Foaming-Process-Derived Graphene Oxide-Based Foamed PDMS with Micro Scale Air Pockets

IF 2.8 Q3 ENGINEERING, MANUFACTURING

Manufacturing Letters Pub Date : 2026-10-01 Epub Date: 2026-10-05 DOI:10.1016/j.mfglet.2026.07.024

Jongwoo Hong, Hyunjune Lee, Jin Hong, Geon Mo Kim, Junghyun Joo, Teajong Hwang, Sung Woon Cha, Seong Chan Jun

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Abstract

Lightweight polymeric foams have attracted considerable attention as thermal insulation, impact absorption layers, and even soft robotics owing to their low density, tunable elasticity and low thermal conductivity. In this study, a graphene oxide (GO) based foamed polydimethylsiloxane (PDMS) composite was fabricated through a controlled foaming process, forming a 3D porous network with micro air pockets uniformly distributed within the PDMS matrix. The incorporation of GO enhanced the interfacial bonding with PDMS chains, promoting stable bubble formation and improving the overall pore uniformity. Structural investigation indicated that the resultant foam possessed an average pore size of 52.6

μ

m and uniformity of 71.2%, reflecting a meticulously regulated microstructure affected by both foaming temperature and GO content. These findings offer essential understanding of the process-structure interaction in polymeric foams and underscore the potential of GO/PDMS composites as adaptable platforms for lightweight and flexible functional materials.

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泡沫工艺衍生的氧化石墨烯基具有微尺度气穴的发泡PDMS

轻质聚合物泡沫由于其低密度、可调弹性和低导热性，在隔热、冲击吸收层甚至软机器人领域受到了广泛关注。在本研究中，通过控制发泡工艺制备了一种基于氧化石墨烯（GO）的发泡聚二甲基硅氧烷（PDMS）复合材料，形成了三维多孔网络，微气穴均匀分布在PDMS基体内。氧化石墨烯的加入增强了与PDMS链的界面结合，促进了稳定的气泡形成，提高了整体孔隙均匀性。结构研究表明，泡沫的平均孔径为52.6 μ m，均匀度为71.2%，反映了泡沫温度和氧化石墨烯含量对泡沫微观结构的精细调控。这些发现提供了对聚合物泡沫中工艺结构相互作用的基本理解，并强调了GO/PDMS复合材料作为轻量化和柔性功能材料的适应性平台的潜力。

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