Chemical Engineering: Recent submissions
Now showing items 441-460 of 1174
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Nanocomposite photoactuators based on an ethylene vinyl acetate copolymer filled with carbon nanotubes
(2013 , Article)This paper reports strong, reversible actuation of nanocomposites on the base of ethylene vinyl acetate (EVA) filled with multiwalled (MWCNTs) and singlewalled carbon nanotubes (SWCNTs). The carbon nanotubes (CNTs) dispersion ... -
Nematic opto-mechanical actuators for the fabrication of refreshable tactile systems
(2013 , Conference Paper)Nematic elastomers are promising materials for the fabrication of actuators due to their ability to reversibly contract and expand during phase transitions triggered by external stimuli. We present a refreshable tactile ... -
Mechanical, sorption and adhesive properties of composites based on low density polyethylene filled with date palm wood powder
( Elsevier Ltd , 2014 , Article)Low density polyethylene (LDPE) was blended with date palm wood powder (DPW) to prepare composites with concentrations of filler ranging from 10 to 70. wt.%. The Youn?s modulus of the composites significantly increased ... -
Tactile device based on opto-mechanical actuation of liquid crystal elastomers
(2014 , Article)Nematic elastomers are promising materials for the fabrication of actuators due to their ability to reversibly contract and expand during phase transitions triggered by external stimuli. Thus, actuation can be produced on ... -
Unconventional experimental technologies used for phase change materials (PCM) characterization: Part 2 - Morphological and structural characterization, physico-chemical stability and mechanical properties
( Elsevier Ltd , 2015 , Article)Due to the high interest of appropriate characterization of PCM and hybrid PCM composites, different research centres and universities are using several material characterization techniques not commonly used with PCM, to ... -
Electrical properties of lithium ferrite nanoparticles dispersed in a styrene-isoprene-styrene copolymer matrix
( Springer Netherlands , 2015 , Book chapter)The main goal of this work was the preparation and study of a composite material by dispersing lithium ferrite particles in a polymeric matrix. The matrix selected was styrene-b-isoprene-b-styrene (SIS) copolymer. Lithium ... -
Mechanical and Electrical Properties of Styrene-Isoprene-Styrene Copolymer Doped with Expanded Graphite Nanoplatelets
( Hindawi Publishing Corporation , 2015 , Article)The molecular dynamics of a triblock copolymer and of expanded graphite nanoplatelets were investigated. Composites were prepared using the solution technique. The effects of filler addition and of filler-matrix interactions ... -
Unconventional experimental technologies available for phase change materials (PCM) characterization. Part 1. Thermophysical properties
( Elsevier Ltd , 2015 , Article)The use of thermal energy storage by phase change materials (PCM) is increasing in interest for building applications. For the deployment of the technology, appropriate characterization of PCM and hybrid PCM is essential, ... -
Self-standing elastomeric composites based on lithium ferrites and their dielectric behavior
( American Institute of Physics Inc. , 2014 , Article)Lithium ferrite (LiFe5O8) is an attractive material for technological applications due to its physical properties, which are significantly dependent on the preparation method and raw materials. In this work, LiFe5O8 ... -
Effect of expanded graphite on the phase change materials of high density polyethylene/wax blends
( Elsevier , 2015 , Article)Phase change materials fabricated from high density polyethylene (HDPE) blended with 40 or 50 wt% commercial wax (melting point of 43.08�C) and up to 15 wt% expanded graphite (EG) were studied. Techniques including scanning ... -
Thermal properties of phase-change materials based on high-density polyethylene filled with micro-encapsulated paraffin wax for thermal energy storage
( Elsevier Ltd , 2015 , Article)Microcapsules consisting of paraffin wax cores with a melting point of approximately 42 °C and a melamine-formaldehyde resin shell were synthesized using in situ polymerization. These microcapsules have a uniform distribution ... -
Positive influence of expanded graphite on the physical behavior of phase change materials based on linear low-density polyethylene and paraffin wax
( Elsevier B.V. , 2015 , Article)The preparation of Phase Change Materials (PCM) with improved thermal conductivity, based on linear low-density polyethylene (LLDPE), paraffin wax with a melting point of approximately 42 °C and expanded graphite as well ... -
In situ electron microscopy of Braille microsystems: Photoactuation of ethylene vinyl acetate/carbon nanotube composites
( Institute of Physics Publishing , 2015 , Article)The development of new types of tactile displays based on the actuation of composite materials can aid the visually impaired. Micro/nano systems based on ethylene vinyl acetate (EVA) polymeric matrices enriched with ... -
Thermal properties of smart microencapsulated paraffin/plaster composites for the thermal regulation of buildings
( Elsevier Ltd , 2015 , Article)Smart plaster composites were manufactured by mixing plaster with different amounts of Micronal? DS5001X microcapsules containing a paraffin mixture with a melting point of 26 �C to develop new construction materials with ... -
Spider silk fibers: Synthesis, characterization, and related biomedical applications
( Elsevier , 2019 , Book chapter)Compared to silkworm silks, spider silks (SS) are considered stronger, most elastic, and tougher biomaterials. Web-weaving spiders use impressive silks where the proteins in the silks can be described as virtually nondiverged. ... -
Nanomechanical properties of plasma treated polylactic acid
( Maney Publishing , 2015 , Article)In this work, a radio frequency discharged plasma generated in air atmosphere by pressure has been used to modify polylactic acid (PLA) surface. The results were evaluated through nanoindentation testing. Contact angle ... -
The stabilizing effect of expanded graphite on the artificial aging of shape stabilized phase change materials
( Elsevier Ltd , 2015 , Article)Artificial aging of Shape Stabilized Phase Change Materials (SSPCM) based on linear low density polyethylene (LLDPE) and paraffin wax (W) modified with various amounts of expanded graphite (EG) was investigated and reported ... -
Smart non-woven fiber mats with light-induced sensing capability
( MDPI AG , 2020 , Article)This article is focused on the facile procedure for 2D graphene oxide (GO) fabrication, utilizing reversible de-activation polymerization approach and therefore enhanced compatibility with surrounding polymer matrix. Such ... -
Controllably coated graphene oxide particles with enhanced compatibility with poly(ethylene-co-propylene) thermoplastic elastomer for excellent photo-mechanical actuation capability
( Elsevier B.V. , 2020 , Article)This paper reports the utilization of the controllable coating via SI-ATRP technique as a promising approach for controlling stimuli-responsive capabilities of graphene oxide (GO) based nanocomposites. Various polymer ... -
Phase change materials for thermal energy storage applications in greenhouses: A review
( Elsevier Ltd , 2022 , Article)Greenhouses represent one of the largest energy-demanding sectors, requiring energy for indoor environment control for plant growth and crop yield. Thermal energy storage using phase change materials (PCMs) has been ...