Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone)
AbstractAlthough the copolymerizations of l-lactide (LA) with seven- or six-membered ring lactones have been extensively studied, the copolymerizations of LA with four-membered ring lactones have scarcely been reported. In this work, we studied the copolymerization of LA with β-propiolactone (PL) and the properties of the obtained copolymers. The copolymerization of LA with PL was carried out using trifluoromethanesulfonic acid as a catalyst and methanol as an initiator to produce poly(LA-co-PL) with Mn of ~50,000 and PL-content of 6–67 mol %. The Tg values of the copolymers were rapidly lowered with increasing PL-contents. The Tm and ΔHm of the copolymers gradually decreased with increasing PL-contents, indicating their decreased crystallinity. Biodegradation test of the copolymers in compost demonstrated their improved biodegradability in comparison with the homopolymer of LA. View Full-Text
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Nakayama, Y.; Aihara, K.; Cai, Z.; Shiono, T.; Tsutsumi, C. Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone). Int. J. Mol. Sci. 2017, 18, 1312.
Nakayama Y, Aihara K, Cai Z, Shiono T, Tsutsumi C. Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone). International Journal of Molecular Sciences. 2017; 18(6):1312.Chicago/Turabian Style
Nakayama, Yuushou; Aihara, Kazuki; Cai, Zhengguo; Shiono, Takeshi; Tsutsumi, Chikara. 2017. "Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone)." Int. J. Mol. Sci. 18, no. 6: 1312.
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