This study investigates the use of low molecular weight poly(ethylene glycol) (PEG) as a plasticizer for poly(lactic acid) (PLA). PLA/PEG blend films were prepared using solvent casting method with varying mixing ratios. The analyzed differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and rheological analysis. results indicate that addition PEG affects thermal properties films. found glass transition cold crystallization temperatures decreased increasing content up to...

Bentonite-supported TiO2 (Montmorillonite (MMT)-TiO2) and Cu3TiO5 oxides (MMT-Cu3TiO5) nanomaterials were synthesized via a facile sustainable sol–gel synthesis approach. The XRD results indicate the presence of mixed phases, namely, anatase new semiconductor, Cu3TiO5, in material. specific surface area (SBET) exhibits notable increase with incorporation rising from 85 m2/g for pure montmorillonite to 245 MMT-TiO2 279 MMT-Cu3TiO5. lower gap energy MMT-Cu3TiO5 (2.15 eV) comparison (2.7...

This paper deals with the electro-optic (EO) properties of polymer-dispersed liquid crystals (PDLCs). Several systems are considered to analyze effects preparation conditions and film characteristics on EO response functions. Particular emphasis is put based mixtures commercial compound ASX-95, difunctional acrylate tripropylene diacrylate eutectic mixture low-molecular-weight E7. Other assess influence monomer functionality using for example trifunctional glycerylpropoxytriacrylate. Various...

In this report, indium-tin-oxide (ITO)-layer extraction from end-of-life (EOL) Liquid Crystal Displays (LCDs) was discussed by sulfuric acid leaching with simultaneous application of ultrasonication on the ITO-side glass/ITO panels, exhibiting various dimensions. Applying technique presents several advantages compared to traditional process such as fast and controllable kinetics, high yield indium tin, selective recovery these two metals possible, opportunity recycle neat glass separately...

In the present study, influence of diamond nanoparticles (DNPs) on dielectric properties nematic liquid crystal (LC) E7 from Merck has been considered. It is established that insertion DNPs leads to an increase in constant ε', as well a significant change electric conductivity σ LC. The growth ε' with concentration DNPs, CDNP, mainly caused by contribution DNP permittivity effective composite. character σ(CDNP) curves depends ionic purity LC E7: for samples based pure E7, detected, whereas...

A novel method for the preparation of immobilized α-, β-, and γ-cyclodextrins (α-, or γ-CD) on polypropylene (PP) nonwoven fabrics is presented. These new materials were prepared by graft-polymerization glycidyl methacrylate (GMA) onto PP filters using electron-beam technique, followed coupling γ-CDs with epoxide group. Optimization various reaction parameters such as time, temperature, irradiation dose, monomer, CD concentration was carried out. © 2000 John Wiley & Sons, Inc. J Appl Polym...

Biphenyl, a frequently encountered and resilient compound in wastewater, proves resistant to conventional treatment methods because of its enduring nature. It forms the structural basis for persistent organic pollutants such as PCBs. In this study, we explored adsorption biphenyl an organo-aqueous medium using both natural (Bent) organomodified (CTAB-Bent) bentonite clay. Our objective was highlight potential wastewater treatment. We analyzed physicochemical textural properties these clays...

Galactomannan/organomodified montmoriollonite (G1M/OM-MMT) nanocomposites and G2M/OM-MMT were biosynthesized using galactomannan (GM) organomodified montmorillonite (OM-MMT) with cetyltrimethylammonium bromide (CTAB, 10−2 M) designed for antioxidant activities. Furthermore, was isolated from fruit rind of Punica granatum grown in the Djelfa region, Algeria, nanoclay used this work an Algerian montmorillonite. Two different types synthetized amounts GM OM-MMT (w/w) [GM1/OM-MMT (0.5:1)...

The chemical structure of low‐density polyethylene (PE), which is responsible for its incompatibility and durability, has a significant impact on the degradation process. present study examined effects combining plasma treatment technology with addition prooxidant (designated hereafter as Ox) into PE matrix hydrophilicity resulting blends. films PE/poly( ε ‐caprolactone) (PCL) Ox‐PE/PCL blends their homopolymers were subjected to radiofrequency (RFP) treatment. Subsequently, samples compost...

X-ray computed tomography (CT) images showing cross-sectional and longitudinal views of a 21700 Li-ion cell: (A) pristine after 0 V discharge, (B) short-circuit (ESC), highlighting internal structural changes.

This report focusses on the modification of physical structure and chemical properties a bentonite clay from Hammam Boughrara region Maghnia district in western Algeria to maximize its adsorption capacity. The purified (called B) was modified, either by acid activation with 1M sulfuric (B-Act), or intercalation cationic surfactant cetytrimethyl ammonium bromide (CTAB), applying cation exchange capacity (CEC) 100% B-CTAB). Modification B also introduced combining these two steps...

Liquid crystals with high dielectric anisotropy, low operational thresholds, and significant birefringence (Δ

Abstract Dielectric and electro-optical properties of nematic liquid crystals (LCs) doped with diamond nanoparticles (DNPs) have been investigated. It is established that the effect DNPs on electric conductivity depends purity LC; adsorb ions from LCs a substantial content ionic impurities, but release their own in highly pure LCs. The also influence LC permittivity due to orientational disordering contribution overall samples. In contrast LC-Carbon Nanotubes counterparts, LC-DNPs composites...

In the present work, dielectric properties of recycled liquid crystals (LCs) (non-purified, purified, and doped with diamond nanoparticles at 0.05, 0.1, 0.2 wt%) were investigated. The studied LC mixtures obtained from industrial recycling end-of-life displays presenting mainly nematic phases. Dielectric measurements carried out room temperature on a frequency range 0.1 to 106 Hz using an impedance analyzer. amplitude oscillating voltage was fixed 1 V cells homogeneous homeotropic...

Phase diagrams of unpolymerized and UV-polymerized 2-ethyl hexyl acrylate (EHA) mixtures with the liquid crystal E7 are established using optical microscopy differential scanning calorimetry. Both show upper critical solution temperature behavior. From 50 to 90 wt % (LC), (I+I) phase located between (N+I) (I) phases was clearly shown. The nematic inside droplets exhibits a twisted radial structure indicating that homeotropic anchoring occurs at polymer interface. experimental were...

Abstract An improved procedure for the anionic polymerization of hexamethylcyclotrisiloxane (D 3 ) initiated by a monofunctional lithium derivative is reported. The initiator seeding solution preferably prepared in benzene, and tetrahydrofuran used as cosolvent which makes presence additional promoters useless. main advantage this that it delays appearance bimodality believed to result from sudden change aggregate molecularity during course reaction. Applying method, poly(dimethylsiloxane)...