Academic literature on the topic 'Terpolymerisation'
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Journal articles on the topic "Terpolymerisation"
Srour, M. H., Vincent G. Gomes, and I. S. Altarawneh. "Optimal operating strategies for emulsion terpolymerisation." Chemical Engineering Science 63, no. 17 (September 2008): 4257–68. http://dx.doi.org/10.1016/j.ces.2008.05.043.
Full textSrour, M. H., Vincent G. Gomes, I. S. Altarawneh, and J. A. Romagnoli. "Online model-based control of an emulsion terpolymerisation process." Chemical Engineering Science 64, no. 9 (May 2009): 2076–87. http://dx.doi.org/10.1016/j.ces.2009.01.044.
Full textAkperov, O. H., R. E. Mamedova, and E. O. Akperov. "Radical terpolymerisation of heptene-1 with maleic anhydride and styrene." Materials Research Innovations 12, no. 4 (December 2008): 210–12. http://dx.doi.org/10.1179/143307508x362855.
Full textOthman, N., G. Févotte, and T. F. McKenna. "Nonlinear State Estimation and Control of a Semibatch Terpolymerisation Reactor." IFAC Proceedings Volumes 33, no. 10 (June 2000): 515–20. http://dx.doi.org/10.1016/s1474-6670(17)38592-0.
Full textAkperov, E. O. "Kinetics of radical terpolymerisation of allylacetate with styrene and maleic anhydride." Materials Research Innovations 11, no. 2 (June 2007): 71–73. http://dx.doi.org/10.1179/143307507x196572.
Full textEl-Hamouly, S. H. "Azeotropy in terpolymerisation reactions of glycidylmethacrylate with alkyl acrylates and acrylonitrile." Polymer International 32, no. 4 (1993): 385–93. http://dx.doi.org/10.1002/pi.4990320409.
Full textAlamir, Mazen, Nida Sheibat Othman, and Sami Othman. "On the use of non-linear receding-horizon observers in batch terpolymerisation processes." International Journal of Modelling, Identification and Control 4, no. 1 (2008): 79. http://dx.doi.org/10.1504/ijmic.2008.021002.
Full textGarcía Suárez, Eduardo J., Cyril Godard, Aurora Ruiz, and Carmen Claver. "Alternating and Non-Alternating Pd-Catalysed Co- and Terpolymerisation of Carbon Monoxide and Alkenes." European Journal of Inorganic Chemistry 2007, no. 18 (June 2007): 2582–93. http://dx.doi.org/10.1002/ejic.200700024.
Full textTsuda, Tetsuo, and Fusahiro Tsugawa. "Cobalt-catalysed cycloaddition terpolymerisation of carbon monoxide with diynes and norbornadiene to form poly(enone)s." Chemical Communications, no. 8 (1996): 907. http://dx.doi.org/10.1039/cc9960000907.
Full textSrour, M. H., V. G. Gomes, and J. A. Romagnoli. "Online inferential product attribute estimation for optimal operation of emulsion terpolymerisation: Application to styrene/MMA/MA." Chemical Engineering Science 62, no. 16 (August 2007): 4420–38. http://dx.doi.org/10.1016/j.ces.2007.04.046.
Full textDissertations / Theses on the topic "Terpolymerisation"
Srour, Mourtada H. "ADVANCED MODELLING OF EMULSION TERPOLYMERISATION FOR ONLINE OPTIMISATION AND CONTROL." Thesis, The University of Sydney, 2008. http://hdl.handle.net/2123/3688.
Full textSrour, Mourtada H. "ADVANCED MODELLING OF EMULSION TERPOLYMERISATION FOR ONLINE OPTIMISATION AND CONTROL." University of Sydney, 2008. http://hdl.handle.net/2123/3688.
Full textPolymer manufacturing is a major worldwide industry, attracting the attention of numerous industrial units and research institutes. Increasing demands on polymer quality, process safety and cost reduction are the main reasons for growing interest in the design and control of emulsion polymerisation. Emulsion polymerisation process implemented with free radical polymerisation has significant advantages over other processes, such as the production of polymer of higher molecular weights at high conversion rates, easier temperature control due to the low viscosity of the reaction media, high degree of selectivity and more friendly to environment due to the use of an aqueous medium. It allows for the production of particles with specially-tailored properties, including size, composition, morphology, and molecular weights. Introducing two or more different monomers to the polymerisation process (named multi-polymerisation) can lead to the synthesis of an almost unlimited number of new polymers types. Emulsion polymers are products by process, meaning that the manner in which the polymerisation is carried out is perhaps more important than the raw materials in determining the form of the final product. This highlights the significance of the systematic approach in online process control which requires thorough understanding of the process phenomena as a prerequisite for development of a mathematical description of the process as the model. It is thus evident and based on research observations that process control for emulsion terpolymerisation is a particularly difficult task because of the lack of validated models and the lack of online measurements of most of polymer properties of interest. Therefore, a well validated model is crucial for optimising and controlling the emulsion terpolymerisation operations allowing for design of the polymer product properties. In this study, a framework for process design and control of emulsion terpolymerisation reactors was developed. This framework consisted of three consecutive stages, dynamic modelling of the process, optimising the process for finding the optimal operating strategies and final online controlling the obtained optimal trajectories through multivariable constrained model predictive control. Within this framework, a comprehensive dynamic model was developed. Then a test case of emulsion terpolymerisation of styrene, methyl methacrylate and methyl acrylate was investigated on state of the art facilities for predicting, optimising and control end-use product properties including global and individual conversions, terpolymer composition, the average particle diameter and concentration, glass transition temperature, molecular weight distribution, the number- and weight-average molecular weights and particle size distribution. The resulting model was then exploited to understand emulsion terpolymerisation behavior and to undertake model-based optimization to readily develop optimal feeding recipes. The model equations include diffusion-controlled kinetics at high monomer conversions, where transition from a ‘zero-one’ to a ‘pseudo-bulk’ regime occurs. Transport equations are used to describe the system transients for batch and semi-batch processes. The particle evolution is described by population balance equations which comprise of a set of integro-partial differential and nonlinear algebraic equations. Backward finite difference approximation method is used to discretise the population equation and convert them from partial differential equations to ordinary differential equations. The model equations were solved using the advanced simulation environment of the gPROMS package. The dynamic model was then used to determine optimal control policies for emulsion terpolymerisation in a semi-batch reactor using the multiobjective dynamic optimisation method. The approach used allows the implementation of constrained optimisation procedures for systems described by complex mathematical models describing the operation of emulsion terpolymerisation reactors. The control vector parameterisation approach was adopted in this work. Styrene monomer feed rate, MMA monomer feed rate, MA monomer feed rate, surfactant feed rate, initiator feed rate and the temperature of reactor were used as the manipulating variables to produce terpolymers of desired composition, molecular weight distribution (MWD) and particle size distribution (PSD). The particle size polydispersity index (PSPI), molecular weight polydispersity index (MWPI) and the overall terpolymer composition ratios were incorporated as the objective functions to optimise the PSD, MWD and terpolymer composition, respectively. The optimised operational policies were successively validated with experiments via one stirred tank polymerisation reactor. Due to the lack of online measurements of key process product attributes for emulsion terpolymerisation, an inferential calorimetric soft sensor was developed based on temperature measurements. The calorimetric soft sensor obtains online measurements of reactor temperature, jacket inlet and outlet temperatures helped estimate the rate of polymerisation. The model includes the mass and energy balance equations over the reactor and its peripherals. Energy balance equations include the heat of reaction, internal and external heat transfer effects, as well as external heat losses. An online multivariable constrained model predictive control was formulated and implemented for online control of the emulsion terpolymerisation process. To achieve this implementation, a novel generic multilayer control architecture for real-time implementation of optimal control policies for particulate processes was developed. This strategy implements the dynamic model for the emulsion terpolymerisation as a real-time soft sensor which is incorporated within the implemented MPC. The methodology was successively validated using six case studies within the on-line control of terpolymerisation reactors. The cases were online controlled the composition of terpolymers, PSD and Mn with specific constraints for the operation conversion and particle average radius. An advanced Supervisory Control Architecture named ROBAS was used in this work. It provides a completely automated architecture allowing for the real time advanced supervisory monitoring and control of complex systems. The real time control application strategy was developed within MATLAB, Simulink, gPROMS and Excel Microsoft softwares and implemented on line through ROBAS Architecture. The manipulated variables are measured using on-line measurements connected to the DCS system through Honeywell. These measurements were sent to MATLAB and then to the dynamic model in gPROMS through an excel spread-sheet interface. Then the dynamic model used them to estimate the controlled variables of the MPC. The estimated values of the controlled variables obtained from the dynamic model, were then sent to the Simulink and fed through the DCS system to the MPC developed in MATLAB. The MPC would then calculate optimal trajectories, which are then sent as set point signals through the DCS system to the regulatory controller. The MPC formulation was found to be robust and handles disturbances to the process. The result showed that the online multivariable constrained MPC controller was able to control the desired composition and Mn as specified set points with great accuracy. The MPC algorithm succeeded under constrained conditions, in driving the PSD to the desired target. Although some offset was observed with a certain degree of model mismatch, the experimental results agreed well with predictions.
Weingarten, Ulrich. "Homo-, Co- und Terpolymerisation von Ethen, Propen und Dien mit Metallocen-, MAO-Katalysatoren." [S.l. : s.n.], 2000. http://www.sub.uni-hamburg.de/disse/373/Diss.pdf.
Full textLovrić, Ruz̆ica [Verfasser]. "High-Pressure Synthesis and Characterisation of Ethene Co- and Terpolymerisation with Different Monomers / Ruzica Lovric." Aachen : Shaker, 2017. http://d-nb.info/1159836825/34.
Full textDeron, Michel. "Apport de l'automatisation et de l'optimisation aux polymeres en emulsion : application a la terpolymerisation de l'acetate de vinyle et des acrylates de butyle et d'ethyl-2 hexyle." Paris 6, 1987. http://www.theses.fr/1987PA066338.
Full textWeingarten, Ulrich [Verfasser]. "Homo-, Co- und Terpolymerisation von Ethen, Propen und Dien mit Metallocen-, MAO-Katalysatoren / vorgelegt von Ulrich Weingarten." 2000. http://d-nb.info/961707569/34.
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