Surface treatment of halloysite nanotubes with sol–gel reaction for the preparation of epoxy composites

Abstract

Halloysite nanotubes (HNTs) are naturally occurring aluminosilicates that have received attention for their high aspect ratio and low cost, which makes them suitable for commercial applications.

Halloysite Nanotubes as an Additive to Ensure Enhanced Characteristics of Cold-Curing Epoxy Resins under Fire Conditions

“…It has already been shown in an earlier study by Polanský et al [ 41 ] that polymer composites based on HNTs without any surface treatment and thus with a high level of agglomeration can still achieve desirable dielectric properties for many applications in electrical engineering. Of course, the level of agglomeration can be reduced by using an additional surface treatment of the HNTs, as mentioned in [ 42 , 43 ]; however, the decrease in agglomeration comes at the cost of a decrease in dielectric properties. Nevertheless, although agglomerates widely occur in the produced composites, Figure 2 shows that their distribution within the volume of the material is uniform and has similar characteristics as in the study by Mo et al [ 44 ].…”

Enhanced proton transport properties of Nafion via functionalized halloysite nanotubes

“…1 g and h). The results are shown in Table 1 for the HNTs and HNTs- [30]. In addition, a small amount of sulfur was detected after the second step of the modification (Scheme Ia and Table 1) in HNTs-SO3H spectrum which indicates the reaction between the -NH2 groups of APTES and propane sultone (PS).…”

Clay-Based Nanocomposite Hydrogels for Biomedical Applications: A Review

“…Basic 1:1 kaolinite silicate rolled over to form halloysite nanotubes (HNTs). (Reprinted with permission from [27]. Copyright 2017, Royal Society of Chemistry).…”