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Intrinsic Permanent Shape Reconfigurable Semicrystalline Biopolyester Thermoset
ACS Macro Letters ( IF 5.1 ) Pub Date : 2024-07-30 , DOI: 10.1021/acsmacrolett.4c00266 Xiangping Chen 1 , Jie-Wei Wong 1 , Jia Tee Low 2 , Tow-Jie Lok 2 , Yaoting Xue 1 , Zehao Zeng 1 , Kaihang Zhang 1 , Yifeng Shen 1 , Siyang Li 1 , Haofei Zhou 1 , Qian Zhao 3 , Tuck-Whye Wong 1, 2 , Tiefeng Li 1 , Wei Yang 1
ACS Macro Letters ( IF 5.1 ) Pub Date : 2024-07-30 , DOI: 10.1021/acsmacrolett.4c00266 Xiangping Chen 1 , Jie-Wei Wong 1 , Jia Tee Low 2 , Tow-Jie Lok 2 , Yaoting Xue 1 , Zehao Zeng 1 , Kaihang Zhang 1 , Yifeng Shen 1 , Siyang Li 1 , Haofei Zhou 1 , Qian Zhao 3 , Tuck-Whye Wong 1, 2 , Tiefeng Li 1 , Wei Yang 1
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Catalyst-free, volatile organic solvent (VOC)-free synthesis of biobased cross-linked polymers is an important sustainable feature in polyesterification. To date, these polyesters have been extensively studied for their fundamental sustainability across various uses. The ultimate potential sustainability for these materials, however, is constrained to static structural parts due to their intractable rigid three-dimensional (3D) network. Here, we reveal intrinsic dynamic exchangeable bonds within this type of cross-linked semicrystalline network, poly(1,8-octanediol-co-1,12-docanedioate-co-citrate) (PODDC), enabling permanent shape reconfigurability. Annealing at slightly above melting-transition temperature (Tm) allows for shape reconfigurability up to nine times, comparable in performance to the existing bond-exchange systems. No reagents are involved from synthesis to shape reconfiguration, suggesting an exciting feature exhibited by this sustainable cross-linked material without the need for further chemical modification. We further extend this benefit of reconfigurability to enable flexible shape design in a smart shape-memory polymer (SMP), showing it as one of its potential applications. After its applications, it can undergo hydrolytic degradation. We envision that such multifaceted sustainability for the material will attract interest in environmentally friendly applications such as fabricating external part of soft robots and shape-morphing devices with reduced environmental impact.
中文翻译：
本质永久形状可重构半结晶生物聚酯热固性材料
无催化剂、无挥发性有机溶剂（VOC）合成生物基交联聚合物是聚酯化的一个重要的可持续特征。迄今为止，人们已经对这些聚酯在各种用途中的基本可持续性进行了广泛的研究。然而，这些材料的最终潜在可持续性仅限于静态结构部件，因为它们具有棘手的刚性三维 (3D) 网络。在这里，我们揭示了这种类型的交联半晶网络聚（1,8-辛二醇-co -1,12-十二烷二酸酯-co-柠檬酸酯）（PODDC）内固有的动态可交换键，从而实现了永久形状可重构性。在略高于熔化转变温度 ( T m ) 的温度下进行退火，可实现高达九次的形状可重构性，其性能可与现有的键交换系统相媲美。从合成到形状重构不涉及任何试剂，这表明这种可持续交联材料无需进一步化学修饰即可展现出令人兴奋的特征。我们进一步扩展了可重构性的这一优势，以在智能形状记忆聚合物（SMP）中实现灵活的形状设计，将其视为其潜在应用之一。使用后，它会发生水解降解。我们预计，这种材料的多方面可持续性将吸引人们对环保应用的兴趣，例如制造软机器人的外部部件和减少对环境影响的变形设备。
更新日期：2024-07-30
中文翻译：
本质永久形状可重构半结晶生物聚酯热固性材料
无催化剂、无挥发性有机溶剂（VOC）合成生物基交联聚合物是聚酯化的一个重要的可持续特征。迄今为止，人们已经对这些聚酯在各种用途中的基本可持续性进行了广泛的研究。然而，这些材料的最终潜在可持续性仅限于静态结构部件，因为它们具有棘手的刚性三维 (3D) 网络。在这里，我们揭示了这种类型的交联半晶网络聚（1,8-辛二醇-co -1,12-十二烷二酸酯-co-柠檬酸酯）（PODDC）内固有的动态可交换键，从而实现了永久形状可重构性。在略高于熔化转变温度 ( T m ) 的温度下进行退火，可实现高达九次的形状可重构性，其性能可与现有的键交换系统相媲美。从合成到形状重构不涉及任何试剂，这表明这种可持续交联材料无需进一步化学修饰即可展现出令人兴奋的特征。我们进一步扩展了可重构性的这一优势，以在智能形状记忆聚合物（SMP）中实现灵活的形状设计，将其视为其潜在应用之一。使用后，它会发生水解降解。我们预计，这种材料的多方面可持续性将吸引人们对环保应用的兴趣，例如制造软机器人的外部部件和减少对环境影响的变形设备。
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