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5.411 Aktuelle Fachpublikationen aus der Branche Verfahrenstechnik


Numerical modeling of multilayer film coextrusion with experimental validation

18.10.2014 | James Champion, M. Kieran Looney, Mark J.H. Simmons, Polymer Engineering and Science, 2014

Computational fluid dynamics (CFD) using a finite volume technique and the volume of fluid method of interface tracking is used to model the production of polyester‐based multilayered films via coextrusion. Experimental methods encompass both overall flow validation and secondary layer thickness ...


Microwave processing of syntactic foam from an expandable thermoset/thermoplastic mixture

18.10.2014 | Yifeng Hong, Xudong Fang, Donggang Yao, Polymer Engineering and Science, 2014

In this work, a microwave expansion process to produce thermoset‐matrix syntactic foam containing thermoplastic foam beads was designed and developed. Expandable polystyrene (EPS) microspheres and epoxy resin were chosen as a model material system. This process is featured with a capability to ...


The pool fire case for pressure relief: Radiation exposure limited by fuel supply

18.10.2014 | Debby Sielegar, Freeman Self, Process Safety Progress, 2014

In design of pressure relief systems, a pool fire is one of the most typical relief cases. The first step in the fire relief calculation is determining the heat flux input from the fire and methods include the simple to the very complex, covering a myriad of factors and configurations. This ...


Design intent for hazard and operability studies

18.10.2014 | Paul Baybutt, Process Safety Progress, 2014

The Hazard and Operability (HAZOP) Study undoubtedly is the most commonly used process hazard analysis method in the world today. It is based on considering deviations from the design intent for a process to identify hazard and operability scenarios. Often, HAZOP Study practitioners generate ...


Mechanical and thermal properties of potassium salts of poly(ethylene‐co‐ethylacrylate): Polyolefin ionomers in the absence of acid groups

18.10.2014 | Masataka Aoyama, Tomonori Koda, Ken Miyata, Taichi Nishio, Akihiro Nishioka, Polymer Engineering and Science, 2014

The thermal and mechanical properties of ionomers prepared by partial saponification of poly(ethylene‐co‐ethylacrylate) (EEA) with potassium were investigated by using differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). The Vicat softening temperature (VST) and bending ...


Effect of fiber size on structural and tensile properties of electrospun polyvinylidene fluoride fibers

18.10.2014 | Avinash Baji, Yiu‐Wing Mai, Shing‐Chung Wong, Polymer Engineering and Science, 2014

We use electrospinning to obtain polyvinylidene fluoride (PVDF) fibers and demonstrate simultaneous improvements in β‐crystal microstructure and in tensile properties of fibers with reduction of their diameter. PVDF fibers with average diameters ranging from 70 to 400 nm are obtained by ...


Tensile fatigue behavior of polyamide 66 nanofiber yarns

18.10.2014 | Sara Asghari Mooneghi, Ali Akbar Gharehaghaji, Hossein Hosseini‐Toudeshky, Giti Torkaman, Polymer Engineering and Science, 2014

Nanofiber yarns with twisted and continuous structures have potential applications in fabrication of complicated structures such as surgical suture yarns, artificial blood vessels, and tissue scaffolds. The objective of this article is to characterize the tensile fatigue behavior of continuous ...


Effects of an ionic liquid as an additive on the thermal denaturation/degradation of lysozyme crystals

17.10.2014 | Zhanzhong Wang, Wenzhi Fang, Lijie Li, Yan Li, Xiaoting Yu, Qing Gu, Fengjuan Zhou, Asia-Pacific Journal of Chemical Engineering, 2014

ABSTRACT Ionic liquids (ILs) have biomaterial applications and are used for protein crystallization. The present study explores the thermal denaturation and degradation kinetics of the lysozyme crystals induced by IL [C4mim]Cl using differential scanning calorimetry (DSC). Lysozyme crystals ...


Processing oxidic waste of lead‐acid batteries in order to recover lead

17.10.2014 | Traian Buzatu, Mircea Ionut Petrescu, Valeriu Gabriel Ghica, Mihai Buzatu, Gheorghe Iacob, Asia-Pacific Journal of Chemical Engineering, 2014

ABSTRACT The main process parameters have been investigated with a relatively new method for lead recovery from oxidic paste. The method consisting in leaching with NaOH and is also useful for processing other secondary resources (volatile dusts resulted from metallurgical extraction of lead ...


Analysis of the transformation behaviors of a Chinese coal ash using in‐/ex‐situ XRD and SEM‐EXD

17.10.2014 | Xiongchao Lin, Caihong Wang, Jin Miyawaki, Yonggang Wang, Seongho Yoon, Isao Mochida, Asia-Pacific Journal of Chemical Engineering, 2014

ABSTRACT Crystal and phase transitions of a Chinese Datong coal ash were evaluated using room temperature X‐ray diffraction (RT‐XRD), in‐situ high temperature (HT)‐XRD, and scanning electron microscope combining energy dispersive X‐ray analysis (SEM‐EDX) as temperature varied from 300 °C to ...


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