Year: 2017
Type: article
Abstract: Emerging medical devices which employ shape memory polymers (SMPs) require precise measurements of the glass transition temperature (Tg) to ensure highly controlled shape recovery kinetics. Conventional techniques like differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) have limitations that prevent utilization for certain devices, including limited accuracy and the need for sacrificial samples. In this report, we employ an approach based on Brillouin spectroscopy to probe the glass transition of SMPs rapidly, remotely, and nondestructively. Further, we compare the Tg obtained from Brillouin scattering with DMA- and DSC-measured Tg to demonstrate the accuracy of Brillouin scattering for this application. We conclude that Brillouin spectroscopy is an accurate technique for obtaining the glass transition temperature of SMPs, aligning closely with the most common laboratory standards while providing a rapid, remote, and nondestructive method for the analysis of unique polymeric medical devices.
Source: Applied Physics Letters
DOI: 10.1063/1.4999803
Institution: Texas A&M University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
Awards: G1527163402, TAS::57 3600::TAS "(MURI-15) NANOELECTROPULSE-INDUCED ELECTROMECHANICAL SIGNALING AND CONTROL OF BIOLOGICAL SYSTEMS", MRI: Development of a microfluidic flow cytometer for high-throughput noninvasive single-cell physio-chemical analysis, Shedding new light on cell-matrix interactions: instrumentation development for non-invasive, real-time microscopic elasticity imaging, Shape Memory Polymer Embolic Foams for Treating Cerebrovascular Aneurysms, Facilitating remote chemical sensing with random Raman lasing
OpenAlex ID: W2771834566