Reversible Deactivation Radical Polymerization: From Polymer Network Synthesis to 3D Printing.
Reversible Deactivation Radical Polymerization: From Polymer Network Synthesis to 3D Printing.
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DOI：
10.1002/advs.202003701
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发表时间：
2021-03
期刊：
影响因子：
--
通讯作者：
Boyer C
中科院分区：
文献类型：
--
作者：
Bagheri A;Fellows CM;Boyer C
3D 打印改变了先进材料的制造方式，因为它可以提供定制和按需的 3D 网络。然而，对于工程师、材料和聚合物科学家来说，3D打印具有打印后可变形能力的聚合物材料仍然是一个巨大的挑战。自由基聚合通常用于基于光聚合的 3D 打印，如更广泛的交联聚合物网络。尽管这种反应途径显示出巨大的前景，但它对链增长、链结构以及聚合物网络的最终性能的控制有限。更根本的是，自由基聚合产生无法进行聚合后转化的死聚合物链。或者，将可逆失活自由基聚合（RDRP）应用于聚合物网络可以调整网络均匀性，更重要的是，可以生产含有休眠可再活化物质的先进材料，可用于合成后阶段的后续工艺。因此，通过结构定制和工程大分子凝胶、活性增材制造和光膨胀/可变形聚合物网络的新概念，利用了基于（光激活）RDRP 的网络提供的机会。本文讨论了基于 RDRP 的网络相对于不可逆形成的传统网络的优势。可逆失活自由基聚合 (RDRP) 在聚合物网络和 3D 打印中的应用可以调整网络均匀性，更重要的是，可以生产/制造含有休眠可再激活物质的先进材料，这些材料可用于在后合成/打印阶段改变材料的性能，这是使用传统技术无法实现的特性。
3D printing has changed the fabrication of advanced materials as it can provide customized and on‐demand 3D networks. However, 3D printing of polymer materials with the capacity to be transformed after printing remains a great challenge for engineers, material, and polymer scientists. Radical polymerization has been conventionally used in photopolymerization‐based 3D printing, as in the broader context of crosslinked polymer networks. Although this reaction pathway has shown great promise, it offers limited control over chain growth, chain architecture, and thus the final properties of the polymer networks. More fundamentally, radical polymerization produces dead polymer chains incapable of postpolymerization transformations. Alternatively, the application of reversible deactivation radical polymerization (RDRP) to polymer networks allows the tuning of network homogeneity and more importantly, enables the production of advanced materials containing dormant reactivatable species that can be used for subsequent processes in a postsynthetic stage. Consequently, the opportunities that (photoactivated) RDRP‐based networks offer have been leveraged through the novel concepts of structurally tailored and engineered macromolecular gels, living additive manufacturing and photoexpandable/transformable‐polymer networks. Herein, the advantages of RDRP‐based networks over irreversibly formed conventional networks are discussed. The application of reversible deactivation radical polymerization (RDRP) to polymer networks and 3D printing allows the tuning of network homogeneity and more importantly, enables the production/manufacturing of advanced materials containing dormant reactivatable species that can be used to change the material's properties in a postsynthetic/printing stage, a characteristic that is not achievable using conventional techniques.
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DOI：
10.1002/advs.202003701
发表时间：
2021-03
期刊：
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子：
--
作者：
Bagheri A;Fellows CM;Boyer C
通讯作者：
Boyer C
影响因子：
4.6
作者：
Bagheri, Ali;Yeow, Jonathan;Lim, May
通讯作者：
Lim, May
影响因子：
9.5
作者：
Credi, Caterina;Fiorese, Alessandro;Turri, Stefano
通讯作者：
Turri, Stefano
影响因子：
5.5
作者：
Bannister, Iveta;Billingham, Norman C.;Findlay, Paul
通讯作者：
Findlay, Paul
影响因子：
7.015
作者：
Chen, Mao;MacLeod, Michelle J.;Johnson, Jeremiah A.
通讯作者：
Johnson, Jeremiah A.