Asymmetric Miktoarm Star Polymers as Polyester Thermoplastic Elastomers
Abstract
A library of polyester-based A(BA')n asymmetric miktoarm star polymers was synthesized with A, A' = poly(l-lactide) (PLLA) as the semicrystalline hard blocks and B = poly(4-methylcaprolactone) (PMCL) as the soft segment using a grafting-through platform known as μSTAR. The synthetic versatility of μSTAR enabled a systematic investigation of architectural design parameters, in particular the number of BA' arms (n), while holding the A, A', and B block lengths constant. The value of n has a pronounced impact on the mechanical properties of these high-molecular-weight miktoarm materials. Tensile toughness increases with n, an effect likely related to bridging, as the modulus drops because the hard-block volume fraction decreases. Furthermore, these insights expand our understanding of architecture effects in sustainable thermoplastic elastomers.
- Publication Date:
- Research Org.:
- Univ. of California, Santa Barbara, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1971662
- Grant/Contract Number:
- SC0019001
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Macromolecules
- Additional Journal Information:
- Journal Volume: 55; Journal Issue: 12; Journal ID: ISSN 0024-9297
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Materials; Plastics; Star polymers; Stress; Testing and assessment
Citation Formats
Blankenship, Jacob R., Levi, Adam E., Goldfeld, David J., Self, Jeffrey L., Alizadeh, Nima, Chen, Duyu, Fredrickson, Glenn H., and Bates, Christopher M. Asymmetric Miktoarm Star Polymers as Polyester Thermoplastic Elastomers. United States: N. p., 2022.
Web. doi:10.1021/acs.macromol.2c00214.
Blankenship, Jacob R., Levi, Adam E., Goldfeld, David J., Self, Jeffrey L., Alizadeh, Nima, Chen, Duyu, Fredrickson, Glenn H., & Bates, Christopher M. Asymmetric Miktoarm Star Polymers as Polyester Thermoplastic Elastomers. United States. https://doi.org/10.1021/acs.macromol.2c00214
Blankenship, Jacob R., Levi, Adam E., Goldfeld, David J., Self, Jeffrey L., Alizadeh, Nima, Chen, Duyu, Fredrickson, Glenn H., and Bates, Christopher M. Fri .
"Asymmetric Miktoarm Star Polymers as Polyester Thermoplastic Elastomers". United States. https://doi.org/10.1021/acs.macromol.2c00214. https://www.osti.gov/servlets/purl/1971662.
@article{osti_1971662,
title = {Asymmetric Miktoarm Star Polymers as Polyester Thermoplastic Elastomers},
author = {Blankenship, Jacob R. and Levi, Adam E. and Goldfeld, David J. and Self, Jeffrey L. and Alizadeh, Nima and Chen, Duyu and Fredrickson, Glenn H. and Bates, Christopher M.},
abstractNote = {A library of polyester-based A(BA')n asymmetric miktoarm star polymers was synthesized with A, A' = poly(l-lactide) (PLLA) as the semicrystalline hard blocks and B = poly(4-methylcaprolactone) (PMCL) as the soft segment using a grafting-through platform known as μSTAR. The synthetic versatility of μSTAR enabled a systematic investigation of architectural design parameters, in particular the number of BA' arms (n), while holding the A, A', and B block lengths constant. The value of n has a pronounced impact on the mechanical properties of these high-molecular-weight miktoarm materials. Tensile toughness increases with n, an effect likely related to bridging, as the modulus drops because the hard-block volume fraction decreases. Furthermore, these insights expand our understanding of architecture effects in sustainable thermoplastic elastomers.},
doi = {10.1021/acs.macromol.2c00214},
journal = {Macromolecules},
number = 12,
volume = 55,
place = {United States},
year = {Fri Jun 10 00:00:00 EDT 2022},
month = {Fri Jun 10 00:00:00 EDT 2022}
}
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