Fabrication of polymeric foam with controlled porosity, good mechanical properties and electrical conductivity is demanding. However, developing such a porous system has remained a major challenge till today. Herein, we synthesized 1-methyl imidazole chloride ionic liquid grafted graphene oxide (G[MIM]Cl) and utilized it as an effective agent for controlling the strength, distribution and dimension of the pores of polyurethane foam system (ILF). On the contrary, the polymeric foams fabricated with pristine expandable graphite (GF) and the neat polymer (PUF) demonstrated a distorted cell structure and an uneven distribution of the pores. Additionally, the mechanical properties of GF and PUF were found to be inferior compared to those of ILF. The effect of surface modification of filler on the dispersion in the polyurethane matrix was also studied and compared with the dispersion of the un-functionalized filler. The ILF exhibited higher electrical conductivity over the GF and the PUF. Compressive stress-strain behavior and dynamic mechanical properties indicated that ILF demonstrated significant mechanical robustness compared to GF and PUF. These findings can be readily extended to the development of complex three dimensional polymeric architecture where controlled porosity is required.

要求制造具有可控制的孔隙率，良好的机械性能和导电性的聚合物泡沫。然而，直到今天，开发这样的多孔系统仍然是主要的挑战。在这里，我们合成了1-甲基咪唑氯化物离子液体接枝的氧化石墨烯（G [MIM] Cl），并将其用作控制聚氨酯泡沫体系（ILF）的孔的强度，分布和尺寸的有效剂。相反，用原始可膨胀石墨（GF）和纯聚合物（PUF）制成的聚合物泡沫表现出变形的孔结构和不均匀的孔分布。另外，发现GF和PUF的机械性能比ILF的机械性能差。还研究了填料的表面改性对聚氨酯基体中分散体的影响，并将其与未官能化填料的分散体进行了比较。与GF和PUF相比，ILF表现出更高的电导率。压缩应力-应变行为和动态力学性能表明，与GF和PUF相比，ILF表现出显着的机械强度。这些发现可以很容易地扩展到需要控制孔隙度的复杂三维聚合物体系结构的开发。