Work Item
ASTM WK87574
New Practice for Temperature-Resolved FTIR Technique to Characterize Polymeric Materials
1. Scope
Temperature-resolved FTIR technique is also referred as Thermal In-situ FTIR analysis method to study temperature-dependent behaviors of polymeric materials, such as phase transition, melting, crystallization, and glass transitions. Since FTIR has been widely used as fast and reliable chemical analysis for polymers and plastics, to extend its ability with temperature- controlled environment can be value-added approaches to reveal chemical structural changes at elevated temperatures in their applications. This method, used in conjunction with current standards for thermal analysis can provide a significant view into the structural changes inherent in mixed plastics and recycled plastics. Chemical reactions through polymerization, degradation, and structural transformation are often associated with temperature and many other environmental conditions. In most applications, material properties are gauged mostly by macro-scale features, such as mechanical, electrical, optical, and thermal properties, etc.
Keywords
crystallization; thermal degradation; structural change
Rationale
For polymeric compounds, micro-scale chemical information, such as breakage of bonds and reformation of new bonds to be responsible to property changes have not been investigated in popular publications. To develop the temperature resolved FTIR technique can fill in the knowledge to link chemical structural changes to property variations. This standard should address that gap. This standard can be used to evaluate those changes in a systematic way. Users will be anyone investigating polymer structure changes as it relates to polymer processing, failure analysis, and materials characterization.
The title and scope are in draft form and are under development within this ASTM Committee.
Work Item Status
Date Initiated: 08-21-2023
Technical Contact: Tuesday Kuykendall