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4.142 Aktuelle Fachpublikationen zum Thema temperature

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Antimicrobial carbon materials incorporating copper nano‐crystallites and their PLA composites

05.02.2016 | Anna Ilnicka, Mariusz Walczyk, Jerzy P. Lukaszewicz, Katarzyna Janczak, Rafal Malinowski, Journal of Applied Polymer Science, 2016

ABSTRACT In the first stage, carbon materials were manufactured from chitin and chitosan as the main precursor. Chitin and chitosan were impregnated with Cu2+ ions. Using heat treatment, the organic matter (biopolymers) was transformed into a porous carbon matrix, while copper ions were ...


Acid catalyst influence on the polymerization time of polyfurfuryl alcohol and on the porosity of monolithic vitreous carbon

05.02.2016 | Fábio Dondeo Origo, Júlia Cassiano Arisseto, Fernanda Lini Seixas, Walter Miyakawa, Alvaro José Damião, Sílvia Sizuk ..., Journal of Applied Polymer Science, 2016

ABSTRACT This study compares the influence of different acid catalysts on the polymerization rate of polyfurfuryl alcohol (PFA) precursor and especially on the respective porosity of Monolithic Vitreous Carbon (MVC) produced from that. Five acid catalysts commonly used were compared: ...


Toughening effect of CPE on ASA/SAN binary blends at different temperatures

05.02.2016 | Zepeng Mao, Jun Zhang, Journal of Applied Polymer Science, 2016

ABSTRACT The effect of chlorinated polyethylene (CPE) on the impact toughness of acrylonitrile–styrene–acrylic (ASA) terpolymer/styrene–acrylonitrile copolymer (SAN) binary blends (25/75, w/w) was systematically investigated at three different temperatures (−30 °C, 0 °C, and 23 °C). With the ...


Developing a mathematical model for the oxidative dehydrogenation of propane in a fluidized bed reactor

05.02.2016 | Ali Torabi, Mohammad Kazemeini, Moslem Fattahi, Asia-Pacific Journal of Chemical Engineering, 2016

Abstract In this research, a mathematical model to simulate a two‐phase fluidized bed reactor for oxidative dehydrogenation of propane to propylene was developed. The developed model was solved numerically using the matlab software. Moreover, effects of the reaction temperature, operating ...


Experimental measuring set‐up and procedure for the traction coefficient on roller‐on‐disc contact

04.02.2016 | A. Gama, T. Cousseau, B. Graça, J. Castro, J. Seabra, Tribotest, 2016

Abstract A pin‐on‐disc machine was modified to measure traction coefficient and the potential of contact difference under controlled conditions of slide‐to‐roll ratio, temperature, contact pressure and entrainment speed; oil, grease, grease's base oil and bleed‐oil were tested. This new ...


The first urea‐based ionic liquid‐stabilized magnetic nanoparticles: an efficient catalyst for the synthesis of bis(indolyl)methanes and pyrano[2,3‐d]pyrimidinone derivatives

04.02.2016 | Mohammad Ali Zolfigol, Roya Ayazi‐Nasrabadi, Saeed Baghery, Applied Organometallic Chemistry, 2016

Urea‐based ionic liquid stabilized on silica‐coated Fe3O4 magnetic nanoparticles, {Fe3O4@SiO2@(CH2)3‐Urea‐SO3H/HCl}, as an unexceptionable and smooth releasing urea fertilizer in alkali soils was synthesized and fully characterized using Fourier transform infrared, UV–visible and ...


The electrospun polyhydroxybutyrate fibers reinforced with cellulose nanocrystals: Morphology and properties

03.02.2016 | Piyaporn Kampeerapappun, Journal of Applied Polymer Science, 2016

ABSTRACT Polyhydroxybutyrate (PHB) has been used in the biomedical field. However, the poor mechanical properties of PHB have limited its application. Here, electrospun fibrous nanocomposite mats reinforced with cellulose nanocrystals (CNCs) were fabricated by using PHB as polymeric matrix. ...


Determination of methylene bridge crosslinking in chloromethylated PS‐DVB resins

03.02.2016 | G. Leslie Burnett, John C. Rohanna, Steve Rosenberg, Alfred K. Schultz, Javier Read de Alaniz, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT We present the development of a method for the determination of methylene bridge crosslinking in 13C‐labeled chloromethylated polystyrene‐divinylbenzene resins. Our system uses a new room temperature reduction of the chloromethyl groups that circumvents the possible challenges ...


Influence of mineral admixtures on mechanical properties of self‐compacting concrete under elevated temperature

02.02.2016 | Anand N, Antony Godwin I, Prince Arulraj G, Fire and Materials, 2016

Summary Self‐compacting concrete (SCC) is a form of concrete that is capable of flowing into the congested interior of formwork and consolidating under the action of its own weight without segregation and bleeding. In the present investigation, an attempt has been made to study the effect of ...


Morphology and dynamical mechanical properties of poly ether ketone ketone (PEKK) with meta phenyl links

02.02.2016 | Luis Quiroga Cortés, Nicolas Caussé, Eric Dantras, Antoine Lonjon, Colette Lacabanne, Journal of Applied Polymer Science, 2016

ABSTRACT Poly ether ketone ketone (PEKK) with different proportion of meta phenyl links were investigated by combining differential scanning calorimetry and dynamic mechanical analysis. The influence of the Terephthalyl/Isophthalyl isomers (T/I) ratio on the vitreous phase is mild, the shift ...


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