Side-Chain Length and Dispersity in ROMP Polymers with Pore-Generating Side Chains for Gas Separations
Name
jacsau.2c00219.pdf
Description
Published version
Size
2.45 MB
Format
Adobe PDF
Checksum (MD5)
a60fcbe54a38bc620214aabc0dda3b79
Author(s)
Benedetti, Francesco M
Wu, You-Chi Mason
Lin, Sharon
He, Yuan
Flear, Erica
Storme, Kayla R
Liu, Chao
Zhao, Yanchuan
Swager, Timothy M
Smith, Zachary P
Date Issued
July 25, 2022
Journal
JACS Au
Publisher
American Chemical Society (ACS)
Citation
Benedetti, Francesco M, Wu, You-Chi Mason, Lin, Sharon, He, Yuan, Flear, Erica et al. 2022. "Side-Chain Length and Dispersity in ROMP Polymers with Pore-Generating Side Chains for Gas Separations." JACS Au, 2 (7).
Version
Final published version
Abstract
Bottlebrush polymers with flexible backbones and rigid side chains have shown ultrahigh CO2 permeability and plasticization resistance for membrane-based gas separations. To date, this class of polymers has only been studied with polydisperse side chains. Herein, we report gas transport properties of a methoxy (OMe) functionalized polymer synthesized via ring-opening metathesis polymerization (ROMP) with uniform side-chain lengths ranging from n = 2 to 5 repeat units to elucidate the role of both side-chain length and dispersity on gas transport properties and plasticization resistance. As side-chain length increased, both Brunauer-Emmett-Teller (BET) surface area and gas permeability increased with minimal losses in gas selectivity. Increased plasticization resistance was also observed with increasing side-chain length, which can be attributed to increased interchain rigidity from longer side chains. Controlling the side-chain length provides an effective strategy to rationally control and optimize the performance of ROMP polymers for CO2-based gas separations.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1021/jacsau.2c00219
