Delrin (polyoxymethylene) is a tough self-lubricating polymer used in gear wheels. It is made by polymerizing formaldehyde in the presence of an acid catalyst. a. Propose a mechanism for formation of a segment of the polymer. b. Is Delrin a chain-growth polymer or a step-growth polymer?

Delrin (polyoxymethylene) is a tough self-lubricating polymer used in gear wheels. It is made by polymerizing formaldehyde in the presence of an acid catalyst. a. Propose a mechanism for formation of a segment of the polymer. b. Is Delrin a chain-growth polymer or a step-growth polymer?

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter2: Atoms And Molecules

Section: Chapter Questions

Problem 2.70PAE: 2.70 Why do you think an inhibitor molecule is needed to induce the polymerization of ethylene?

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Types of Polymers on the basis of Method of Preparation

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Definition Definition Chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

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(a) Show how poly(propylene oxide) can be synthesized via anionic ring-opening polymerization. (b) Draw the mechanism for the initiation and first two propagation steps.
Delrin (polyoxymethylene) is a tough self-lubricating polymer used in gear wheels. It is made by polymerizing formaldehyde in the presence of an acidcatalyst. Is Delrin a chain-growth polymer or a step-growth polymer?
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