UCST-Type Thermoresponsive Polymers in Synthetic Lubricating Oil Polyalphaolefin (PAO)

Fu, Wenxin; Bai, Wei; Jiang, Sisi; Seymour, Bryan T.; Zhao, Bin

doi:10.1021/acs.macromol.7b02755

Title: UCST-Type Thermoresponsive Polymers in Synthetic Lubricating Oil Polyalphaolefin (PAO)

Journal Article · 20 February 2018 · Macromolecules

DOI: https://doi.org/10.1021/acs.macromol.7b02755 · OSTI ID:1430641

Fu, Wenxin ^[1]; Bai, Wei ^[1]; Jiang, Sisi ^[1]; Seymour, Bryan T. ^[1];

^[1]

Univ. of Tennessee, Knoxville, TN (United States). Department of Chemistry

Here, this article reports a family of UCST-type thermoresponsive polymers, poly(alkyl methacrylate)s with an appropriate alkyl pendant length, in an industrially important non-volatile organic liquid polyalphaolefin (PAO). The cloud point (CP) can be readily tuned over a wide temperature range by changing the alkyl pendant length; at a concentration of 1 wt% and similar polymer molecular weights, the CP varies linearly with the (average) number of carbon atoms in the alkyl pendant. PAO solutions of ABA triblock copolymers, composed of a PAO-philic middle block and thermoresponsive outer blocks with appropriate block lengths, undergo thermoreversible sol-gel transitions at sufficiently high concentrations. The discovery of thermoresponsive polymers in PAO makes it possible to explore new applications by utilizing PAO’s unique characteristics such as thermal stability, non-volatility, superior lubrication properties, etc. Lastly, two examples are presented: thermoresponsive physical gels for control of optical transmittance and injectable gel lubricants.

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Research Organization:: Univ. of Tennessee, Knoxville, TN (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: EE0006925

OSTI ID:: 1430641

Journal Information:: Macromolecules, Vol. 51, Issue 5; ISSN 0024-9297

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 17 works

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