Synthesis and Properties of Poly[isobornyl methacrylate (IBMA)-b-butadiene (BD)-b-IBMA] Copolymers: New Thermoplastic Elastomers of a Large Service Temperature Range
Abstract
Anionic polymerization of isobornyl methacrylate (IBMA) has been studied in THF and toluene in a temperature range from −78 to +40 °C by using (1,1-diphenyl-3,3-dimethylbutyl)lithium (DDBLi) as an initiator in the presence of LiCl or not. Effect of solvent and polymerization temperature on tacticity has been studied. The reactivity of IBMA is comparable to tert -butyl methacrylate (tBMA), and polymers of a very narrow molecular weight distribution (<1.10) have been synthesized at room temperature, in THF, in the presence of LiCl. The T g of PIBMA is found to vary from 170 to 206 °C with chain tacticity. Poly(isobornyl methacrylate) (PIBMA)−polybutadiene (PBD)−PIBMA triblock copolymers have been synthesized by using the m -diisopropenylbenzene ( m -DIB)/ tert -butyllithium ( t -BuLi) diadduct as an initiator. The PBD midblock has been prepared in a cyclohexane/diethyl ether (100/6, v/v) mixture at room temperature. THF has been added [cyclohexane/diethyl ether/THF (100/6/100, v/v/v)] before the IBMA polymerization takes place at either −78 or +25 °C. Triblock copolymers of a very narrow molecular weight distribution (1.10) have been synthesized even at 25 °C, and no gel formation has been observed. These new triblock copolymers exhibit high tensile strength (30 MPa), high ultimate elongation (1000%), and high upper service temperature (160 °C).
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The presence of bulky substituents can lead to an elevation of the glass transition temperature and a concomitant reduction of the service temperature of the elastomer.
“The presence of bulky substituents, however, can also lead to an elevation of the glass transition temperature and a concomitant reduction of the service temperature of the elastomer. 77”
From Aliphatic Polyester Block Polymer Design (2016) · cites this paper as [77]
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Fetters, L. J., & Morton, M. (1969) · Macromolecules · doi:10.1021/ma60011a002 · Cited by 161 · see citing works
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Aliphatic Polyester Block Polymer Design
Schneiderman, D. K., & Hillmyer, M. A. (2016) · Macromolecules · doi:10.1021/acs.macromol.6b00211 · Cited by 290 · see citing works
Wang, W., Schlegel, R., White, B. T., Williams, K., Voyloy, D., Steren, C. A., Goodwin, A., Coughlin, E. B., Gido, S., Beiner, M., et al. (2016) · Macromolecules · doi:10.1021/acs.macromol.5b02642 · Cited by 49 · see citing works
- Authors
- Yu, J. M., Dubois, P., & Jérôme, R.
- Affiliations
- University of Liège (BE)
- University of Liège, Center for Education and Research on Macromolecules, Sart-Tilman, B6, 4000 Liège, Belgium
- Venue
- Macromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 1996-01-01
- Volume
- 29
- Issue
- 23
- Pages
- 7316-7322
- ISSN
- 0024-9297 (ISSN-L)
- 1520-5835
- OpenAlex
- W2046078233
- Cited by
- 58
- References
- 1
- Citations by year
- 2024: 6 · 2023: 8 · 2022: 2 · 2021: 2 · 2020: 4 · 2019: 2 · 2018: 1 · 2017: 6 · 2016: 3 · 2015: 2 · 2014: 2 · 2013: 1 · 2012: 2
- FWCI
- 0.60
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Macromolecules (publishedVersion)
- ORBi (University of Liège) (submittedVersion)
- Topics
- Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
- Physical Sciences › Materials Science › Materials Chemistry › Block Copolymer Self-Assembly
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer Synthesis and Characterization
- Keywords
- isobornyl methacrylate, polybutadiene, triblock copolymers, thermoplastic elastomers, anionic polymerization, tacticity, glass transition temperature, molecular weight distribution, solvent effects, polymerization temperature, tensile strength, elongation at break, service temperature
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