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Thursday, July 30, 2020 | History

2 edition of In-line monitoring of polymer processing found in the catalog.

In-line monitoring of polymer processing

Ramin Reshadat

In-line monitoring of polymer processing

a multidisciplinary approach.

by Ramin Reshadat

  • 263 Want to read
  • 25 Currently reading

Published .
Written in English


The Physical Object
Pagination221 leaves.
Number of Pages221
ID Numbers
Open LibraryOL19070083M
ISBN 100612414930

(A): Any success heavily depends on the understanding of the processing for a product and polymer physics within that equipment. The analysis of the melting mechanisms in an extruder or banbury mixer or any other plasticating equipment requires the reliable physical property data for a given polymer resin. Polymer processing and analysis. With our state-of-the-art equipment and multi-talented team, we have been involved in a variety of polymer processing research projects. At the centre of all our projects is a desire to better understand the material properties so that .

Structure of BE Polymer Engineering () Course SEM - I Code Subject Teaching Scheme H/Week Examination Scheme Marks LECT PR DR In-Semester Assessment TW PR OR End-Semester Exam Polymer Materials & Compounding 4 2 -- 30 25 -- -- 70 Mold & Die Design 4 -- 2 30 - . The benefits in detail The detection coil’s two-channel technology provides the highest sensitivity to all metals, regardless of whether they are magnetic or not, even when they are embedded in the product.; At the same time, our systems exhibit the highest resistance to interference from vibrations and electrosmog.; The patented PROTECTOR metal separator guarantees secure, reproducible.

A comprehensive look at existing technologies and processes for continuous manufacturing of pharmaceuticals As rising costs outpace new drug development, the pharmaceutical industry has come under intense pressure to improve the efficiency of its manufacturing processes. Continuous process manufacturing provides a proven solution. Among its many benefits are: minimized waste, energy. One of the most efficient tools for process and quality control is in-line near infrared spectroscopy (ILNIRS), a high speed, continual process that can identify materials and ascertain their purity. ILNIRS analyses polymer melt by monitoring changes in near-infrared light which is shone through the melt during processing.


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In-line monitoring of polymer processing by Ramin Reshadat Download PDF EPUB FB2

In-line monitoring of polymer extrusion processes by NIR spectroscopy Article (PDF Available) in Journal of Near Infrared Spectroscopy 6(1) January with Reads How we measure 'reads'.

The application of near-infrared (NIR) spectroscopy to continuous monitoring of extrusion processes of polymers was demonstrated. NIR probes were adapted to the extruder outlet. The connection between probe and extruder was realized through a fiber-optic cable. The measurements utilized transmission or diffuse reflectance modes.

Quantitative analysis was carried out using the Cited by: Much has changed in the plastics industry since the publication of McKelvey's Polymer Processing book. However, today as inthe set-up and solution of processing problems is done using. Polymer degradation is a common problem in the extrusion process.

In this work, Raman spectroscopy, a robust, rapid, and non-destructive tool for in-line monitoring, was utilized to in-line monitor the degradation of polypropylene (PP) under multiple extrusions.

Raw spectra were pretreated by chemometrics methods to extract variations of spectra and eliminate : Xuemei Guo, Zenan Lin, Yingjun Wang, Zhangping He, Mengmeng Wang, Gang Jin. In-line melt monitoring can distinguish within specification color from out of specification color. Also, it can be used to detect pigment degradation and to determine the upper temperature thresholds for pigmented polymer by: 3.

As noted in Chapter 3, intelligent processing of structural polymer materials has benefited from the use of thermocouples to sense material (resin) temperature during the cure gh the thermocouples can be used noninvasively by inserting them into excess material areas (i.e., areas that will be later In-line monitoring of polymer processing book when fitting the cured part to an aircraft structure), they still require.

Polymer Processing: On-line Monitoring. P.D. Coates, in Encyclopedia of flow; essentially ‘‘real time’’ assessment is possible, depending on sampling, signal processing, and data processing requirements.

Current in-line devices are used for rheometric, optical (including colour and composition), dielectric, ultrasonic, near-infrared. Free Online Library: In-line monitoring and analysis of polymer melting behavior in an intermeshing counter-rotating twin-screw extruder by ultrasound waves.

by "Polymer Engineering and Science"; Engineering and manufacturing Science and technology, general Melting Evaluation Melting points Polyvinyl chloride Production processes Ultrasonic waves Usage Ultrasound. Polymer manufacturing processes can be divided into continuous processes and batch processes.

In continuous process where raw material is fed in continuously and the product flow appears continuously e.g.

extrusion, there is more efficient use of energy and it is easier to maintain a consistent quality. INTRODUCTION In the extrusion of pigmented polymers, color is normally measured off-line on selected product sample plaques.

Our research is directed at the development of an in-line color monitoring system: the color of the molten polymer is continuously measured directly in an extruder using a fiber-optic-assisted spectrometer. The field of on-line and in-line analysis of polymer processing has a significant growth because of increased demands on quality of polymeric products and reduction of costs by avoidance of polymers of insufficient quality.

Beside NIR further techniques are available. These methods differ in precision, speed, complexity, the amount of. A total of approximately six thousand images was obtained from the in-line monitoring of three different lots of low-density polyethylene during processing in a cm.

diameter single screw extruder. Polymerization Reactor Monitoring by In-line Raman Spectrometry A very clear demonstration of the use of Eq. (3) is the case of the emulsion homopolymerization in which the disappearance of monomer is easily detected by Raman spectroscopy of the reaction mixture and it is possible to quantify this.

Polyhydroxyalkanoates (PHAs) are biodegradable plastic-like materials with versatile properties. Plant oils are excellent carbon sources for a cost-effective PHA production, due to their high carbon content, large availability, and comparatively low prices. Additionally, efficient process development and control is required for competitive PHA production, which can be facilitated by on-line or.

systems convince in the plastics-processing industry due to their flexibility and performance. Applying them in extrusion and calender lines provides reliable measurement results in high precision and thus creates the basis for control - ling the production process and eventually the quality achieved.

Precision. the basic polymer to the testing of products. There is equal concern with tests used in research and tests used every day in the factory.

Despite the range of materials, products and type of test, there is a common bond between workers involved in, or concerned with, the testing of rubbers and plastics.

Polymer Testing provides a forum. Dielectric measurements were made on clay filled polyethylene-ethyl vinyl acetate (EVA) copolymer nanocomposites during processing by extrusion.

The results show that composites containing chemically treated clays display significant dielectric dispersions. selected sensor applications for structural monitoring and control Advanced sensors and actuators, together with exponential improvements in computer technology, are causing a surge of interest in the development of "intelligent" structures and equipment.

Fischer D, Bayer T, Eichhorn KJ, Otto M () In-line process monitoring on polymer melts by NIR-spectroscopy. Fresenius J Anal Chem (1)–77 CrossRef Google Scholar Fischer D, Müller J, Kummer S, Kretzschmar B () Real time monitoring of morphologic and mechanical properties of polymer nanocomposites during extrusion by near.

Real-time monitoring of the dielectric properties of polymer melts and filled polymer melts has been carried out during extrusion.

The measurements are obtained using a dielectric cell that is placed directly in line with the extruder machine. The dielectric cell consists of interdigitating electrodes that are deposited on the inside of a ceramic ring that is electrically insulated and.

Polymeric formulations for drug release prepared by Hot Melt Extrusion the quality of the final products. Rheological behavior of the polymer depends largely upon temperature, process history and pressure.

Rheological data obtained during an extrusion process can provide information on the macromolecular structure of the melt and its morphology.This first comprehensive overview of reactive extrusion technology for over a decade combines the views of contributors from both academia and industry who share their experiences and highlight possible applications and markets.

They also provide updated information on the underlying chemical and physical concepts, summarizing recent developments in terms of the material and machinery used.6 QUALITY CONTROL PROCEDURES Producer Personnel Management Representative whenever in-line blending with SBR polymer latex.

6) IDEM Legitimate Use Approval letter from the post- is an open format book with at least one page devoted to each day mixture is produced. The diary is kept on file for a minimum period of three years.