Mechanism of Interconnected Pore Formation in High Internal Phase Emulsion-Templated Polymer,ACS Macro Letters

当前位置： X-MOL 学术 › ACS Macro Lett. › 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.)

Mechanism of Interconnected Pore Formation in High Internal Phase Emulsion-Templated Polymer
ACS Macro Letters ( IF 5.1 ) Pub Date : 2024-07-11 , DOI: 10.1021/acsmacrolett.4c00207
Shengmiao Zhang ₁ , Mingjun Chen ₁ , Yijing You ₁ , Yiling Wang ₁ , Yun Zhu ₁

Affiliation

High internal phase emulsion-templated polymer, named polyHIPE, has received widespread attention due to its great potential applications in many fields, such as separation, adsorption, heterogeneous catalysis, and sound absorption. The broad applicability is largely dependent on its adjustable opening structure. However, the question of why polyHIPE has an interconnected pore network structure is still to be discussed. Herein, different types (w/o, o/w, and o/o) of HIPEs are prepared and subsequently detected with laser scanning confocal microscopy (LSCM), and the polyHIPEs obtained by curing the HIPEs are characterized by SEM. The observations suggest that the interconnected pore formation is primarily due to the presence of the surfactant-rich phase in the film between the neighboring droplets in HIPE. The interconnected pores are generated by removal of the surfactant-rich domains in the postcuring procedure, and their sizes would be enlarged if the solubility of the surfactant in the continuous phase decreases in the curing stage.

中文翻译：

高内相乳液模板聚合物中连通孔的形成机理

高内相乳液模板聚合物polyHIPE因其在分离、吸附、多相催化、吸声等领域的巨大应用潜力而受到广泛关注。广泛的适用性很大程度上取决于其可调节的开口结构。然而，polyHIPE为何具有互连的孔网络结构的问题仍有待讨论。在此，制备了不同类型（w/o、o/w和o/o）的HIPE，随后用激光扫描共焦显微镜（LSCM）进行检测，并通过SEM对通过固化HIPE获得的polyHIPE进行表征。观察结果表明，互连孔的形成主要是由于 HIPE 中相邻液滴之间的薄膜中存在富含表面活性剂的相。互连孔是通过在后固化过程中去除富含表面活性剂的区域而产生的，如果在固化阶段表面活性剂在连续相中的溶解度降低，则它们的尺寸会增大。

更新日期：2024-07-11

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