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Glycerol-regulated tough and electroresponsive alginate hydrogels for a muscle-like biobased polymer actuator with highly sensitive and durable output force
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-07-10 , DOI: 10.1002/app.51393 Junjie Yang 1 , Zhijie Wang 2 , Siyong Wang 1
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-07-10 , DOI: 10.1002/app.51393 Junjie Yang 1 , Zhijie Wang 2 , Siyong Wang 1
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In this work, with glycerol as a moisturizer, effect and enhancement mechanism of glycerol doping content on the responsiveness, force output and tremor behavior of the muscle-like biobased polymer actuator (MBPA) were intensively investigated. Then its electroresponsive properties were characterized by a set of valid test methods proposed in detail. Experiments revealed that the optimal glycerol doping content was 3 ml, then MBPA had the best force output and responsiveness characteristics of the maximum about 5.78 mN and 0.230 mN/s, respectively, which were 3.5 and 5.5 times larger than that of the undoped MBPA. Besides, at 5 ml glycerol doping content, tremor amplitude and frequency of MBPA on the force output were around 0.7 mN and three, which were correspondingly 0.27 and 0.12 times lower than the maximum. Moreover, enhancement principle of the MBPA was that doping glycerol could make its surface form a thin membrane to retain moisture inside the MBPA with a stable ion migration environment. Because of small molecules, glycerol was able to interpenetrate with sodium alginate, which destroyed the interaction force but promoted the relative sliding capability between its macromolecular chains, with the number of hydrogen bonds and the rotational activation energy reducing.
中文翻译：
甘油调节的坚韧和电响应藻酸盐水凝胶，用于具有高度灵敏和持久输出力的肌肉样生物基聚合物致动器
在这项工作中，以甘油作为保湿剂，深入研究了甘油掺杂含量对肌肉样生物基聚合物致动器（MBPA）的响应性、力输出和震颤行为的影响和增强机制。然后通过详细提出的一组有效测试方法表征其电响应特性。实验表明，甘油的最佳掺杂量为3 ml，此时MBPA的力输出和响应特性最好，最大值分别为5.78 mN和0.230 mN/s，分别是未掺杂MBPA的3.5倍和5.5倍。此外，在5 ml甘油掺杂含量下，MBPA对力输出的震颤幅度和频率约为0.7 mN和3，分别比最大值低0.27和0.12倍。而且，MBPA的增强原理是掺杂甘油可以使其表面形成一层薄膜，将水分保留在MBPA内部，具有稳定的离子迁移环境。由于分子小，甘油能够与海藻酸钠相互渗透，破坏了相互作用力，但促进了其大分子链之间的相对滑动能力，氢键数量和旋转活化能降低。
更新日期：2021-09-09
中文翻译：
甘油调节的坚韧和电响应藻酸盐水凝胶，用于具有高度灵敏和持久输出力的肌肉样生物基聚合物致动器
在这项工作中，以甘油作为保湿剂，深入研究了甘油掺杂含量对肌肉样生物基聚合物致动器（MBPA）的响应性、力输出和震颤行为的影响和增强机制。然后通过详细提出的一组有效测试方法表征其电响应特性。实验表明，甘油的最佳掺杂量为3 ml，此时MBPA的力输出和响应特性最好，最大值分别为5.78 mN和0.230 mN/s，分别是未掺杂MBPA的3.5倍和5.5倍。此外，在5 ml甘油掺杂含量下，MBPA对力输出的震颤幅度和频率约为0.7 mN和3，分别比最大值低0.27和0.12倍。而且，MBPA的增强原理是掺杂甘油可以使其表面形成一层薄膜，将水分保留在MBPA内部，具有稳定的离子迁移环境。由于分子小，甘油能够与海藻酸钠相互渗透，破坏了相互作用力，但促进了其大分子链之间的相对滑动能力，氢键数量和旋转活化能降低。
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