Abstract The developing polyethylene glycol (PEG) and polyvinyl alcohol (PVA) double network (DN) hydrogel are promising to utilize as matrix composites due to their unique characteristics such as shape memory. The DN hydrogel are hydrophilic smart materials that possess shape memory phenomenon by thermal stimuli-responsive. Scientifically, the DN hydrogel can describe as a combination of polymers with two different sets of properties. In particular, the PEG play as a minor network of a stiff framework and the PVA play as a major network of an elastic matter. In addition, the use of carbon nanotubes (CNTs) become reinforcement has emerged as one of the most promising to bring new conceptual paradigm for DN hydrogel, due to their advantages have well-established in the polymer matrix. The development of DN hydrogel composite becomes high novelty with approaching attributes on general studies about shape memory and printability. The result shows that the CNTs additional are capable to maintain the shape memory effect of hydrogels and improve the viscoelasticity for printability, respectively.

中文翻译：

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碳纳米管增强对聚乙烯醇-聚乙二醇双网络水凝胶复合材料的影响：形状记忆和可印刷性的一般方法

摘要 正在开发的聚乙二醇 (PEG) 和聚乙烯醇 (PVA) 双网络 (DN) 水凝胶由于其独特的形状记忆特性而有望用作基体复合材料。DN水凝胶是亲水性智能材料，通过热刺激响应具有形状记忆现象。从科学上讲，DN 水凝胶可以描述为具有两组不同特性的聚合物的组合。特别是，PEG 作为刚性框架的次要网络，而 PVA 作为弹性物质的主要网络。此外，使用碳纳米管 (CNT) 增强材料已成为最有希望为 DN 水凝胶带来新概念范式的方法之一，因为它们的优势已在聚合物基质中得到充分确立。DN 水凝胶复合材料的开发具有很高的新颖性，具有接近关于形状记忆和可印刷性的一般研究的属性。结果表明，添加的 CNTs 能够分别保持水凝胶的形状记忆效应和提高粘弹性以提高可印刷性。