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682659

Sigma-Aldrich

Nanoclay, hydrophilic bentonite

Synonym(s):

Nanomer® PGV, Nanomer® clay, Montmorillinite clay, bentonite

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500 G
$91.40

$91.40


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500 G
$91.40

About This Item

CAS Number:
EC Number:
MDL number:
UNSPSC Code:
12352100
NACRES:
NA.23

$91.40


In StockDetails


Request a Bulk Order

form

powder

Quality Level

particle size

≤25 μm

SMILES string

[Si](=O)=O.[Si](=O)=O.[Si](=O)=O.[Si](=O)=O.[Al]21O[Al](O2)O1.O

InChI key

KARVSHNNUWMXFO-UHFFFAOYSA-N

Application

For representative application data and nanocomposite processing methods see datasheet G105.
Untreated (no organic modification) hydrophilic clay for dispersion in water-based polymers and coatings
  • Rheology control
  • Increase barrier
  • Enhance chemical resistance

Legal Information

Nanomer® clays are products of Nanocor Corporation
Product of Nanocor®, Inc.
Nanomer is a registered trademark of Amcol International Corporation

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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Certificates of Analysis (COA)

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Zoleikha Hajizadeh et al.
Scientific reports, 10(1), 11671-11671 (2020-07-17)
Geopolymers as aluminosilicate inorganic polymers and eco-friendly building materials which can be used as substrate for different kinds of composite. In this research, according to the fabrication of geopolymer based on bentonite as a substrate and embedment of NiFe2O4 nanoparticles
C D Wu et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 67(1), 152-158 (2012-11-07)
The single-solute and bisolute sorption behaviour of phenol and trichloroethylene, two organic compounds with different structures, onto cetyltrimethylammonium bromide (CTAB)-montmorillonite was studied. The monolayer Langmuir model (MLM) and empirical Freundlich model (EFM) were applied to the single-solute sorption of phenol
Hanzhong Jia et al.
Environmental technology, 34(1-4), 25-33 (2013-03-28)
To mitigate the aggregation and enhance the reactivity of nanosized zero-valent iron (nZVI), montmorillonite is employed as a template-supporting matrix to prepare nZVI through two different pathways: heterogeneous nucleation and homogeneous nucleation processes. Dispersed sub-nanosized ZVI clusters with an average
T Corrales et al.
Biomacromolecules, 13(12), 4247-4256 (2012-11-17)
A triblock copolymer based on poly(ε-caprolactone) (PCL) and 2-(N,N-diethylamino)ethyl methacrylate (DEAEMA)/2-(methyl-7-nitrobenzofurazan)amino ethyl acrylate (NBD-NAcri), was synthesized via atom transfer radical polymerization (ATRP). The corresponding chlorohydrated copolymer, named as PCL-b-DEAEMA, was prepared and anchored via cationic exchange on montmorillonite (MMT) surface.
Laurent J Michot et al.
Langmuir : the ACS journal of surfaces and colloids, 29(10), 3500-3510 (2013-02-21)
The coagulation of sodium montmorillonite by inorganic salts (NaNO3, Ca(NO3)2 and La(NO3)3) was studied by combining classical turbidity measurements with wide-angle-X-ray scattering (WAXS), small-angle-X-ray scattering (SAXS), and transmission X-ray microscopy (TXM). Using size-selected samples, such a combination, associated with an

Articles

Nanoclays are clay minerals optimized for use in clay nanocomposites– multi-functional material systems with several property enhancements targeted for a particular application.

Nanoclays like montmorillonite and bentonite are used in polymer-clay nanocomposites, rheology modifiers, and drug delivery carriers.

We have discussed shortly the applications of 1:1 and 2:1 phyllosilicate material in membrane technology, as well as the basic geometric understanding of their layered structures.

Questions

1–3 of 3 Questions  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  3. Hi, I am choosing two types of nanoclay for my big scale formulation studies in research. May you please outline the main differences between Bentonite Nanoclay and Surfaced Modified Nanoclay? I could not find clear information from online.

    1 answer
    1. The difference between the nanoclays is the formulation. Product 682659 is the unmodified nano clay. The surface-modified nanoclays each contain a similar base clay.

      The surface-modified products have different functionalities:
      Product 682632 contains 15-35 wt. % octadecylamine, 0.5-5 wt. % aminopropyltriethoxysilane
      Product 682624 contains 35-45 wt. % dimethyl dialkyl (C14-C18) amine
      Product 682608 contains 25-30 wt. % trimethyl stearyl ammonium

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