Temperature Effect on Polymerization Kinetics of Poly Methyl Methacrylate (PMMA)
Temperature Effect on Polymerization Kinetics of Poly Methyl Methacrylate (PMMA)

Author: Noor Hariah Wahab

Publisher:

Published: 2013

Total Pages: 31

ISBN-13:

DOWNLOAD EBOOK

Polymerization is a process which is chemically combined of small molecules to produce a very large chain or network molecule, called a polymer. By the way, the small molecules may be alike, or they may represent of two, three, or more different compounds with different molecular weight. This research proposes is to study the effect of temperature on polymerization kinetics of methyl methacrylate (MMA). Thermal study on methyl methacrylate is important to explain the heat and mass transfer phenomena during polymerization reaction. The objective of this study is to determine the temperature effect on polymerization kinetics of methyl methacrylate (MMA) with initiator. Mass of methyl methacrylate as monomer will be fixed at 3miligrams and also mass of initiator which is azo-bisisobutyronitrile (AIBN) will constant at 2miligrams. These two components will put on the pan by micropipette. The pan will tightly seal and be put into the differential scanning calorimetry (DSC). Each of samples will run until five hours in different temperatures (35°C, 45°C, 55°C, 65°C and 75° C). Then the polymerization kinetics and heat released are analyzed using this differential scanning calorimetry (DSC). From the (DSC) the curves or data of temperature, time and heat released are obtained. From these result obtained, increasing the temperature will decrease the time of reaction taken. High temperature will increase the amount of heat low or heat release. As increase the temperature, the rate of reaction increase due to the increasing of collision frequency and produce more energy to start the reaction.

The Chemistry of Radical Polymerization
The Chemistry of Radical Polymerization

Author: Graeme Moad

Publisher: Elsevier

Published: 2006

Total Pages: 667

ISBN-13: 0080442889

DOWNLOAD EBOOK

This book commences with a general introduction outlining the basic concepts of radical polymerization. This is followed by a chapter on radical reactions that is intended to lay the theoretical ground-work for the succeeding chapters on initiation, propagation and termination.

Effect of Temperature on Kinetics of Bulk Polymerization of Methyl Acrylate
Effect of Temperature on Kinetics of Bulk Polymerization of Methyl Acrylate

Author: Fatin Azureen Zulkurnain

Publisher:

Published: 2014

Total Pages: 68

ISBN-13:

DOWNLOAD EBOOK

This research objective is to determine the effect of temperature on the kinetics of bulk polymerization of methyl acrylate. Because of previous research has mentioned that free radical polymerization is poorly controlled and results in high molecular weight, this research will be run at certain temperature which can be considered high but it should be lower than the boiling point of the monomer itself. The method used in this research is by using Differential Scanning Calorimetry (DSC). The DSC will measure the heat flow associated with polymerization as a function of time in a controlled atmosphere. Therefore, the change in the kinetics of polymerization based on temperature can be determined by using this equipment. The graph for heat flow versus time is recorded by DSC software until the reaction is completed. By referring to the graph it can be seen that the reaction rate of polymerization increase with the increase of temperature. As a conclusion, from this research, it can be seen that changing the temperature can affect polymerization kinetics of methyl acrylate.

Handbook of RAFT Polymerization
Handbook of RAFT Polymerization

Author: Christopher Barner-Kowollik

Publisher: John Wiley & Sons

Published: 2008-09-08

Total Pages: 556

ISBN-13: 3527622764

DOWNLOAD EBOOK

Spanning the entire field from fundamentals to applications in material science, this one-stop source is the first comprehensive reference for polymer, physical and surface chemists, materials scientists, chemical engineers, and those chemists working in industry. From the contents: * Introduction: Living Free Radical Polymerization and the RAFT Process * Fundamental Structure-Reactivity Correlations Governing the RAFT Process * Mechanism and Kinetics * The RAFT Process as a Kinetic Tool * Theory and Practice in Technical Applications * RAFT Polymerization in Bulk and Organic Solvents, as well as Homogeneous Aqueous Systems * Emulsion and Mini-Emulsion Polymerization * Complex Architecture Design * Macromolecular Design via the Interchange of Xanthates * Surface Modification * Stability and Physical Properties of RAFT Polymers * Novel Materials: From Drug Delivery to Opto-Electronics * Outlook and Future Developments

Temperature Effect on Polymerization Kinetics of Polystyrene
Temperature Effect on Polymerization Kinetics of Polystyrene

Author: Siti At Thahirah Hasanul Ridza

Publisher:

Published: 2013

Total Pages: 62

ISBN-13:

DOWNLOAD EBOOK

This research is to study temperature effect on polymerization kinetic of polystyrene. The purposes of this research are to study temperature effect on polymerization kinetics of polystyrene. The experiments for this research were conducted in bulk polymerization of styrene. In this experiment, the temperature will be changing and the value of initiator is constant. Firstly, 3mg of styrene and 2mg of azobisisobutyronitrile solution (in toluene) are placed into the pan. Then, the pan is put into the Differential Scanning Calorimetry at the required temperature. The graph for heat flow versus time is recorded by Differential Scanning Calorimetry software until the reaction is complete. By referring to the graph it can be seen that the reaction rate of polymerization increase with the increase of temperature. As a conclusion, from this research, it can be seen that changing the temperature can affect polymerization kinetic of styrene.

Solid State Polymerization
Solid State Polymerization

Author: Constantine D. Papaspyrides

Publisher: John Wiley & Sons

Published: 2009-04-27

Total Pages: 314

ISBN-13: 0470451823

DOWNLOAD EBOOK

The most current guide to solid state polymerization Solid State Polymerization (SSP)is an indispensable tool in the design, manufacture, and study of polymers, plastics, and fibers. SSP presents significant advantages over other polymerization techniques due to low operating temperatures, inexpensive equipment, and simple and environmentally sound procedures. Combining fundamentals of polymer science, chemistry, physical chemistry, and engineering, SSP also offers many research applications for a wide range of students and investigators. Gathering and filtering the latest literature on SSP, Solid Solid State Polymerization offers a unique, one-stop resource on this important process. With chapters contributed by leaders in the field, this text summarizes SSP, and provides essential coverage that includes: An introduction to SSP, with chemical and physical steps, apparatus, advantages, and parameters SSP physical chemistry and mechanisms Kinetic aspects of polyesters and polyamides SSP Catalysis in SSP processes Application of SSP under high pressure conditions in the laboratory Engineering aspects regarding process modeling and industrial application Recent developments and future possibilities Solid State Polymerization provides the most up-to-date coverage of this constantly developing field to academic and industry professionals, as well as graduate and postgraduate-level students in chemical engineering, materials science and engineering, polymer chemistry, polymer processing and polymer engineering.