AI Article Synopsis
- Researchers created a new methacrylate molecule that includes a bulky trichloro salicylic acid part, which helps synthesize a specific copolymer made from methyl methacrylate (MMA) and n-butyl acrylate (nBA).
- The newly designed molecule, known as the adamantyl-substituted methacrylate monomer (1-Ad), showed little tendency to form homopolymers on its own but successfully copolymerized with nBA.
- The resulting copolymer's structure was confirmed using C NMR spectroscopy, and it demonstrated enhanced self-healing properties compared to a standard statistical copolymer.
Article Abstract
In this study, we designed a methacrylate molecule with an alkyl-substituted trichloro salicylic acid pendant as a transformable bulky monomer to enable the synthesis of an alternating copolymer of methyl methacrylate (MMA) and n-butyl acrylate (nBA). The adamantyl-substituted methacrylate monomer (1-Ad) showed very low homopolymerization propensity in radical polymerizations, but afforded the alternating copolymer with nBA via copolymerization. The 1-Ad units in the resultant copolymer were quantitatively and selectively transformed into MMA via transesterification with methanol to yield the alternating copolymer of MMA and nBA. Its alternating sequence was clearly demonstrated by a structural analysis via C NMR spectroscopy as well as the low reactivity ratios for the 1-Ad and nBA pair. Finally, we verified the superior self-healing ability of the alternating copolymer compared to that of the corresponding 1 : 1 statistical copolymer.
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| http://dx.doi.org/10.1002/anie.202218597 | DOI Listing |
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