62 Improvement in Power Efficiency of Injection Molding Machine by Reduction in Plasticization Losses Muhammad Khan, Mechanical Engineering Department, HITEC University, Taxila, Pakistan Nizar Ullah Khan, Department of Mechanical Engineering, Oakland University, Rochester, MI, USA Muhammad Junaid Aziz, Mechanical Engineering Department, University of Engineering & Technology, Taxila, Pakistan H...

The time-dependent CO2-induced plasticization behavior of glassy Matrimid® 5218 polymer membranes at supercritical conditions up to 120 bar was investigated. Glassy polyimide were conditioned with both gaseous CO2 and liquid-like sc-CO2. during permeation sorption correlated the intrinsic membrane properties fluid properties. In region concentration increased slightly over time, while in sc-CO2...

This paper describes recent progress made in the use of high pressure or supercritical fluids to process polymers into three-dimensional tissue engineering scaffolds. Three current examples are highlighted: foaming of acrylates for use in cartilage tissue engineering; plasticization and encapsulation of bioactive species into biodegradable polyesters for bone tissue engineering; and a novel las...

A novel solid-state polymer electrolyte was constructed using layer-by-layer (LbL) polyelectrolyte assembly of linear poly(ethylenimine) (LPEI) and poly(acrylic acid) (PAA), combined with a plasticization step using oligoethylene glycol dicarboxylic acid (OEGDA). This composite film exhibits a relatively high ionic conductivity of 9.5 x 10(-5) S/cm at 25 degrees C and 22% relative humidity. Det...

To provide comprehensive data on creep behaviors at relative humidity (RH) isohume conditions and find the basic characteristics of mechano-sorptive (MS) creep (MSC), the tensile creep behaviors, "viscoelastic creep (VEC)" at equilibrium moisture content and MSC during adsorption process, were performed on Chinese fir in the longitudinal direction under 20%, 40%, 60% and 80% RH (25 °C) and at 1...

Internal plasticization of poly(vinyl chloride) (PVC) was achieved in one-step using copper-mediated atom transfer radical polymerization to graft different ratios random n-butyl acrylate and 2–2-(2-ethoxyethoxy)ethyl copolymers from defect sites on the PVC chain. Five polymers were made with poly(butyl acrylate) (PBA) poly(2–2-(2-ethoxyethoxy)ethyl (P2EEA); glass transition temperatures (Tg) f...

The low-energy vibrational density of states (VDOS) of hydrogenated or deuterated poly(methyl methacrylate) (PMMA) plasticized by dibutyl phtalate (DBP) is determined by inelastic neutron scattering. From experiment, it is equal to the sum of the ones of the PMMA and DBP components. However, a partition of the total low-energy VDOS among PMMA and DBP was observed. Contrary to Raman scattering, ...

Abstract The use of eco-friendly bioplastics has become a viable solution to reduce the accumulation petrochemical products in biosphere and decrease microplastic contamination. In this study, we used low-quality cotton fibers that lack textile applications prepare bioplastics. We dissolved N , -dimethylacetamide/lithium chloride (DMAc/LiCl) solvent system converted cellulose solutions strong, ...