AbstractAbstractThe potential use of sustainable polymer based composites, obtained from renewable resources, is revised in terms properties and envisaged applications. Using the typical specifications required within automotive industry as reference, these composites evaluated some alternative routes for property improvement are discussed. Specific examples development biodegradable polymeric presented including different types matrixes, e.g. starch blends poly(lactic acid), two natural...

We apply a macromolecular-orientation approach to produce high molecular weight polyethylene (HMWPE) + hydroxyapatite (HA) ductile composites with the stiffness and strength within range of human cortical bone. Our are produced different amounts (10 50% by weight) reinforcement two procedures: bi-axial rotating drum twin screw extrusion (TSE). The processing is conventional injection molding Scorim (shear controlled orientation in molding) under wide windows. Tensile testing performed...

Sentiment analysis emerged as an important research topic for its potential in tapping into the large amount of opinions that became a central piece social networks, providing companies who have any kind public feedback with new insights on their products and services.Research this field focuses mainly semantic aspects sentiment recognition and, more recent years, impact influence propagation opinions.Here we present model aggregates both these framework calculating global sentiments.The is...

Abstract BACKGROUND: Cytisus scoparius samples were processed with hot, compressed water (autohydrolysis treatments) to obtain both fiber‐containing solids (suitable as reinforcements for composites) and a liquid phase containing sugar oligomers derived from hemicelluloses. The solid autohydrolysis, mainly made up of cellulose lignin, was employed manufacturing polylactic acid (PLA)‐based biodegradable composites. mechanical properties, uptake thermal properties composites assessed. RESULTS:...

Modern companies face immense market pressure to meet customers' demands while ensuring the sustainability of business.Consumers are now requesting highly customized products and services, i.e. demanding mass customization from manufacturing companies.The complete value chain needs develop strategies enabling interaction with customers consumers, supporting features even co-design.This paper presents DIVERSITY approach, which consists on a methodology engineering environment in using social...

Fully biodegradable composites made from two polymer blend matrices (SEVA-C: starch and a copolymer of ethylene vinyl alcohol; SCA: cellulose acetate) short Alfa fibers were developed processed by conventional injection molding into standard tensile specimens. For each kind matrix, the influence reinforcement load was evaluated, using fiber amounts 0 to 30% (wt/wt). An optimization study carried out for composite SEVA-C with 10% fiber. The obtained results establish that produced present...

The recent years have seen an increasing interest from the companies to differentiate themselves competitors by enriching their portfolio with new product related services. introduction of Product Service System (PSS) worsened companies' economic performance since proposed PSSs were not designed using methodologies and tools created make them sustainable. In order overcome this problem, DIVERSITY project proposes a methodology that considers entire life cycle, identification customer's need...

Abstract This study explores new applications for wood fibres through their incorporation on plastic matrices, developing high performance compounds the automotive interior. Different grades of polypropylene were reinforced with pine and eucalyptus fibres, in order to compare properties specifications different vehicle parts. The composites produced using conventional plastics processing technologies, namely compounding twin-screw extruder injection molding. Mechanical properties, density,...

When intending to renovate an existing building, with energy efficiency and greenhouse gas emissions in mind, a building owner is always questioning himself if the available investment resources are being directed effective return there ways improve this return. In addition, it quite difficult identify all criteria be considered such decision how structure formal systematic process that involves necessary stakeholders. This paper presents innovative approach support decision-making when...

Companies are looking for new approaches and tools to help them meet their customer's demands, particularly the desire of customized products at lower costs. The paradigm product-service systems brings companies opportunity enlarging offer, services in an integrated way. This paper presents early prototype a software platform that supports designing PSSs using feedback information collected over value chain. described has been tested three industrial is currently being further developed.

The current business environment pressures companies to be more dynamic and co-operative innovative effectively solve existing problems. This work presents an integrated approach support innovation problem solving in virtual enterprises, based on efficient combination of technologies. system under development is described, test results industrial are presented some directions for future drawn.

The interest of the automotive industry on biodegradable and green composites is increasing dramatically due two environmental legislation that obliges automakers to reduce disposal waste from vehicles [1]. As an answer this recent demand several research groups are working development these composites. This work shows a loudspeaker front made different composites: PLA (polylactic acid) SCA (blend starch cellulose acetate) reinforced with percentages spent fibres. were previously extruded...

Objetivos: Os materiais provisórios em prótese fixa, face aos definitivos, são mais propensos à colonização bacteriana devido elevada porosidade e rugosidade de superfície menor adaptação marginal. Existem vários tipos resinas que podem ser utilizadas para a confeção fixos, nomeadamente, as adaptadas ao sistema CAD-CAM. estudos do comportamento biológico destas novas ainda escassos, o justifica esta investigação, cujo objetivo é comparar suscetibilidade diferentes na fixos adesão...

Manufacturing companies face a great need to improve competitiveness and strengthen market position. This pressure demands strong collaboration from all actors involved in the product or production value chain. However, manufacturing industry is still missing necessary support, methodologies tools, achieve efficient strategies. paper introduces an innovative approach support assembly systems, being developed scope of European project InAmI. The main idea combine agent, ambient intelligence...

Broom (Cytisus scoparius) samples were processed in media containing formic acid and hydrogen peroxide (MILOX process) to obtain cellulose-enriched solids. The chemical processing of broom was assessed by means a centered, second order factorial design experiments. Empirical models derived from the experimental data gave close interpretation patterns, enabled selection operational conditions for achieving extensive delignification hemicellulose removal, while minimizing dissolution...