Polymer melt rheology aims to understand and quantify the viscous and elastic properties of a polymer so that the process parameters are aligned with the material’s melt properties and vice-versa.
This paper utilizes a single run DSC experiment and analysis of the crystallization data using the Avrami equation to obtain a cursory but useful comparison of crystallization characteristics of different colored polypropylene marker caps purchased from an office supply store.
Differential scanning calorimetry (DSC) is an effective technique for rapidly evaluating the oxidative stability of polymers and enables fiber producers to determine optimum formulations.
Oxidative degradation of polymers is an exothermic process (releases heat) and is detectable by differential scanning calorimetry (DSC). Furthermore, DSC evaluation of polyethylene at elevated temperatures in the presence of oxygen is an effective method for accelerating the onset of degradation so that longer term (shelf life) properties can be predicted and/or compared.
The purpose of this paper is to provide a universally acceptable definition of “Melting” and then illustrate that loss of crystalline structure in many materials can be caused by numerous chemical processes other than thermodynamic or “True Melting”.
The nitinol shape-memory alloy solid-solid transition is studied using differential scanning calorimetry (DSC), which reveals the reversible and hysteretic nature of this transition. This can be used to provide information on the composition of the nitinol alloy. It also serves as a tool to detect the existence of, and changes in, the intermediate R-phase.
In this note, the thermal properties of nylon gears with increasing mass fractions of recycled material are evaluated.
The purpose of this paper is to explain and illustrate a systematic thermal analysis approach (DSC, MDSC®, and TGA) for detecting drug-excipient incompatibility and then optionally exploring the rate of reaction (kinetics) and reaction mechanism (chemistry).
In this apps note, the properties of PLA are studied under various controlled humidity and temperature conditions.
In this work, the thermal degradation process of nylon 66 was studied using TGA-MS, TGA-FTIR and TGA-GC/MS in inert gas environments. These techniques together can provide a lot of insights of the thermal degradation process and its off-gas products.
In this Applications note, we demonstrate using TGA to precisely control the degree of degradation to be < 5wt% and characterize the impact of degrees of degradation on polymer thermal properties.
Thermogravimetric Analysis (TGA) provides a method for accelerating the lifetime testing of polymers so that short term experiments can be used to predict in-use lifetime.