Brian C. Smith

November 27, 2023

The author dispels the notion that inorganics do not have mid-infrared spectra by providing an overview of the general characteristics of their infrared spectra.

September 01, 2023

An examination of halogenated compounds and some common halogenated polymers is explored here.

June 23, 2023

The structure and infrared spectra of polyurethanes and polymeric amides are similar, but there are several key differences worth calling attention to.

May 01, 2023

Slip agents are commonly used amide small molecules that lubricate the molds in injection molding processes. By studying the spectra of a primary amide, we can see how they can contaminate the spectra of polymeric materials.

March 01, 2023

We study the spectra of organic nitrogen polymers with a particular focus on polyamides.

January 01, 2023

We study the spectrum of polymethyl methacrylate (PMMA)—otherwise known as plexiglass—and the spectra of PMMA mixtures and copolymers.

December 01, 2022

We continue our survey of the spectra of carbonyl-containing polymers by looking at cellulose acetate and the economically important polycarbonate Lexan.

October 01, 2022

An exploration of polyethylene terephthalate (PET), one of the most important polymers, is presented.

August 01, 2022

We continue our survey of the infrared (IR) spectra of polymers with a look at the spectra of polymers that contain carbonyl or C=O bonds. Our long-term goal is to examine the spectra of polymers that contain ketone, carboxylic acid, ester, and carbonate linkages. Studying these spectra is vital, because these molecules are important economically and are ubiquitous in society.

May 01, 2022

An examination of polymers with C-O bonds, focusing on the spectra of polyvinyl alcohol, cellulose, starch, and copolymers.