Radiation fabrication and characterization of the nanocomposite: Waste polyethylene /ethylene propylene diene/treated nanokaolin

Abstract

In this study, Kaolin modified with vinyltriethoxysilane (SMK) was compounded with the blend, waste polyethylene /ethylene propylene diene monomer (EPDM), 50/50 wt%, by melt intercalation. The effect of SMK loading on the physicomechanical properties of the blend was examined by varying its incorporation (3–15 phr). The composites were irradiated using gamma irradiation within the range 25–200 kGy. Tensile and modulus parameters were investigated at various feed ratios of SMK at variable gamma radiation dose. The thermal stability was examined for various composites using thermogravimetric analysis. The results showed that the tensile properties increased with increasing filler loading, conversely, swelling index reduced. Furthermore, the chemical crosslink density of 0.96 at 15 phr SMK indicated utmost reinforcement through blend‐filler matrix. Similarly the morphological studies, by scanning electron microscopy, supported the structural impact at that feed via improvement in the failure properties of the resulting composite. POLYM. COMPOS., 38:616–623, 2017. © 2015 Society of Plastics Engineers

Fabrication and characterization of gamma‐irradiated nanomarble/acrylonitrile and styrene butadiene rubber nanocomposites

“…The obtained outcomes are supported by the mechanical and thermal analysis collected data. The appearance of the crystalline phase of filler intercalated in the rubber phase was observed before in EPDM filled with kaolinite [ 18 ] and NBR reinforced with waste ceramic dust. [ 9 ] It is worth noted, that identical XRD pattern was gained for all NBR and SBR nanocomposites, that is, no alteration in crystallinity due to filling with waste nanomarble.…”

“…Furthermore, C–H bond stretching represented in TWM at 2982 cm −1 unlike in its shape and intensity about from appeared in WM itself due to silane treatment. [ 18 ]…”

Effect of nanofiller on the ageing of rubber seal materials under gamma irradiation

“…Also, the increase in crosslinking density during irradiation is ascribed to inter-polymer chains crosslinking as well as between polymer chains and the silane coupling agent. 24 More important irradiation doses would improve the crosslinking content leading certainly to maintenance and replacement of polymer. 32 The CS values obviously decrease with increasing concentrations of unmodified and modified nanosilica in the NBR matrix at all radiation doses.…”

“…9 Also, the increase in crosslinking density during irradiation is ascribed to inter-polymer chains crosslinking as well as between polymer chains and the silane coupling agent. 24 The crosslinking density of NBR/cerium ions composites increases with the increase of the concentration of cerium salts. 25 Abou Zeid 26 was found that values of swelling number of NBR/EPDM blend loaded composites decreased with increasing the degree of loading with the CB filler.…”

Gamma irradiation of polyethylene nanocomposites for food packaging applications against stored‐product insect pests

“…It was observed that as radiation dose increases up to 100 kGy, the gel content increases at all concentrations. The increase in crosslinking density during irradiation is ascribed to interpolymer chain crosslinking as well as between polymer chains and the silane coupling agent . Thus, the developed crosslinking networks could reduce the solubility of the HDPE matrix in hot benzene and increase the gel content of composites .…”