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685445

Halloysite nanoclay

Name: Halloysite nanoclay
Brand: ALDRICH

Synonym(s):

Kaolin clay

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About This Item

Linear Formula:

Al₂Si₂O₅(OH)₄ · 2 H₂O

CAS Number:

1332-58-7

Molecular Weight:

294.19

NACRES:

NA.23

PubChem Substance ID:

329760969

UNSPSC Code:

12162002

EC Number:

310-194-1

MDL number:

MFCD11045913

Form:

nanopowder

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Properties

form

nanopowder

Quality Level

100

diam. × L

30-70 nm × 1-3 μm , nanotube

surface area

64 m²/g

color

75-96, Hunter Brightness

refractive index

n20/D 1.54

pore size

1.26-1.34 mL/g pore volume

capacity

8.0 meq/g cation exchange capacity

density

2.53 (true specific gravity)

SMILES string

O.O.O[Si](O)(O[Al]=O)O[Si](O)(O)O[Al]=O

InChI

1S/2Al.H4O7Si2.2H2O.2O/c;;1-8(2,3)7-9(4,5)6;;;;/h;;1-2,4-5H;2*1H2;;/q2*+1;-2;;;;

InChI key

HEFIDAICLOZRRO-UHFFFAOYSA-N

Description

General description

Halloysite nanoclay has a tube like morphology. It shows low electrical, thermal conductivity and strong hydrogen interactions, on account of which the inner hydroxyl groups show greater stability than the surface hydroxyl groups in halloysite. The loss of hole water occurs at nearly 300 °C.
Similar to montmorillonite, halloysite consists of two layers of aluminosilicate in 1:1 Al:Si ratio. Significant improvements in thermal, mechanical properties have been reported on addition of halloysite nanotubes in polymer composites.

Application

Halloysite is frequently used as a reinforcement in various nanocomposites, some of which are listed here:
Isotactic propylene-halloysite nanocomposites.
Alloy composites by electroless/ autocatalytic deposition.
Poly(butylene terephthalate) (PBT) composites.
Zinc–halloysite nanotube (HNT) composite coatings.
Halloysite nanotube–hydroxyapatite–hyaluronic acid films.
Halloysite combined with polyamide, polypropylene, poly(ε-caprolactone) and fluroelastomers.
Its tube like morphology, high aspect ratio, and low percolation enables interesting applications as reinforcements in nanocomposites.

Legal Information

Product of Applied Minerals, Inc. Customers may obtain additional technical support and purchase commercial quantities at appliedminerals.com

Storage Class

11 - Combustible Solids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Electrophoretic deposition of composite halloysite nanotube?hydroxyapatite?hyaluronic acid films

Deen I and Zhitomirsky I

J. Alloy Compounds, 586(1), S531-S534 (2014)

Effects of filler type on the nonisothermal crystallization kinetics of poly(butylene terephthalate) (PBT) composites

Oburo?lu N, et al.

Journal of Applied Polymer Science, 123(1), 77-91 (2012)

Joussein E. et al.

Clay Minerals, 40, 383-383 (2005)

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Global Trade Item Number

SKU	GTIN
685445-100G	04061832759005
685445-500G	04061832759012