(Phys.org) -- When chemists look at a drinking glass filled with water and a few ice cubes, it's not clear to them whether the glass is more like the water or the ice. Glass is one of civilization's ...

Polymers are used for myriad applications today, and perhaps the most important property that dictates which polymer is chosen for a given application is its "glass transition temperature." Many ...

Changes in a liquid as it becomes a glass are related to repulsion between atoms as they are crowded together. Although scientists have long believed the poorly understood glass transition must have ...

While the familiar melting and freezing transitions of water occur at well-defined temperatures, the transitions in polymers are surprisingly different At this time of year it always becomes obvious ...

The complex heat capacity for the glass transition region of the NR/SBR blend is shown in Figure 1. Figure 1. ADSC of an NR/SBR blend In the traditional DSC measurement curve, enthalpy relaxation is ...

This series of articles is designed to help molders understand how a few analytical tools can help diagnose a part failure. Michael Sepe is our analyst and author. He is the technical director at ...

Changes in temperature can have an enormous impact on the performance properties of epoxies and other thermosetting polymer systems. Prior to curing, an epoxy consists of a resin and a curing agent.

The characterization of amorphous or partially amorphous pharmaceutical materials has been of particular interest in recent years. The existence of amorphous materials can generally be attributed to ...

Polystyrene has a glass transition temperature of about 100 C -- at room temperature it behaves like a solid material. But as its temperature approaches the glass transition temperature, polystyrene’s ...