Relevant bibliographies by topics / Twin-screw extrusion

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Twin-screw extrusion'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 July 2024

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Journal articles on the topic "Twin-screw extrusion"

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McGuire, P. A., S. Blackburn, and E. M. Holt. "Twin-Screw Extrusion Modelling." Advances in Science and Technology 45 (October 2006): 436–41. http://dx.doi.org/10.4028/www.scientific.net/ast.45.436.

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A mathematical model has been derived to describe the pressure drop along the conveying and reverse sections of a partly full, fully intermeshing co-rotating twin-screw extruder. The model extends previous work on single screw extrusion, whereby the Benbow-Bridgwater model of paste rheology is combined with a force balance on a plug of paste. Experiments to verify the model have been carried out using a laboratory scale twin-screw extruder fitted with a hydraulic feeder and a modified barrel section allowing the collection of pressure data at numerous points along the extruder. Initial results suggested that the model was able to correctly predict the trends observed but underestimated the absolute values of the pressure. This was attributed to a change in the rheology of the paste due to viscous heating effects. Further experimental work was carried out to determine the relationship between the rheological parameters and temperature; this allowed a temperature correction to be made to the initial data after which the agreement with the predictions was greatly improved.
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Lewandowski, Adrian, and Krzysztof Wilczyński. "Modeling of Twin Screw Extrusion of Polymeric Materials." Polymers 14, no. 2 (January 10, 2022): 274. http://dx.doi.org/10.3390/polym14020274.

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An issue of modeling of twin-screw extrusion of polymeric materials is reviewed. The paper is written in honor of Prof. James L. White who was a pioneer in studying this issue. A global approach to process modeling is presented which includes solid polymer transport, polymer plasticating, and the flow of molten polymer. The methodology of CFD modeling of twin-screw extrusion is presented as well as the examples of this modeling which show the details of the process. Optimization and scaling of twin-screw extrusion are also covered. And finally, the future prospects of developments and research of twin screw extrusion is discussed.
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Liu, Cheng-Ying, Shota Mikoshiba, Yutaka Kobayashi, Akira Ishigami, Daisuke Yorifuji, Shin-ichiro Tanifuji, and Hiroshi Ito. "Experimental Investigation and Numerical Simulation of a Self-Wiping Corotating Parallel Octa-Screw Extruder." Polymers 14, no. 6 (March 16, 2022): 1201. http://dx.doi.org/10.3390/polym14061201.

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An octa-screw extruder (OSE) is equipment for pelletizing, blending, and mixing polymers and composites. In this study, the degree of resin filling, residence time distribution (RTD) of molten resin, and temperature profile in the octa-screw extruder were evaluated both experimentally and numerically. An intermeshing corotating parallel octa-screw kneading extruder was used for the experiments. For the comparison study, the results obtained from this extruder were compared with the twin-screw extruder. High-density polyethylene was selected as the material for extrusion. Meanwhile, a numerical code, based on a 2.5 D finite element method derived from the Hele–Shaw flow model, was developed to simulate the octa-screw extrusion process. The empirical outcomes suggest that octa-screw extrusion exhibited a narrower RTD of the molten resin compared with the twin-screw extrusion, suggesting better extrudate quality. The octa-screw extrusion also showed a lower temperature profile than twin-screw extrusion. The results of the simulation were also found to be in good agreement with experimental measurements. Experimental and numerical investigations of an OSE enable detailed comprehension and visualization of resin distribution in the entire length of the OSE, thus providing advantages in terms of process optimization.
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Ji, Ho Suk, Geunyeop Park, and Hyun Wook Jung. "Rheological Properties and Melt Spinning Application of Controlled-Rheology Polypropylenes via Pilot-Scale Reactive Extrusion." Polymers 14, no. 15 (August 8, 2022): 3226. http://dx.doi.org/10.3390/polym14153226.

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Based on pilot-scale twin-screw reactive extrusion, the structural and rheological properties of controlled-rheology polypropylenes (CR-PPs) are investigated, where the effects of peroxide content and extrusion conditions such as screw configuration, extrusion temperature, and screw speed are prioritized. The active chain cleavage reaction by a small peroxide content of less than 600 ppm inside the extruder gradually increases the melt index and narrows the molecular weight distribution of CR-PPs, thereby affording favorable properties that are applicable to the fiber spinning process. The mechanical properties of CR-PPs are slightly degraded owing to the generation of unsaturated chain ends during the reactive extrusion, which suppresses crystal growth. Under all extrusion conditions, the chain scission and thermal degradation of polypropylene samples occur actively in the harsh twin-screw extruder compared with those in the mild twin-screw extruder. Finally, it is confirmed that CR-PPs can be suitably applied to the melt-spinning process for staple fiber production, thereby guaranteeing a more stable spinning process window against draw resonance instability.
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Unlu, Emine, and James F. Faller. "RTD in twin-screw food extrusion." Journal of Food Engineering 53, no. 2 (June 2002): 115–31. http://dx.doi.org/10.1016/s0260-8774(01)00148-0.

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ISOBE, Seiichiro. "Extrusion Cooking with Twin Screw Extruder." Journal of the Society of Mechanical Engineers 92, no. 846 (1989): 435–37. http://dx.doi.org/10.1299/jsmemag.92.846_435.

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Bur, Anthony J., and F. Mitchell Gallant. "Fluorescence monitoring of twin screw extrusion." Polymer Engineering and Science 31, no. 19 (October 1991): 1365–71. http://dx.doi.org/10.1002/pen.760311902.

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Michaeli, W., A. Greefenstein, and U. Berghaus. "Twin-Screw extruders for reactive extrusion." Polymer Engineering and Science 35, no. 19 (October 1995): 1485–504. http://dx.doi.org/10.1002/pen.760351902.

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Sasimowski, Emil, and Łukasz Majewski. "Effect of the Intensive Plasticizing Zone Design on the Effectiveness of Corotating Twin-Screw Extrusion." Advances in Polymer Technology 2019 (April 16, 2019): 1–11. http://dx.doi.org/10.1155/2019/8518341.

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The aim of this study was to investigate the effect of a new intensive plasticizing and mixing screw zone design on the effectiveness of the corotating twin-screw extrusion process for talc-filled polypropylene. The study determined the effect of the angle between the trilobe kneading elements forming the intensive plasticizing and mixing zone of the screws, the screw rotational speed, and the polypropylene/talc filling ratio on the characteristics of the extrusion process in a corotating twin-screw extruder EHP-2x20. The paper describes the experimental design and obtained results as well as the developed empirical models for selected variables of the extrusion process.
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Li, Xiao Ping, Zhi Sen Zhang, Hui Jin Xiao, Qiang Zeng, and Xiao An Zhang. "Corn-Rice Powder Extrusion Key Parameters in Twin-Screw Extrusion Process." Advanced Materials Research 815 (October 2013): 329–32. http://dx.doi.org/10.4028/www.scientific.net/amr.815.329.

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To find the inner relations of extrusion key parameters, 2-factor and 3-level orthogonal experiments are carried out on the twin-screw extruder with the corn-rice powder as the materials. The factors are: screw rate and feed rate; the indices are: inner pressure, die outlet temperature and generator current. The results are analyzed by single index regression method, the results show that the screw rate has the significant influence on the variables of barrel inner pressure, die outlet temperature and generator current, while the feed rate only impact significantly on the barrel inner pressure and generator current. After the response analysis of the original variables, the desired experimental conditions are obtained. The parameters should be: screw rate=150rpm, feed rate=14rpm.
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Dissertations / Theses on the topic "Twin-screw extrusion"

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Cassinath, Zen. "Development of twin screw Rheo extrusion technology." Thesis, Brunel University, 2013. http://bura.brunel.ac.uk/handle/2438/7608.

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Twin Screw Rheo Extrusion (TSRE) is a novel semisolid extrusion process developed at BCAST for producing simple profiles such as rods and wires of light alloys directly from melts with refined microstructures and improved mechanical properties. The process represents a shortened manufacturing route with great savings in investment, energy consumption and operation space. Research was carried out to investigate the feasibility of processing magnesium and aluminium alloys, to obtain the operations for the optimized microstructures and mechanical properties of the final product and to understand the mechanisms governing the evolution of microstructures. Experiments were conducted using an AZ91D magnesium alloy and several aluminium alloys on two specially made twin screw rheo extrusion machines and a range of conditions were tested. Results showed that the TSRE process was feasible for the AZ91D magnesium alloy and aluminium alloys, although modifications were required for processing aluminium alloys as the twin screw material used was found to react with aluminium. Analysis revealed that the extruded samples of both alloys had a uniform fine microstructure in both transversel and longitudinal directions and liquid segregation was limited, due to the application of intensive shearing during slurry making and extrusion. Low extrusion temperature was found to refine the structure and suppress the formation of the eutectic. The eutectic was easily dissolved upon heat treatment resulting in reasonable mechanical properties. Numerical analysis on thermal management was carried out and the results showed that a steady state thermal profile with a temperature gradient between the slurry feeding point and extrusion die could be established, promoting nucleation and preventing the formed solid particles from extensive growth during extrusion, which was confirmed by microstructural observations.
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Edi-Soetaredjo, Felycia. "Numerical simulation of twin-screw extrusion of starch based material /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18502.pdf.

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Winstone, Gemma. "Production of catalyst supports by twin screw extrusion of pastes." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/5706/.

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The production of ceramic catalyst supports is commonly performed by the extrusion of a paste. The rheological properties of the paste as it passes through the extruder have a strong influence on the extrudate properties such as porosity and strength, which in turn affect the catalytic performance of the final product. An assessment of the effect of acid type and strength and powder type on the rheological properties of concentrated boehmite slurries has been made. In particular, evidence of gel formation is looked for, and the surface chemistry is examined using zeta potential measurements. Further understanding of the observed rheological changes is obtained by performing nuclear magnetic resonance studies and cryogenic microscopy. The effect of powder properties and acid type and strength on the saturation states of a formulation has been examined using mixer torque rheometry. The prediction of saturation states from bulk density measurements is discussed. The predictive capability of the mixer torque rheometer with regards extrusion formulations is investigated. The effect of acid type and strength on successful extrusion formulations and extrudate properties is discussed.
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Lewis, Todd M. "Carbon Nanotube Composites Prepared by Ultrasonically Assisted Twin Screw Extrusion." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1405330978.

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Xu, Suxuan. "Fibrous soy protein meat analog from low moisture twin-screw extrusion." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/6035.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 16, 2008) Includes bibliographical references.
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Rongzhi, Huang. "MULTILAYER CO-EXTRUSION AND TWIN-SCREW COMPOUNDING OF POLYMERIC ELASTOMER SYSTEMS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1404864078.

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Stasiek, Andrzej. "Badania procesu współbieżnego dwuślimakowego wytłaczania modyfikowanego polipropylenu przy zmiennej geometrii ślimaków." Rozprawa doktorska, Uniwersytet Technologiczno-Przyrodniczy w Bydgoszczy, 2015. http://dlibra.utp.edu.pl/Content/886.

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Celem pracy było badanie i opis wybranych cech konstrukcyjnych ślimaków wytłaczarki dwuślimakowej współbieżnej oraz parametrów technologicznych procesu na właściwości kompozytów PP/talk wytworzonych w tym procesie
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Strandberg, Marcus. "Determination and implementation of polymer parameters into simulations of the twin-screw extrusion process." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Maskinteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-27184.

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This thesis was conducted in cooperation with a Swedish company that develops and manufactures plastic compounds. An increasing need for identifying material properties is seen within the industry in order to predict the outcome of the extrusion process by using simulations. The purpose of this study was to expand a material database with the results obtained through various measurements of the material parameters in order to enable simulations. The numerical descriptions would be analyzed and validated in relation to the obtained results and conducted methods to enable implementation of the material data into the industry. In order to fulfill the purpose, scientific methods was applied by chosen literature studies, research approaches and experimental research. Machine tests were conducted to collect relevant output data that was compared with the results obtained during the simulation process where the experimentally determined material parameters were applied in a material database. Typical injection molding qualities of PET, POM, PC/ABS, SAN and PA66 has been investigated by conducting measurement methods described by standards of the melt flow rate, specific heats, viscosity, crystallinity and melt- and glass transition temperatures. With exception of the viscosity, the material parameters are considered to have high external validity and high reliability and can be implemented into the industry. The bulk- and melt density was determined by adapted methods that need further investigations. The external validity is reduced until these methods and measurements have been validated. The determined material parameters proved to be able to generate reliable simulation results that indicate of how the extrusion process will turn out based on the output values investigated. The data obtained through machine tests was compared with the results that were achieved through simulations and deviated at most 10.9% from the actual outcomes. The viscosity is considered to be the main factor that affects the differences of the output data between the machine tests and the simulation results.
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Ng, Thian Hong. "Twin screw extrusion pre-treatment of wheat straw for biofuel and lignin biorefinery applications." Thesis, Brunel University, 2013. http://bura.brunel.ac.uk/handle/2438/7417.

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Pre-treatment of wheat straw(lignocellulosic) biomass is a crucial step as it has direct impact on the subsequent yield of enzymatic saccharification and alcohol fermentation processes in the production of biofuel. Twin screw extrusion is a highly feasible pretreatment method and has been received great interest in the recent year pre-treatment studies. Twin screw extrusion is a continuous process, where the biomass feedstock can be subjected to a combination of simultaneous physical, thermal and chemical treatments. Steam explosion is a batch process and is the most commonly used method for lignocellulosic pre-treatment. In the initial stage of this study, the yield of glucose obtained from enzymatic saccharification for both methods (extrusion and steam explosion) were compared to identify the most effective pre-treatment approach. Effectiveness of the conventional steam explosion pre-treatment was used as benchmark for the directions of development of effective extrusion fractionation for wheat straw. In subsequent study, the impact of physical operating parameters (moisture, barrel temperature, compaction, screw speed and size reduction before extrusion) over twin screw extrusion with and without NaOH were studied. Low temperature (50°C) and increased moisture extrusion were preferred extrusion conditions. Yield of glucose can be improved by addition of NaOH (0.04g / g straw) and barrel temperature profile optimisation. Post extrusion washing was recommended. Findings from FTIR and TGA help to understand the chemical and structural changes took place in the pre-treatment and can be correlated with the glucose yield at the end of enzymatic hydrolysis. Characterisation analysis was extended to FT-NIR, morphology, crystallinity and specific surface area analysis to analyse the structural changes of lignocellulose biomass in extrusion pre-treatment and correlation with glucose yield. Chemometric analysis was used to statistically process large amounts of spectral data. The PCA scores plots showed good cluster segregation of the samples and were thus able to distinguish the effects of different pre-treatment conditions. The PLS regression models for both FTIR and FT-NIR showed good statistical regression and predictive ability correlated to the glucose yield. For the lignin ultilisation study, crude lignin was recovered from black liquor and fractionated with solvents. Lignin and the fractions were characterised with solvent solubility, SEC, UV, FTIR, 1H and 13C NMR and evaluated for the antioxidant activity with AAI ranged from 0.3 to 2.4. Reason for the low performance was proposed and experiment was extended to the intended application performance screening. Lignin application study was further extended to assess the feasibility of using lignin as an antioxidant in carboxylated acrilonitrile-butadiene rubber, XNBR glove. Evaluation involved physical observation, mechanical properties and thermal analysis – DSC-OIT after incorporation of lignin into XNBR glove. Lignin antioxidant performance was compared with current chemical antioxidant in used in industry. A part from antioxidant behaviour, lignin was also found can enhance the softness of XNBR film after accelerated heat aging.
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Likhar, Lokesh. "The production of a lyotropic liquid crystal coated powder precursor through twin screw extrusion." Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/6352.

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The twin screw extrusion technique has been explored to produce lyotropic liquid crystal coated powder precursor by exploiting Pluronic F127 thermoreversible gelation property to get powder precursor without granular aggregates or with less compacted granular aggregates. The highly soluble chlorpheniramine maleate loaded in Pluronic F127 solution coated MCC particles prepared through twin screw extrusion was examined to produce the cubic phase (gel) for the development of controlled release formulation and for coating of very fine particles which cannot be achieved by traditional bead coaters. Controlled release formulations are beneficial in reducing the frequency of administration of highly soluble drugs having short half life and also to address the problem of polypharmacy in old age patients by reduction of dosage frequency. An unusual refrigerated temperature (5 C) profile for twin screw extrusion was selected based on the complex viscoelastic flow behaviour of Pluronic F127 solution which was found to be highly temperature sensitive. The Pluronic F127 solution was found to be Newtonian in flow and less viscoelastic at low temperature, such that low temperature (5¿C) conditions were found to be suitable for mixing and coating the MCC particles to avoid compacted aggregates. At higher temperatures (35-40¿C) Pluronic F127 solution exhibited shear thinning and prominent viscoelasticity, properties which were exploited to force CPM containing Pluronic F127 solution to stick over the MCC surface. This was achieved by elevating the temperature of the last zone of the extrusion barrel. It was found that to avoid compacted aggregates the MCC must be five times the weight of the Pluronic F127 solution and processed at a screw speed of 400 RPM or above at refrigerated temperature. Processing was not found to be smooth at ambient temperature with frictional heat and high torque generation due to significant compaction of coated particles which can be attributed to the elastic behaviour of Pluronic F127 solution at temperatures between ambient to typical body temperature. PLM images confirmed the cubic phase formation (gel) by Pluronic F127 coating which was found to be thick with maximum Pluronic F127 concentration (25%). SEM images showed smoothing of surface topography, and stretching and elongation of MCC fibres after extrusion which is indicative of coating through extrusion processing. Plastic deformation was observed for the lower Pluronic F127 concentration and higher MCC proportions. There was a significant decrease in work done for cohesion by the powder flow analyser observed in the batches with more aggregates compared with batches with least aggregates. A regression analysis study on factorial design batches was conducted to investigate the significant independent variables and their impact on dependent variables for example % torque, geometric mean diameter and work done for cohesion, and to quantitatively evaluate them. From the regression analysis data it was found that the coefficient of determination for all three dependent variables was in the range of 55-62%. The pharmaceutical performance of the prepared coated LLC precursor through twin screw extrusion in terms of controlled release was found to be very disappointing. Almost 100% chlorpheniramine maleate was released within 10-15mins, defined as providing burst release. The MDSC method was developed within this work to detect Pluronic F127 solution cubic phase formation. The MDSC method was developed to consider sample size, effect of heating and cooling, sample heat capacity, and the parameters for highest sensitivity which can be followed by sample accurately without the phase lag to produce accurate repeatable results.
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Books on the topic "Twin-screw extrusion"

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White, James Lindsay. Twin screw extrusion: Technology and principles. 2nd ed. Munich: Hanser Publications, 2010.

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Twin screw extrusion: Technology and principles. Munich: Hanser Publishers, 1991.

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White, J. L. Twin screw extrusion: Technology and principles. New York, N.Y: Hanser Publishers, 1990.

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White, James L. Twin screw extrusion: Technology and principles. Munich: Hanser Publishers, 1990.

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Twin-screw extrusion scales down for pharma and nanotech. [New York]: Knovel, 2011.

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1940-, Hayakawa Isao, ed. Food processing by ultra high pressure twin-screw extrusion. Lancaster, Pa: Technomic Pub. Co., 1992.

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Michael, Bierdel, ed. Co-rotating twin-screw extruders: Fundamentals, technology, and applications. Munich [Germany]: Carl Hanser Publishers, 2008.

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Orchard, Stephen Frederick. Reactive extrusion: The use of a co-rotating, intermeshing twin-screw extruder to perform catalytic hydrogenation of soya bean oil using immobilised and slurry catalysts. Birmingham: University of Birmingham, 1998.

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Co-Rotating Twin-Screw Extruders: Applications. Hanser Publications, 2020.

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Book chapters on the topic "Twin-screw extrusion"

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Rauwendaal, Chris. "Twin Screw Extruders." In Polymer Extrusion, 697–761. München: Carl Hanser Verlag GmbH & Co. KG, 2014. http://dx.doi.org/10.3139/9781569905395.010.

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Rauwendaal, Chris. "Twin Screw Extruders." In Polymer Extrusion, 697–761. München, Germany: Carl Hanser Verlag GmbH & Co. KG, 2014. http://dx.doi.org/10.1007/978-1-56990-539-5_10.

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Lafleur, Pierre G., and Bruno Vergnes. "Co-Rotating Twin-Screw Extrusion." In Polymer Extrusion, 109–210. Chichester, UK: John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118827123.ch4.

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McGuire, P. A., S. Blackburn, and E. M. Holt. "Twin-Screw Extrusion Modelling." In Advances in Science and Technology, 436–41. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908158-01-x.436.

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Berzin, Françoise, and Bruno Vergnes. "Modeling of Twin Screw Reactive Extrusion." In Reactive Extrusion, 37–70. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527801541.ch3.

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Chung, Chan I. "Physical Description of Twin-Screw Extruders." In Extrusion of Polymers, 449–63. München: Carl Hanser Verlag GmbH & Co. KG, 2019. http://dx.doi.org/10.3139/9781569907382.010.

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Chung, Chan I. "Physical Description of Twin-Screw Extruders." In Extrusion of Polymers, 449–63. München, Germany: Carl Hanser Verlag GmbH & Co. KG, 2019. http://dx.doi.org/10.1007/978-1-56990-738-2_10.

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Kimura, Yoshitaka, Amit K. Chaudhary, and Mark A. Spalding. "Twin-Screw Extrusion of Polyethylene." In Handbook of Industrial Polyethylene and Technology, 357–80. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119159797.ch11.

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Agassant, Jean-François, Pierre Avenas, Pierre J. Carreau, Bruno Vergnes, and Michel Vincent. "Twin-Screw Extrusion and Applications." In Polymer Processing, 433–519. München: Carl Hanser Verlag GmbH & Co. KG, 2017. http://dx.doi.org/10.3139/9781569906064.006.

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Agassant, Jean-François, Pierre Avenas, Michel Vincent, Bruno Vergnes, and Pierre J. Carreau. "Twin-Screw Extrusion and Applications." In Polymer Processing, 433–519. München, Germany: Carl Hanser Verlag GmbH & Co. KG, 2017. http://dx.doi.org/10.1007/978-1-56990-606-4_7.

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Conference papers on the topic "Twin-screw extrusion"

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S (or initial) Kannadhason, Kurt A Rosentrater, K Muthukumarappan, and Michael L Brown. "Twin Screw Extrusion of DDGS-Based Aquaculture Feeds." In 2008 Providence, Rhode Island, June 29 - July 2, 2008. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2008. http://dx.doi.org/10.13031/2013.24757.

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Stephan, Schuschnigg, Battisti Markus, Winkler-Ebner Joachim, Friesenbichler Walter, and Holzer Clemens. "Optimization of twin screw extrusion using CFD for polymer/nanoclay composites." In PROCEEDINGS OF THE REGIONAL CONFERENCE GRAZ 2015 – POLYMER PROCESSING SOCIETY PPS: Conference Papers. Author(s), 2016. http://dx.doi.org/10.1063/1.4965472.

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"Effect of twin-screw extrusion processing of rice bran expansion rate." In 2016 ASABE International Meeting. American Society of Agricultural and Biological Engineers, 2016. http://dx.doi.org/10.13031/aim.20162458619.

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Tanjina, A., B. Camila, G. Wilhelmus, K. Rijul, M. Adrian, R. Ryan, and T. Jitendra. "Magnetic and Mechanical Characterization of Additive Manufactured Strontium Ferrite/Polyamide 12 Composites Using Twin-Screw and Single-Screw Extrusion." In SAMPE neXus 2021. NA SAMPE, 2021. http://dx.doi.org/10.33599/nasampe/s.21.0492.

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Andersen, Paul. "Fundamentals of twin-screw extrusion polymer melting: Common pitfalls and how to avoid them." In PROCEEDINGS OF PPS-30: The 30th International Conference of the Polymer Processing Society – Conference Papers. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4918387.

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BHAGANAGAR, SIDDHARTH, PIAS KUMAR BISWAS, MANGILAL AGARWAL, and HAMID DALIR. "ENHANCING POLYLACTIC ACID (PLA) FOR 3D PRINTING WITH CELLULOSE NANOFIBERS VIA TWIN SCREW MELT EXTRUSION." In Proceedings for the American Society for Composites-Thirty Eighth Technical Conference. Destech Publications, Inc., 2023. http://dx.doi.org/10.12783/asc38/36537.

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In this study, cellulose nanofiber (CNF) reinforced polylactic acid (PLA) filaments were made via melt extrusion for 3D printing applications. The use of CNF reinforcement may enhance the PLA's mechanical attributes, making it a better material for a variety of 3D printing applications. In order to create the nanocomposites, a master batch of PLA and CNFs was premixed, and the CNFs were subsequently diluted throughout the extrusion process to final concentrations of 1, 3, and 5 wt%. The dilution was done to evaluate how the morphological and mechanical characteristics of the composites would be affected by different CNF concentrations. The findings demonstrated that adding 3 wt. % CNF greatly improved the mechanical characteristics of the PLA composites. In particular, the flexural strength rose by 60.2%, the compressive strength rose by 62.7%, and the tensile strength rose by 77.7%. These results show that the melt extrusion of PLA filaments reinforced with CNF is a practical method for creating nanocomposites with enhanced mechanical characteristics for 3D printing applications. The study's conclusion emphasizes how CNF reinforcement may be used to enhance the mechanical characteristics of PLA for 3D printing applications. The findings may be useful for researchers and businesses in the 3D printing and materials science fields, and they may also aid in the creation of more sophisticated and environmentally friendly 3D printing materials.
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Parisa Fallahi, Kurt A Rosentrater, Kasiviswanathan Muthukumarappan, and Mehmet Tulbek. "Effects of Conditioner Steam, Extruder Water and Screw Speed on Physical Properties of DDGS-Based Extrudates in Twin-Screw Extrusion." In 2011 Louisville, Kentucky, August 7 - August 10, 2011. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2011. http://dx.doi.org/10.13031/2013.37353.

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10.12783/asc38/36548 ANURAKPARADORN, KANAT, and ALAN TAUB. "A COMPARATIVE STUDY OF THE EFFECT OF COMPOUNDING METHODS AND PROCESSING OF PLA/GNPS ON THE MICROMORPHOLOGY AND ELECTRICAL CONDUCTIVITY." In Proceedings for the American Society for Composites-Thirty Eighth Technical Conference. Destech Publications, Inc., 2023. http://dx.doi.org/10.12783/asc38/36548.

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In this work, the effects of different compounding and processing techniques on the DC electrical conductivity and density of polylactic acid (PLA)/ graphene nanoplatelets (GNPs) composites were studied. It is found from the study that compounding by solution mixing via an ultrasonication technique can provide slightly higher DC electrical conductivity after compression molding than mixing through a twin-screw extruder due to better dispersion quality. In addition, a composite pellet from twin screw extrusion showed a slight increase in DC electrical conductivity and anisotropy when processed by filament extrusion due to the shear alignment of GNPs during the extrusion. The fused deposition modeling (FDM) process yields high anisotropy because the crystallization along the printing path allows gaps and polymer coating between the extruded lines and layers. It was found that the 7.5 wt% GNPs composites exhibited the best properties because it provides the best dispersion quality to meet the percolation threshold. Furthermore, the micromorphology of each sample was also studied to observe the dispersion and porosity inside the composite provided by each fabrication technique. This study can be used as a reference for compounding and processing techniques.
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Chen, Jinnan, and Yinghan Cao. "Simulation of 3D flow field of RPVC in twin-screw extrusion under wall slip conditions." In 2012 International Bhurban Conference on Applied Sciences and Technology (IBCAST). IEEE, 2012. http://dx.doi.org/10.1109/ibcast.2012.6177540.

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Kalyon, Dilhan M., Alexandros D. Gotsis, Costas G. Gogos, and Christos Tsenoglou. "Simulation Of The Mixing Of Highly Filled Suspensions In The Co-Rotating Twin Screw Extrusion Process." In 1988 Los Angeles Symposium--O-E/LASE '88, edited by Joseph Flanagan. SPIE, 1988. http://dx.doi.org/10.1117/12.943756.

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