The current work aims to develop environmentally friendly plastic materials by preparing a composite polypropylene/thermoplastic starch (PP/TPS) using melt-compounding process. In order improve the compatibility of two naturally incompatible polymers, natural Stipa tenacissima fibers treated on their surfaces and polypropylene (PP) pellets grafted with Maleic Anhydride (MA) were added mixture (...

Abstract This paper provides a formulation of an elastic-plastic beam model. The constitutive behaviour material after elasticity limit is considered perfect plastic. Although this not general plastic behaviour, it allows to minimize mathematical difficulties fulfil the idea: pre-integration trough thickness extended non-linearity. Three types deformation mechanisms are found: fully elastic, pl...

Perovskite nanocrystals (PNCs) are emerging luminescent materials for a wide range of technological applications. The broad adaptation PNCs will be greatly improved by addressing their intrinsically low stability and developing processes assembly into 2D 3D structures using facile approaches. Inspired the mechanism natural protection leaves, this paper proposes carnauba wax (CW) as an encapsula...

Abstract The transport of oxygen, nitrogen, and hydrocarbons C 1 –C 4 in polyimides based on 4,4'-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) biphenyl-3,3',4,4'-tetracarboxylic acid dianhydride (BPDA) diethyl toluene diamine (DETDA) has been studied. dependences the diffusion coefficient diffusant effective diameter solubility coefficients Lennard–Jones potential pair interaction have...

Currently, millions of kilograms HFCs and HFC mixtures are in use with no method for efficiently separating the components. Membranes an attractive refrigerant due to both lower energy consumption capital requirements compared alternative separation methods such as distillation. This study investigates poly(dimethylsiloxane) CyclAFlor™, amorphous copolymer 5 mol% perfluoro(butenyl vinyl ether) ...

Abstract In recent times, the attention of scientific community has been focusing on replacement petroleum-based polymers by others more environmentally friendly. this sense, bionanocomposites based glycerol-plasticized wheat starch and reinforced with cellulose nanocrystals (CNCs) were prepared a solvent-casting process to obtain friendly films. The plasticization was proven be complete in con...