Repeatedly Recyclable 3D Printing Catalyst-Free Dynamic Thermosetting Photopolymers

Jingjing Cui; Fukang Liu; Zhe LuShiwei FengChen LiangYongding SunJin CuiBiao Zhang

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Repeatedly Recyclable 3D Printing Catalyst-Free Dynamic Thermosetting Photopolymers

机译：Repeatedly Recyclable 3D Printing Catalyst-Free Dynamic Thermosetting Photopolymers

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Photo-curing 3D printing technology has promoted the advanced manufacturingin various fields, but has exacerbated the environmental crisis bythe demand for the chemically cross-linked thermosetting photopolymers.Here, the authors report a generic strategy to develop catalyst-free dynamicthermosetting photopolymers, based on photopolymerization and transesterification,that can enable users to realize repeatable 3D printing, providinga practical solution to the environmental challenges. That the β-carbonylgroup adjacent to the ester group greatly accelerates the rate of transesterificationis demonstrated. The generated resins from the immobilization ofthe catalyst-free reversible bonds into the photopolymers leads to a dynamiccovalently crosslinked network structure upon UV based 3D printing, whichexhibit controllable mechanical properties with elastomeric behaviors tothermadapt shape memory polymers. Furthermore, the resulting network canbe reverted into an acrylate-functioned photopolymer that is suitable for 3Dprinting again, presenting an on-demand, repeatedly recyclable thermosettingphotopolymer platform for sustainable 3D printing.

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来源
《Advanced Materials》 |2023年第20期|2211417.1-2211417.10|共10页
作者
Jingjing Cui; Fukang Liu; Zhe LuShiwei FengChen LiangYongding SunJin CuiBiao Zhang;
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作者单位

Frontiers Science Center for Flexible Electronics (FSCFE)Research & Development Institute of Northwestern PolytechnicalUniversity in ShenzhenNingbo Institute of Northwestern Polytechnical UniversityNorthwestern Polytechnical University127 West Youyi Road,;

School of Information and Science TechnologyNorthwest University1 Xuefu Street, Xi’an 710127, China;

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正文语种英语
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catalyst free transesterification; dynamic covalent bonds; repeatedly recyclable; sustainable 3D printing; thermosetting photopolymer;

Repeatedly Recyclable 3D Printing Catalyst-Free Dynamic Thermosetting Photopolymers

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