Mechanical and Water Uptake Properties of Epoxy Nanocomposites with Surfactant-Modified Functionalized Multiwalled Carbon Nanotubes

The superior mechanical properties of multi-walled carbon nanotubes (MWCNTs) play a significant role in the improvement and thermal stability an epoxy matrix. However, agglomeration (CNTs) is common challenge should be resolved to achieve desired enhancement effect. present paper investigated thermal, mechanical, water uptake nanocomposites with surfactant-modified MWCNTs. were prepared through incorporation different weight concentrations MWCNTs into Comparative analysis neat epoxy/CNT conducted microscopic, tests reveal mechanism. homogenous distribution CNTs was achieved by wrapping surfactant onto CNTs. addition caused obvious increase properties. This mechanism could attributed uniform dispersion matrix reducing free volume between polymer chains restricting chain segmental mobility, leading strong interfacial bonding efficient load transfer capability nanocomposite decreased owing effect when concentration exceeded optimal percentage 1.5%. Additionally, impart reduction wettability surface nanocomposite, contact angle uptake, which improve durability epoxy. Moreover, higher (2%) showed greater agglomeration, may cause formation plenty microcracks microvoids nanocomposite.