Preparation and performance of high‐impact polystyrene (HIPS)/nano‐TiO₂ nanocomposites

Abstract

High-impact polystyrene (HIPS)/nano-TiO 2 nanocomposites were prepared by surface pretreatment of nano-TiO 2 with special structure dispersing agent (TAS) and master batch manufacturing technology. The results show that when the nano-TiO 2 content is 2%, the notched impact strength, tensile strength, and elastic modulus of HIPS/ nano-TiO 2 nanocomposites increased to a maximum. This result indicates that nano-TiO 2 has both toughening and reinforcing effects on HIPS. The heat-deflection temperature and flame-retardance of HIPS/nano-TiO 2 nanocomposites are also obviously improved as the nano-TiO 2 content is increased. The nanocomposites manufactured by the twostep method have better mechanical properties than that made by a one-step method. HIPS/nano-TiO 2 nanocomposites are also non-Newtonian and pseudoplastic fluids.

Impact fracture toughness evaluation by essential work of fracture method in high density polyethylene filled with zeolite

“…This means that it was relatively hard to initiate fracture on the 5 wt.% zeolite/HDPE composite but once fracture initiated, the pure HDPE was more resistant than 5 wt.% zeolite/HDPE composite against fracture propagation. These fracture toughness characteristics are similar to the results of the research conducted by Zhang et al [25,26]. They reported that the impact strength increased with filler content increased up to about 6 wt.% but decreased with filler content increased further.…”

Hydrophilicity and crystallization behavior of PVDF/PMMA/TiO2(SiO2) composites prepared by in situ polymerization

“…Because the inherent hydrophilicity of PMMA is limited, the hydrophilicity of the in situ PVDF/PMMA blend is not much higher. However, inorganic materials (like TiO 2 and SiO 2 ) always have high hydrophilicities due to their high surface energies [21,22]. Therefore, in the work described in this paper, inorganic TiO 2 and SiO 2 nanoparticles were introduced during the in situ polymerization of MMA in PVDF in order to improve the hydrophilicity of PVDF.…”

Increasing the shelf life of pikeperch (Sander lucioperca) fillets affected by low-density polyethylene/Ag/TiO2 nanocomposites experimentally produced by sol-gel and melt-mixing methods

“…[3] Inorganic compounds that restrict pathogens are usually supplemented to the polymers by melt mixing or other processes in the ultra-fine phase dimension of dispersion behavior. [4] of nanoscale filler in the polymer medium. Transmission electron microscopy has been used to observe this process at high magnification.…”