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Mehringer KD, Davis BJ, Kemp LK, Ma G, Hunt SB, Storey RF, Gu X, Thornell TL, Wedgeworth DN, Simon YC, Morgan SE. Synthesis and Morphology of High Molecular Weight Polyisobutylene-Polystyrene Block Copolymers Containing Dynamic Covalent Bonds. Macromol Rapid Commun 2022; 43:e2200487. [PMID: 35822234 DOI: 10.1002/marc.202200487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/01/2022] [Indexed: 11/06/2022]
Abstract
Incorporating dynamic covalent bonds into block copolymers provides useful molecular level information during mechanical testing, but it is currently unknown how the incorporation of these units affects the resultant polymer morphology. High molecular weight polyisobutylene-b-polystyrene (PIB-b-PS) block copolymers containing an anthracene/maleimide dynamic covalent bond were synthesized through a combination of post polymerization modification, reversible addition-fragmentation chain-transfer (RAFT) polymerization, and Diels-Alder coupling. The bulk morphologies with and without dynamic covalent bond were characterized by AFM and SAXS which revealed a strong dependence on annealing time and casting solvent. Morphology is largely unaffected by the inclusion of the mechanophore. The high molecular weight polymers synthesized allow interrogation of a large range of polymer domain sizes. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Kyle D Mehringer
- School of Polymer Science and Engineering, University of Southern Mississippi, 118 College Drive # 5050, Hattiesburg, MS, 39406, USA
| | - Brad J Davis
- School of Polymer Science and Engineering, University of Southern Mississippi, 118 College Drive # 5050, Hattiesburg, MS, 39406, USA
| | - Lisa K Kemp
- School of Polymer Science and Engineering, University of Southern Mississippi, 118 College Drive # 5050, Hattiesburg, MS, 39406, USA
| | - Guorong Ma
- School of Polymer Science and Engineering, University of Southern Mississippi, 118 College Drive # 5050, Hattiesburg, MS, 39406, USA
| | - Samuel B Hunt
- School of Polymer Science and Engineering, University of Southern Mississippi, 118 College Drive # 5050, Hattiesburg, MS, 39406, USA
| | - Robson F Storey
- School of Polymer Science and Engineering, University of Southern Mississippi, 118 College Drive # 5050, Hattiesburg, MS, 39406, USA
| | - Xiaodan Gu
- School of Polymer Science and Engineering, University of Southern Mississippi, 118 College Drive # 5050, Hattiesburg, MS, 39406, USA
| | - Travis L Thornell
- Geotechnical and Structures Laboratory, Engineer Research and Development Center (ERDC), US Army Corps of Engineers (USACE), Vicksburg, MS, 39180, USA
| | - Dane N Wedgeworth
- Geotechnical and Structures Laboratory, Engineer Research and Development Center (ERDC), US Army Corps of Engineers (USACE), Vicksburg, MS, 39180, USA
| | - Yoan C Simon
- School of Polymer Science and Engineering, University of Southern Mississippi, 118 College Drive # 5050, Hattiesburg, MS, 39406, USA
| | - Sarah E Morgan
- School of Polymer Science and Engineering, University of Southern Mississippi, 118 College Drive # 5050, Hattiesburg, MS, 39406, USA
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