Download or read book On line Particle Size Measurement and Mathematical Modelling of Continuous Poly vinylacetate Emulsion Polymerization Microforma written by Paul D. Gossen and published by . This book was released on 1988 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Simulation of Particle Size Distribution in Continuous Emulsion Polymerization Through a Modified Population Balance Approach written by Ying-Yuh Lu and published by . This book was released on 1984 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed mathematical model for particle size distribution in continuous emulsion polymerization of styrene and vinyl acetate is proposed on the basis of the population balance in the presence of several kinetic and mass transfer processes. This study is limited to the Smith-Ewart case II, which assumes instantaneous free radical termination within polymer particles. Radical desorption mechanism from polymer particles is included in the model and the desorption rate is formulated from the diffusion theory which suggests that the rate coefficient should be inversely proportional to the surface area of polymer particles.

Download or read book Experimental Analysis Mathematical Modeling and Control of Particle Size Distribution in Semi batch Emulsion Polymerization written by Charles D. Immanuel and published by . This book was released on 2002 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Modeling and Sensitivity Analysis of Continuous Stirred Tank Vinyl Acetate Emulsion Polymerization written by Chan Hong Lee and published by . This book was released on 1987 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamics and Stability of Emulsion Polymerization Reactors written by John Carroll Prindle and published by . This book was released on 1989 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 23 European Symposium on Computer Aided Process Engineering written by Alireza Hosseini and published by Elsevier Inc. Chapters. This book was released on 2013-06-10 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper, a new control strategy that employs a mid-course correction to control the particle size distribution in emulsion polymerization is developed. In this approach, online and infrequent measurements are used to obtain the states of the system at the mid-course of the process. Then an optimization is performed to obtain the optimal trajectory of the input from the mid-course up to the end of the process. For this optimization, a hybrid model is used. This hybrid model consists of the Fokker-Planck particle size distribution model of emulsion polymerization and a data-driven component which corrects the predictions of the Fokker-Planck model based upon the estimated states of the system at the mid-course of the process.

Download or read book Polymer Particle Size Distributions in Continuous Emulsion Polymerization written by James Otto Funderburk and published by . This book was released on 1969 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Dynamics of Continuous Emulsion Polymerization Reactors written by Francis Joseph Schork and published by . This book was released on 1981 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Modelling of Continuous Emulsion Polymerization Reactor written by George C. Chu and published by . This book was released on 1980 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling Validation and Time Optimal Control of Particle Size Distribution in Emulsion Polymerization written by Mehdi Rajabi-Hamane and published by . This book was released on 2007 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Emulsion Polymerization written by Irja Piirma and published by . This book was released on 1982 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molecular Weight and Particle Size Distribution Prediction in a Continuous Stirred Tank Emulsion Polymerization Reactors written by Paul Stephen Inglish and published by . This book was released on 1973 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Model for Continuous Emulsion Polymerization of Vinyl Chloride and Its Steady state Solution written by Tomi Heiskanen and published by . This book was released on 1985 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Approaches in Modeling and Mid Course Correction Control of the Particle Size Distribution in Emulsion Polymerization written by Alireza Hosseini and published by . This book was released on 2014 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Balance Modeling of Emulsion Polymerization Reactors written by Hugo Vale and published by . This book was released on 2004 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is a contribution to the development of population balance models of emulsion polymerization and, more particularly, to the modeling of particle formation and particle size distribution (PSD) in vinyl chloride emulsion polymerization. The rst part of the work is dedicated to the acquisition of experimental data. Ab initio polymerizations were done to obtain reliable data regarding the dependence of the particle number on the concentration of surfactant, as well as to analyze the effect of the initiator concentration, stirring rate, and monomer-to-water ratio upon the particle number and the polymerization kinetics. In addition, seeded polymerizations were carried out at different concentrations of seed latex and emulsifier in order to quantify the influence of these factors on the onset and extent of secondary particle formation. Moreover, the adsorption isotherms of SDS and SDBS on poly (vinyl chloride) latex particles were determined. The second part of the manuscript focuses on the development of the population balance model. A special feature of the model proposed in this work is the computation of the coupled radical number and particle size distributions by the zero-one-two population balance equations. Overall, the examples presented show that the model can capture the tendencies observed in the polymerizations with physically reasonable values of the unknown/ adjustable parameters. With respect to particle formation, it was seen that including the possibility of particle nucleation (homogeneous and micellar) by exited radicals helps to explain the high particle numbers observed and the fact that the initiator concentration has a negligible effect on the particle number. Moreover, it was demonstrated that particle coagulation must be taken into account in order to obtain plausible PSDs and to avoid the use of abnormally low values of the efficiency of radical entry into micelles. In the third and last part, two novel numerical methods for the solution of population balances of interest to emulsion polymerization systems are presented and discussed.

Download or read book Process to Establish Specific Particle Size Distributions in Continuous Emulsion Polymerization written by R. Kakuschke and published by . This book was released on 1984 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reduced Order Methodologies for the Control of Particle Size Distribution in Emulsion Polymerization written by Mustafa Tekin Dokucu and published by ProQuest. This book was released on 2007 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emulsion polymerization has significant advantages over bulk and solution polymerization processes. These advantages result mostly from the multiphase and compartmentalized nature of the emulsion polymerization, delivering a high versatility to product qualities but adding to the complexity of the process. The control of the full particle-size distribution (PSD) in emulsion polymerization is vital for industrial applications where the target distributions are usually complex and/or multimodal. Despite the strong need, control of the full PSD presents a challenging task mainly due to the complexity of emulsion polymerization and the lack of adequate on-line measurement instrumentation. In this work, in-batch and batch-to-batch control strategies are developed for the regulation of the full PSD in semibatch emulsion copolymerization of Vinyl Acetate/Butyl Acrylate with nonionic surfactants and a redox initiator pair. These strategies are also applicable for regulation of distributions in other particulate systems governed by population balances.