Work

Modularly prepared segmented fluorinated silicones and their anomalous microstructure dependent flow behavior

Year: 2025

Type: article

Abstract: Octafluorocyclopentene was used as a coupling reagent by undergoing a series of efficient and regio-controlled addition-elimination reactions with eugenol and alkyldiols/bisphenols to prepare terminally unsaturated monomers. Structural characterization revealed these high molecular weight monomers can be obtained with high purity and in multi-gram quantities with minimal purification. The eugenolic-based monomers underwent Pt-catalyzed hydrosilylations with hydride-terminated polydimethylsilane oligomers to prepare a versatile pool of segmented fluorosilicones. Polymer characterization included molecular weight determination, calorimetric studies, thermo-gravimetric analysis, and rheology. Of particular interest as next-generation lubricants for in-space applications, these fluorosilicones possess adaptable structure-property relationships by nature of the segment substitution.

Source: RSC Advances

DOI: 10.1039/d5ra03087k

Authors: Analise C. Migliaccio, Nathan J. Weeks, Scott T. Iacono

Institution: United States Air Force Academy

Language: English

Topic: Silicone and Siloxane Chemistry

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,042

Funders: Defense Threat Reduction Agency, Air Force Office of Scientific Research, Air Force Research Laboratory