Shape-Stable Hydrated Salts/Polyacrylamide Phase-Change Organohydrogels for Smart Temperature Management,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Shape-Stable Hydrated Salts/Polyacrylamide Phase-Change Organohydrogels for Smart Temperature Management
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-04-27 , DOI: 10.1021/acsami.1c03996
Chenxiao Yin ₁ , Ji Lan ₁ , Xiangdong Wang ₁ , Yulin Zhang ₁ , Rong Ran ₁ , Ling-Ying Shi ₁

Affiliation

Flexible and environmentally friendly phase-change materials (PCMs) with appropriate phase transition temperatures display great potential in the regulation of environmental temperature. Here, we synthesized a series of room-temperature-use phase-change organohydrogels (PCOHs) comprising phase-change hydrated salts (disodium phosphate dodecahydrate, DPDH) and polyacrylamide (PAM) glycerol hydrogels through a facile photoinitiated one-step in situ polymerization procedure. Incorporating the environmentally friendly cost-effective DPDH hydrated salts PCMs into antidrying three-dimensional (3D) networks of the PAM organohydrogel can overcome the solid rigidity and melting leakage to achieve flexibility for wearable temperature management devices. The microstructures and physical interactions among the components of the PCOHs were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and X-ray diffraction (XRD), which demonstrate that the DPDH were uniformly loaded in the networks of the PAM. Phase-change storage and thermal properties of the PCOHs were characterized by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA), and the PCOHs show high energy transition efficiency and shape stability during the long-term storage and thermal cycling. Dynamic rheology and compression tests demonstrate that PCOHs can withstand a certain stress and display flexibility performance even above the melting temperature of DPDH. We also described the smart temperature management capability and the potential application of the PCOHs. This investigation offers a facile method to construct a skin-friendly flexible phase-change glycerol hydrogel and provides an alternative to the traditional melt impregnation or microencapsulation method to prepare phase-change energy storage composites.

中文翻译：

形状稳定的水合盐/聚丙烯酰胺相变有机水凝胶，可实现智能温度管理

具有适当相变温度的柔性环保型相变材料（PCM）在调节环境温度方面显示出巨大潜力。在这里，我们合成了一系列室温下使用的相变有机水凝胶（PCOHs），包括通过相变水合盐（十二水合磷酸二钠，DPDH）和聚丙烯酰胺（PAM）甘油水凝胶，它们是通过简便的光引发的一步一步光引发的。聚合程序。在PAM有机水凝胶的抗干燥三维（3D）网络中加入环保，经济高效的DPDH水合盐PCM，可以克服固体刚度和熔体渗漏，从而为可穿戴温度管理设备提供灵活性。通过扫描电子显微镜（SEM），傅立叶变换红外光谱（FTIR）和X射线衍射（XRD）表征了PCOHs组分之间的微观结构和物理相互作用，这表明DPDH均匀地负载在PCOHs的网络中。 PAM。通过差示扫描量热法（DSC）和热重分析（TGA）对PCOH的相变存储和热性质进行了表征，PCOHs在长期储存和热循环过程中显示出高的能量转换效率和形状稳定性。动态流变和压缩测试表明，即使在DPDH的熔融温度以上，PCOH仍可承受一定的应力并显示出柔韧性。我们还描述了智能温度管理功能以及PCOH的潜在应用。这项研究提供了一种方便的方法来构建对皮肤友好的柔性相变甘油水凝胶，并为制备相变储能复合材料的传统熔体浸渍或微囊化方法提供了一种替代方法。我们还描述了智能温度管理功能以及PCOH的潜在应用。这项研究提供了一种方便的方法来构建对皮肤友好的柔性相变甘油水凝胶，并为制备相变储能复合材料的传统熔体浸渍或微囊化方法提供了一种替代方法。我们还描述了智能温度管理功能以及PCOH的潜在应用。这项研究提供了一种方便的方法来构建对皮肤友好的柔性相变甘油水凝胶，并为制备相变储能复合材料的传统熔体浸渍或微囊化方法提供了一种替代方法。

更新日期：2021-05-12

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南