Previous studies have shown that the halloysite
nanotubes can be dispersed in starch-based polymer matrix by melt-extrusion [15-17].
, a 1:1 clay mineral chemically similar to kaolinite except in its higher hydrated water content shows tubular morphology but also spherical, platy and semi rolled forms.
Preliminary development work shows that the existence of halloysite
as well as other clay minerals found in areas of the Dragon Mine resource produce ceramic proppants having appealing crush strength, permeability and specific gravity features that meet or surpass certain performance metrics of several rivaling ceramic-based products.
Applied Minerals is a leading producer of halloysite
clay from its wholly-owned Dragon Mine property inUtah.
HNTs are naturally occurring, nontoxic and have a hollow tube structure unique to halloysite
A key advantage over traditional nanoclays is that halloysite
nanotubes do not need exfoliation, which involves separating thin layers of nanoclay (like peeling an onion) with chemicals and other processing steps.
Key benefits of the halloysite
nanotubes for plastics include an increase in nanocomposite material strength and modulus with no sacrifice in ductility, improved uniformity of finished materials, reduced component weight, and improved performance at higher temperatures, says NaturalNano.
One theory of why halloysite
forms into tubes is due to shearing but another belief is that it is caused by interaction with water, which causes halloysite
sheets to roll into tubes.
Additional keywords: 2:1-2:1:1 intergrade minerals, clay content, halloysite
, kaolinite, weathering process.
the "Company") is a leading global producer of Halloysite
Clay from its wholly-owned Dragon Mine property in Utah.
4 million short tons is based upon a cut-off grade of 20% clay and represents the largest deposits of high quality feldspar, quartz, kaolin and halloysite
in the Western United States.
CRADA Aimed at Developing a Remediation Solution for Oil Contaminated Marshlands Using Dragonite[TM] Halloysite