Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Characterization of Combinatorial Polymer Blend Composition Gradients by FTIR Microspectroscopy



Naomi Eidelman, Carl G. Simon Jr.


A new FTIR technique was developed for characterizing thin polymer films used in combinatorial materials science. Fourier transform infrared microspectroscopy mapping technique was used to determine the composition of polymer blend gradients. Composition gradients were made from poly(L-lactic acid) (PLLA) and poly(D,L-lactic acid) (PDLLA) in the form of thin films (6 cm x2 cm) deposited on IR reflective substrates. Three composition gradient films were prepared and characterized. The results demonstrate the reproducibility and feasibility of a new, high-throughput approach for preparing and characterizing polymer composition gradients. The combination of composition gradient film technology and automated nondestructive FTIR microspectroscopy make it possible to rapidly and quantitatively characterize polymer composition gradients for use in combinatorial materials science.
Journal of Research (NIST JRES) -
109 No. 2


biomaterials, combinatorial materials science, combinatorial methods, FTIR microspectroscopy, high-throughput assay, low-e glass, poly(lactic acid), polymer blends


Eidelman, N. and Simon, C. (2004), Characterization of Combinatorial Polymer Blend Composition Gradients by FTIR Microspectroscopy, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed February 25, 2024)
Created March 1, 2004, Updated February 17, 2017