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

doi:10.1021/acs.macromol.7b02755

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

Abstract

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.

Authors:

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

^[1]

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

Publication Date:: 2018-02-20

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

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

OSTI Identifier:: 1430641

Grant/Contract Number:: EE0006925

Resource Type:: Accepted Manuscript

Journal Name:: Macromolecules

Additional Journal Information:: Journal Volume: 51; Journal Issue: 5; Journal ID: ISSN 0024-9297

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; PAO; gel lubricant

Citation Formats


                    Fu, Wenxin, Bai, Wei, Jiang, Sisi, Seymour, Bryan T., and Zhao, Bin. UCST-Type Thermoresponsive Polymers in Synthetic Lubricating Oil Polyalphaolefin (PAO).  United States: N. p., 2018. 
        Web.  doi:10.1021/acs.macromol.7b02755.

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                    Fu, Wenxin, Bai, Wei, Jiang, Sisi, Seymour, Bryan T., & Zhao, Bin. UCST-Type Thermoresponsive Polymers in Synthetic Lubricating Oil Polyalphaolefin (PAO).  United States.  doi:10.1021/acs.macromol.7b02755.

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                    Fu, Wenxin, Bai, Wei, Jiang, Sisi, Seymour, Bryan T., and Zhao, Bin. Tue .  
        "UCST-Type Thermoresponsive Polymers in Synthetic Lubricating Oil Polyalphaolefin (PAO)".  United States.  doi:10.1021/acs.macromol.7b02755.  https://www.osti.gov/servlets/purl/1430641.

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@article{osti_1430641,

  title        = {UCST-Type Thermoresponsive Polymers in Synthetic Lubricating Oil Polyalphaolefin (PAO)},

  author       = {Fu, Wenxin and Bai, Wei and Jiang, Sisi and Seymour, Bryan T. and Zhao, Bin},

  abstractNote = {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.},

  doi          = {10.1021/acs.macromol.7b02755},

  journal      = {Macromolecules},

  number       = 5,

  volume       = 51,

  place        = {United States},

  year         = {2018},

  month        = {2}

}

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Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

DOI: 10.1021/acs.macromol.7b02755

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Cited by: 1 work

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Figures / Tables:

Scheme 1: (A) Molecular Structures of Homopolymers of Alkyl Methacrylates with Linear and Branched Alkyl Pendants as well as Random Copolymers. (B) Synthesis of ABA Triblock Copolymers Composed of a PAO-philic Middle Block and Two UCST-type Thermoresponsive Outer Blocks by Two-Step RAFT Polymerizations.

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Works referencing / citing this record:

Rheological Study on the Thermoreversible Gelation of Stereo-Controlled Poly(N-Isopropylacrylamide) in an Imidazolium Ionic Liquid
journal, May 2019

Yan, Zhi-Chao; Biswas, Chandra Sekhar; Stadler, Florian J.
Polymers, Vol. 11, Issue 5
DOI: 10.3390/polym11050783

Rheological Study on the Thermoreversible Gelation of Stereo-Controlled Poly(N-Isopropylacrylamide) in an Imidazolium Ionic Liquid
journal, May 2019

Yan, Zhi-Chao; Biswas, Chandra Sekhar; Stadler, Florian J.
Polymers, Vol. 11, Issue 5
DOI: 10.3390/polym11050783

Zwitterionic poly(sulfobetaine methacrylate)s in water: from upper critical solution temperature (UCST) to lower critical solution temperature (LCST) with increasing length of one alkyl substituent on the nitrogen atom
journal, January 2018

Wang, Ning; Seymour, Bryan T.; Lewoczko, Evan M.
Polymer Chemistry, Vol. 9, Issue 43
DOI: 10.1039/c8py01211c

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.

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Similar Records

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

Abstract

Citation Formats

Figures / Tables:

Rheological Study on the Thermoreversible Gelation of Stereo-Controlled Poly(N-Isopropylacrylamide) in an Imidazolium Ionic Liquid journal, May 2019

Rheological Study on the Thermoreversible Gelation of Stereo-Controlled Poly(N-Isopropylacrylamide) in an Imidazolium Ionic Liquid journal, May 2019

Zwitterionic poly(sulfobetaine methacrylate)s in water: from upper critical solution temperature (UCST) to lower critical solution temperature (LCST) with increasing length of one alkyl substituent on the nitrogen atom journal, January 2018

Rheological Study on the Thermoreversible Gelation of Stereo-Controlled Poly(N-Isopropylacrylamide) in an Imidazolium Ionic Liquid
journal, May 2019

Rheological Study on the Thermoreversible Gelation of Stereo-Controlled Poly(N-Isopropylacrylamide) in an Imidazolium Ionic Liquid
journal, May 2019

Zwitterionic poly(sulfobetaine methacrylate)s in water: from upper critical solution temperature (UCST) to lower critical solution temperature (LCST) with increasing length of one alkyl substituent on the nitrogen atom
journal, January 2018