Abstract
We developed poly(lactic acid) (PLA) compounds which achieved recyclable shape-memory and practical strength. The PLA compounds were composed of a furan-modified poly(lactic acid) and a maleimide linker, and cross-linked by the Diels-Alder cyclo-addition between furan and maleimide functions. The cross-linking condition was optimized to increase a reaction ratio between furan and maleimide functions, and the increase in the reaction ratio decreased the defects in its structure and enhanced its strength. Furthermore, using a maleimide linker with a flexible unit (dodecamethylene dimaleimide) induced relaxation of the inner strain in the PLA compound also enhanced its strength.
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Yamashiro, M., Inoue, K. & Iji, M. Recyclable Shape-memory and Mechanical Strength of Poly(lactic acid) Compounds Cross-linked by Thermo-reversible Diels-Alder Reaction. Polym J 40, 657–662 (2008). https://doi.org/10.1295/polymj.PJ2008042
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DOI: https://doi.org/10.1295/polymj.PJ2008042
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