Mediaspace scheduled maintenance: Aug 25, 2026 07:00 - 12:00 AM. During this time, videos will be temporarily unavailable. Check status updates.

Lecture

Polymerization Kinetics

In course

CH-310: Dynamics and kinetics

The course covers the principles of chemical kinetics, including differential rate laws, derivation of exact and approximate integral rate laws for common elementary and composite reactions, fundamentals of collision and transition state theories, and appl ...

Description

This lecture covers the kinetics of polymerization reactions, including initiation, propagation, and termination steps. It discusses the concept of chain length, degree of polymerization, and the role of various factors in controlling the polymerization process. The instructor explains mutual termination, disproportionation, and chain transfer mechanisms in detail.

Instructor

Ulrich Lorenz

Official source

Ontological neighbourhood

Chemistry

Organic chemistry: Polymer chemistry

Related concepts (32)

Radical polymerization

In polymer chemistry, free-radical polymerization (FRP) is a method of polymerization by which a polymer forms by the successive addition of free-radical building blocks (repeat units). Free radicals can be formed by a number of different mechanisms, usually involving separate initiator molecules. Following its generation, the initiating free radical adds (nonradical) monomer units, thereby growing the polymer chain. Free-radical polymerization is a key synthesis route for obtaining a wide variety of different polymers and materials composites.

Polymerization

In polymer chemistry, polymerization (American English), or polymerisation (British English), is a process of reacting monomer molecules together in a chemical reaction to form polymer chains or three-dimensional networks. There are many forms of polymerization and different systems exist to categorize them. In chemical compounds, polymerization can occur via a variety of reaction mechanisms that vary in complexity due to the functional groups present in the reactants and their inherent steric effects.

Anionic addition polymerization

In polymer chemistry, anionic addition polymerization is a form of chain-growth polymerization or addition polymerization that involves the polymerization of monomers initiated with anions. The type of reaction has many manifestations, but traditionally vinyl monomers are used. Often anionic polymerization involves living polymerizations, which allows control of structure and composition. As early as 1936, Karl Ziegler proposed that anionic polymerization of styrene and butadiene by consecutive addition of monomer to an alkyl lithium initiator occurred without chain transfer or termination.

Polymer

A polymer (ˈpɒlᵻmər; Greek poly-, "many" + -mer, "part") is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that are fundamental to biological structure and function.

Type system

In computer programming, a type system is a logical system comprising a set of rules that assigns a property called a type (for example, integer, floating point, string) to every "term" (a word, phrase, or other set of symbols). Usually the terms are various constructs of a computer program, such as variables, expressions, functions, or modules. A type system dictates the operations that can be performed on a term. For variables, the type system determines the allowed values of that term.

Related lectures (55)

Chain Polymerisation: Mechanism and Kinetics

Explores the mechanism and kinetics of chain polymerisation, focusing on inhibitors and competitive inhibition in enzyme reactions.

Collision Kinetics: Theory and Applications

Covers the theory and applications of collision kinetics in understanding molecular interactions.

Polymer Synthesis: Basics and Techniques

Explores polymer synthesis basics, including step and radical chain polymerization, molecular weight control, copolymerization, and crosslinked polymers for microengineering.

Cationic Polymerization: Synthetic Rubber

Explores cationic polymerization for synthetic rubber production, emphasizing initiation, propagation, and termination steps.

Inclusion of Fermented Foods in Food Guides