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5.661 Aktuelle Fachpublikationen aus der Branche Verfahrenstechnik

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Graphene coating assisted injection molding of ultra‐thin thermoplastics

09.04.2015 | Eusebio Duarte Cabrera, Panpan Zhang, Wei‐Ching Liao, Ying‐Chieh Yen, Jiangfeng Yu, Jose Castro, L. James Lee, Polymer Engineering and Science, 2015

High strength light weight parts are critical for the development of new technologies, particularly electronic devices, such as laptop computers, smart phones, and tablet devices. Injection molded plastics and composites are excellent choices for mass producing such parts. As the part thickness ...

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Statistical Optimization for Production of Light Olefins in a Fluidized‐Bed Reactor

09.04.2015 | Hassan Sharifi Pajaie, Majid Taghizadeh, Chemical Engineering & Technology, 2015

Abstract The methanol‐to‐olefins reaction (MTO) was studied in a small‐scale fluidized‐bed reactor over synthesized silicoaluminophosphate (SAPO‐34) catalysts. Mesoporous nanocrystalline SAPO‐34 molecular sieves were synthesized hydrothermally by ultrasonic and microwave‐assisted aging ...

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Generation of Crystalline Microcontainers of Salicylic Acid

08.04.2015 | Julia Seidel, Joachim Ulrich, Chemical Engineering & Technology, 2015

Abstract The formation of liquid inclusions is frequently observed to be disrupting in crystallization processes. But such crystals containing liquid inclusions might offer the possibility to be used as container systems by encapsulating other substances inside the inclusions. Experimental ...

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Crystallization of Terutroban Sodium Salt Hydrate from the Deliquescent State

08.04.2015 | Nicolas Couvrat, Yohann Cartigny, Julie Linol, Lucile Vaysse‐Ludot, Pascal Langlois, Gérard Coquerel, Chemical Engineering & Technology, 2015

Abstract Terutroban sodium salt (Teru‐Na) is a solid active pharmaceutical ingredient initially produced in its anhydrous form. The crystallization of a new dihydrate was established using liquid‐assisted grinding and the liquid‐liquid interface process. The stability of the Teru‐Na ...

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Effect of pH on Aerobic Granulation and Treatment Performance in Sequencing Batch Reactors

07.04.2015 | Samira Rezasoltani, Jalal Shayegan, Sajjad Jalali, Chemical Engineering & Technology, 2015

Abstract Two sequencing batch reactors were operated to investigate the effect of influent alkalinity and reactor pH on aerobic granulation. In the first reactor R1 with high influent alkalinity the pH was adjusted in the neutral range, and in the second reactor R2 with low alkalinity the pH ...

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Mechanisms of orientational and photoelastic birefringence generation of methacrylates for the design of zero–zero‐birefringence polymers

07.04.2015 | Houran Shafiee, Shotaro Beppu, Shuhei Iwasaki, Akihiro Tagaya, Yasuhiro Koike, Polymer Engineering and Science, 2015

The intrinsic birefringence Δn0 and photoelastic coefficient C of poly(methyl methacrylate), poly(2,2,2‐trifluroethyl methacrylate), poly(phenyl methacrylate), and poly(2,2,3,3,3‐pentafluorophenyl methacrylate) were determined. We categorized these methacrylate polymers into four ...

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Enhancement of dielectric and energy density properties in the PVDF‐based copolymer/terpolymer blends

07.04.2015 | Amir Ullah, Ata Rahman, Chang Won Ahn, Muneeb‐ur Rahman, Aman Ullah, Zia‐ur Rehman, Muhammad Javid Iqbal, Ill Won Kim, Polymer Engineering and Science, 2015

We investigated the high dielectric constant and energy storage density for the blends of P(VDF‐TrFE) copolymer and P(VDF‐TrFE‐CFE) terpolymer. The degradation of coercive field (Ec) and remnant polarization (Pr) of the copolymer under an electric field of 125 MV/m was observed and the copolymer ...

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Generation and Deposition of Organic Nanoparticles in a Liquid Ring Pump

02.04.2015 | Claudia Brunn, Sokratis Sinanis, Susanne Mall‐Gleissle, Karlheinz Schaber, Chemical Engineering & Technology, 2015

Abstract A new method for the production of organic nanoparticles or nanosuspensions in a liquid ring vacuum pump is presented. A hot carrier gas charged under vacuum conditions with poorly water‐soluble organic substances is compressed and simultaneously cooled by the partially evaporating ...

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Multi‐Objective Optimization of Pseudo‐Dynamic Operation of Naphtha Pyrolysis by a Surrogate Model

02.04.2015 | Yangkun Jin, Jinlong Li, Wenli Du, Feng Qian, Chemical Engineering & Technology, 2015

Abstract A simple pseudo‐dynamic surrogate model is developed in the framework of the state space model with the feed‐forward neural network to replace the complex free radical pyrolysis model. The surrogate model is then applied to investigate the multi‐objective optimization of two key ...

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Effect of Gravity on the Hydrodynamics in an Unbaffled Stirred Vessel

01.04.2015 | Feng L. Yang, Shen J. Zhou, Chemical Engineering & Technology, 2015

Abstract The hydrodynamics in an unbaffled stirred vessel were simulated in order to highlight the effect of gravity on pressure and velocity distributions. Two fluids with different viscosity were studied for the laminar and turbulent flow regimes, respectively. The simulation results were ...

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