation at break for about 53%-67% of PLA/T-TyLa composites. The optimum increment was obtained at 30 wt% of fiber content. SEM results showed that fiber dispersion was better for PLA/T-TyLa composites at lower fiber content.

No abstract

Blending method of two or more polymer is well-established strategy to modify the physical properties without synthesizes the new polymer system. While adding magnetic filler will change the magnetic properties of the polymer as an insulator to the materials that are magnetic. The TPU/NR blends as matrix was prepared from thermoplastic polyurethane (TPU) and natural rubber (NR) in the ratio 85/15 with 1-5 wt% NiZn ferrites. The value of saturation magnetization (Ms), remanance (Mr) increased, while coercive force (Hc) decreases with increasing filler loading. For the electrical properties, resistivity decreased and conductivity increased with the increase of NiZn ferrite loading in the blends.

The purpose of this study is to evaluate the thermal degradation of hybridize doped poly(dioctylfluorene) (PF8) film with polydimethylsiloxane (PDMS). The hybridized PF8/PDMS films were produced using solvent casting technique. The poly(dioctylfluorene) was dissolved using chloroform and subsequently polydimethylsiloxane was added prior mixing. Three different concentrations of PF8 were used to prepare the doped film. After casting, the samples were put in an oven at 100°C for 5 minutes for curing process. Later the thermal degradation test was conducted on the prepared sample for the duration of 1 hour, 2 hours, 3 hours and 24 hours to observe the effect of temperature on the photoluminescence properties of PF8. UV-visible spectroscopy was mainly used to measure the absorption intensity of the hybridized materials. It was configured that the optimum doped concentration for PF8 with PDMS is by using 5.0×10-3 mol of PF8. This is due to a good solubility of PF8 and easy to be casted.