Leguizamon Samuel C, Lyons Kenneth, Monk Nicolas T, Hochrein Madison T, Jones Brad H, Foster Jeffrey C
Sandia National Laboratories, Albuquerque, New Mexico87185, United States.
ACS Appl Mater Interfaces. 2022 Nov 16;14(45):51301-51306. doi: 10.1021/acsami.2c14411. Epub 2022 Nov 1.
Thermoset materials comprise a significant proportion of high-performance plastics due to their shape permanence and excellent thermal and mechanical properties. However, these properties come at the expense of degradability. Here, we show for the first time that the industrial thermoset polydicyclopentadiene (PDCPD) can be additively manufactured (AM) with degradable 2,3-dihydrofuran (DHF) linkages using a photochemical approach. Treatment of the manufactured objects with acid results in rapid degradation to soluble byproducts. This work highlights the potential of ring-opening metathesis polymerization (ROMP) chemistry to create degradable materials amenable to advanced manufacturing processes.
由于其形状稳定性以及优异的热性能和机械性能，热固性材料在高性能塑料中占很大比例。然而，这些性能是以牺牲可降解性为代价的。在此，我们首次展示了工业热固性聚二环戊二烯（PDCPD）可以通过光化学方法与可降解的2,3 - 二氢呋喃（DHF）键进行增材制造（AM）。用酸处理制造的物体可使其快速降解为可溶性副产物。这项工作突出了开环易位聚合（ROMP）化学在制造适用于先进制造工艺的可降解材料方面的潜力。
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