High‐Throughput Screening of Mechanical Properties on Temperature‐Gradient Polyurethaneurea Libraries

Abstract

Combinatorial libraries of segmented polyurethaneurea with gradients in curing temperature were prepared and characterized using a novel high‐throughput mechanical instrument. Stress/strain profiles were taken at different temperature positions on the libraries, and a structure/property relationship between microstructure and mechanical properties was established by correlating the measured strength and strain at break to high‐throughput AFM and FT‐IR measurements on the same library. These results demonstrate the feasibility of rapid and accurate screening of mechanical properties, and their correlation to structure, by using gradient combinatorial polymer libraries. Impact energy/thickness and elongation at break versus cure T for a T‐gradient SPUU library.magnified imageImpact energy/thickness and elongation at break versus cure T for a T‐gradient SPUU library.

Combinatorial Methods, Automated Synthesis and High‐Throughput Screening in Polymer Research: The Evolution Continues

“…al evaluated combinatorial libraries of segmented poly(urethane urea) (SPUU) elastomers with gradients in curing temperature utilizing a high-throughput impact and stain apparatus. [32] Investigated were SPUUs consisting of toluene-diisocyanate end-capped poly(tetramethylene glycol) prepolymer and trimethylene glycol dip-aminobenzoate curative at curing temperatures ranging from 70 to 130 8C. Impact results of these libraries could be .…”

High‐Throughput Screening of the Influence of Thermal Treatment on the Mechanical Properties of Semicrystalline Polymers: A Case Study for iPP

“…However, in order to accurately determine the mechanical properties of polymers a large number of tests must be carried out, which require a large amount of material and when linked with the various structural features may be also very time consuming. The advent of the combinatorial testing concepts [1][2][3] has successfully addressed similar problems in the pharmaceutical, genetic engineering, and chemistry research. Hence, it seems most appropriate to take advantage of the method and use it in screening materials properties in terms of processing conditions.…”

Current Status of Combinatorial and High‐Throughput Methods for Discovering New Materials and Catalysts

“…Schubert et al [24] and Meredith et al [25] utilized scanning probe microscopy (SPM) and atomic force microscopy (AFM) as methodologies of high-throughput screening, because the microstructures of polymers characterized uisng microscopic tools are related to the mechanical properties of the polymers [25].…”