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Synthesis of Vanillin-Based Polyimine Vitrimers with Excellent Reprocessability, Fast Chemical Degradability, and Adhesion
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-11-15 , DOI: 10.1021/acsapm.0c01008 Zhen Zhou 1 , Xunzheng Su 1 , Jingcheng Liu 1 , Ren Liu 1
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-11-15 , DOI: 10.1021/acsapm.0c01008 Zhen Zhou 1 , Xunzheng Su 1 , Jingcheng Liu 1 , Ren Liu 1
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A series of biobased polyimine vitrimers was synthesized by condensation between a dialdehyde or trialdehyde derived from vanillin and a commercial biobased aliphatic amine. The structure, thermal stability, mechanical properties, and reprocessability of vitrimers with different cross-linking degrees were investigated. The results indicated that the glass transition temperature (Tg) of vitrimers increased with the increase of cross-linking density. In addition, the vitrimers showed good malleability and recyclability even with high cross-linking degree based on fast imine metathesis. The degradation test of polyimine vitrimers suggested that the decomposition rate increased with the rising temperature, and the vitrimer degraded rapidly in 0.1 M HCl aqueous solution. After acid degradation, the aldehyde monomer was precipitated, and it can be reused to prepare a vitrimer to realize the closed-loop cycle. Finally, the biobased polyimine vitrimers can be used as adhesives, and the shear tensile strength showed that the bond strength of the vitrimer was up to 6.79 MPa.
中文翻译：
具有出色的可再加工性，快速化学降解性和粘附力的基于香兰素的聚亚胺三聚体
通过衍生自香兰素的二醛或三醛与市售生物基脂族胺缩合，合成了一系列生物基聚亚胺三聚体。研究了不同交联度的三聚体的结构，热稳定性，力学性能和可再加工性。结果表明，玻璃化转变温度（T g随着交联密度的增加，三元共聚物的）增加。另外，基于快速的亚胺复分解，即使在高交联度的情况下，三聚体也显示出良好的延展性和可回收性。聚亚胺三聚物的降解试验表明，分解速率随温度的升高而增加，在0.1 M HCl水溶液中，三聚物迅速降解。酸降解后，醛单体沉淀出来，可以重复使用以制备微晶粉以实现闭环循环。最后，该生物基聚亚胺三聚体可以用作粘合剂，剪切抗张强度表明该三聚体的结合强度高达6.79 MPa。
更新日期：2020-12-11
中文翻译：
具有出色的可再加工性，快速化学降解性和粘附力的基于香兰素的聚亚胺三聚体
通过衍生自香兰素的二醛或三醛与市售生物基脂族胺缩合，合成了一系列生物基聚亚胺三聚体。研究了不同交联度的三聚体的结构，热稳定性，力学性能和可再加工性。结果表明，玻璃化转变温度（T g随着交联密度的增加，三元共聚物的）增加。另外，基于快速的亚胺复分解，即使在高交联度的情况下，三聚体也显示出良好的延展性和可回收性。聚亚胺三聚物的降解试验表明，分解速率随温度的升高而增加，在0.1 M HCl水溶液中，三聚物迅速降解。酸降解后，醛单体沉淀出来，可以重复使用以制备微晶粉以实现闭环循环。最后，该生物基聚亚胺三聚体可以用作粘合剂，剪切抗张强度表明该三聚体的结合强度高达6.79 MPa。
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