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Room temperature-responsive poly(vinyl hydroxyalkyl ether-alt-dialkyl maleate)-based vitrimers with dynamic boronic ester bonds
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2024-01-05 , DOI: 10.1002/app.55172 Guochen Wang 1 , Weiping Xu 1 , Yanxin Zhang 1 , Dong Chen 1 , Yuhong Ma 1 , Changtong Song 1 , Wantai Yang 1
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2024-01-05 , DOI: 10.1002/app.55172 Guochen Wang 1 , Weiping Xu 1 , Yanxin Zhang 1 , Dong Chen 1 , Yuhong Ma 1 , Changtong Song 1 , Wantai Yang 1
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Dynamic BO bonds are often applied to fabricate reversible-cross-linking and reprocessable polymer networks due to their high thermodynamic stability and kinetic tunability. However, it is still difficult to tailor boronic ester polymers, which have both excellent mechanical and self-healing properties in the absence of external stimuli. To address the above challenge, a range of room-temperature self-healable vitrimers are prepared by the reactions of various poly(vinyl hydroxyalkyl ether-alt-dialkyl maleate) copolymers and 1,4-phenyldiboronic acid. The dynamic cross-linking networks offer the as-prepared vitrimers superior mechanical properties and thermostability. Because of the presence of dynamic boronic ester bonds, the networks also demonstrated self-healing (the tensile strength recovered to 83% after 3 days at room temperature) and reprocessing capabilities (no significant change in tensile strength after thrice process recycles). Moreover, the vitrimers have potential as promising damping materials with wide temperature windows around room temperature. For example, the vitrimer of poly(ethylene glycol monovinyl ether-alt-dibutyl maleate) and 1,4-phenyldiboronic acid demonstrates its tanδmax 1.18, Tg = 6.2°C and effective damping temperature range is from −16.4 to 48.5°C.
中文翻译：
具有动态硼酯键的室温响应性聚（乙烯基羟烷基醚-马来酸二烷基酯）基玻璃三聚体
动态 B O 键由于其高热力学稳定性和动力学可调性，通常用于制造可逆交联和可再加工的聚合物网络。然而，定制硼酯聚合物仍然很困难，使其在没有外部刺激的情况下具有优异的机械性能和自修复性能。为了解决上述挑战，通过各种聚（乙烯基羟烷基醚-马来酸二烷基酯）共聚物与1,4-苯基二硼酸的反应制备了一系列室温自修复的玻璃体。动态交联网络为所制备的玻璃体提供了优异的机械性能和热稳定性。由于动态硼酯键的存在，该网络还表现出自修复能力（室温下3天后拉伸强度恢复到83%）和再加工能力（三次加工循环后拉伸强度没有显着变化）。此外，vitrimer 具有作为有前途的阻尼材料的潜力，在室温附近具有宽温度窗口。例如，聚（乙二醇单乙烯基醚-马来酸二丁酯）和1,4-苯基二硼酸的Vitrimer表现出其tanδ max 1.18，T g = 6.2°C，有效阻尼温度范围为-16.4至48.5° C。
更新日期：2024-01-05
中文翻译：
具有动态硼酯键的室温响应性聚（乙烯基羟烷基醚-马来酸二烷基酯）基玻璃三聚体
动态 B O 键由于其高热力学稳定性和动力学可调性，通常用于制造可逆交联和可再加工的聚合物网络。然而，定制硼酯聚合物仍然很困难，使其在没有外部刺激的情况下具有优异的机械性能和自修复性能。为了解决上述挑战，通过各种聚（乙烯基羟烷基醚-马来酸二烷基酯）共聚物与1,4-苯基二硼酸的反应制备了一系列室温自修复的玻璃体。动态交联网络为所制备的玻璃体提供了优异的机械性能和热稳定性。由于动态硼酯键的存在，该网络还表现出自修复能力（室温下3天后拉伸强度恢复到83%）和再加工能力（三次加工循环后拉伸强度没有显着变化）。此外，vitrimer 具有作为有前途的阻尼材料的潜力，在室温附近具有宽温度窗口。例如，聚（乙二醇单乙烯基醚-马来酸二丁酯）和1,4-苯基二硼酸的Vitrimer表现出其tanδ max 1.18，T g = 6.2°C，有效阻尼温度范围为-16.4至48.5° C。
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