Abstract
Nanotubular clay minerals, composed of aluminosilicate naturally structured in layers known as halloysite nanotubes (HNTs), have a significant reinforcing impact on polymer matrixes. HNTs have broad applications in biomedical applications, the medicine sector, implant alloys with corrosion protection and manipulated transportation of medicines. In polymer engineering, different research studies utilize HNTs that exhibit a beneficial enhancement in the properties of polymer-based nanocomposites. The dispersion of HNTs is improved as a result of pre-treating HNTs with acids. The HNTs’ percentage additive up to 7% shows the highest improvement of tensile strength. The degradation of the polymer can be also significantly improved by doping a low percentage of HNTs. Both the mechanical and thermal properties of polymers were remarkably improved when mixed with HNTs. The effects of HNTs on the mechanical and thermal properties of polymers, such as ultimate strength, elastic modulus, impact strength and thermal stability, are emphasized in this study.
Highlights
Halloysite Nanotubes (HNTs) are a naturally-occurring aluminosilicate (Al2 Si2 O5 (OH)4 ·2H2 O)with a predominantly hollow tubular structure mined from natural deposits [1,2,3,4,5,6,7,8]
Considerable enhancement in the mechanical properties of the composite materials was obtained and is attributed to the fact that Polyvinyl Alcohol (PVA) chains were subjected to orientation and crystallization caused by halloysite, thereby contributing to the aforesaid enhancement
halloysite nanotubes (HNTs) that the nanoparticles concentrated around the cell nucleus after penetrating through the cell wall [52]
Summary
Halloysite Nanotubes (HNTs) are a naturally-occurring aluminosilicate (Al2 Si2 O5 (OH)4 ·2H2 O). HNTs as a clay with a hollow nanocylindrical structure excavated naturally from earth deposit resources in many areas, including China, Brazil and France [4,9,10,11]. HNTs are naturally processed through weathering of minerals in Earth0 s environment and are exploited to a great extent as sorbents, nanocontainers and composite polymer matrices reinforced with nano-scale fillers [12]. HNTs byand polymers andisadditives as exfoliation is required,isand the intercalation of the HNTs additives difficult is difficult to achieve due to the spacing small basal spacing the crystal planes. The polarity ofthe thepolarity tubules of the tubules the HNTs suitable to secure generous dispersal the polymer surface showssurface that theshows.
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