Chemical – Paul Wu's Blog

Particle size analysis

Two techniques are used for particle size analysis for a slurry: Dynamic Light Scattering (DLS) and Laser Diffraction.

Measurement of powder’s specific surface area by BET method

Specific surface area, surface area divided by weight, can be measured by BET theory, Developed by Brunner, Emmett, Teller.

Instrumental Gas Analysis

Instrumental Gas Analysis (IGA) is to accurately measure the Carbon (C), Sulfur (S), Oxygen (O), Nitrogen (N), and Hydrogen (H) content in solids, e.g. metals and ceramics.

ICP Analysis

ICP analysis is an element analysis method; it includes ICP-OES and ICP-MS.

Study the curing reaction of silicone release agent through FTIR

In PSA industry, release liner is one of the key components. The main functions of release liner are to provide protection of the adhesive layer during storage and transportation, and ensure a residue-free removal from the protected adhesive layer without damaging or contaminating it.

Silicone FTIR

The paper, titled with Characterization of Surface Treatments of Cork Stoppers by FTIR-ATR and published in J. Agric. Food Chem. 2006,54, 4932-4936, proposed an analytical method for identification of the presence of surface treatments in cork stoppers. The information about the FTIR bands for silicone is quite useful.

FTIR

Molecular bonds can be considered as stiff springs which can be bent or stretched. The vibration (bending and stretching) energy lies in the infrared (IR) range. Therefore, through the interaction between IR incident beam and molecules in samples to be tested, through transmission or reflection, molecular bonds information can be extracted from the absorption spectra to obtain their molecular structures.

Category: Chemical