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Sigma-Aldrich

Polyaniline (emeraldine salt)

average Mw >15,000, powder (Infusible), 3-100 μm particle size

Synonym(s):

PANI

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About This Item

MDL number:
MFCD00284320
UNSPSC Code:
12352103
NACRES:
NA.23
Pricing and availability is not currently available.

form

powder (Infusible)

Quality Level

100

mol wt

average Mw >15,000

surface area

5-20 m2/g

particle size

3-100 μm

conductivity

2-4 S/cm (compacted powder)

mp

>300 °C (lit.)

density

1.36 g/mL at 25 °C

bulk density

18.8 lb/cu.ft

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General description

Form of polyaniline complexed (doped) with proprietary organic sulfonic acid. Polyaniline is environmentally stable and with tunable conductivity.3 Synthesis of polyaniline (PANI) emeraldine salt by chemical oxidation has been reported. It was observed that sulfonated dyes chemically interact with the charged backbone of PANI. PANI selectively adsorbs the sulfonated dye. Spectral, diffraction and conductivity measurements of the polymer has been reported in the same study. 1
Inherently conductive polymer.
Stable at 100 °C and at 200 °C for short periods. Dispersed particles tend to reaggregrate in molded articles forming conductive pathways. Acidic salt of an organic acid, incompatible with most bases.
Form of polyaniline complexed (doped) with proprietary organic sulfonic acid

Application

A variety of nanomaterials like silver nanoparticles (AgNPs), graphene oxide(GO), aluminum oxide(α-Al2O3), carbon fiber and graphite can be potentially used in conjunction with PANI for the development of translational medicine,[1] supercapacitors,[2] triboelectric nanogenerators,[3] and other energy storage applications.[4]
Additive in polymer blends and liquid dispersions for electromagnetic shielding, charge dissipation, electrodes, batteries and sensors. Polyaniline may be used for linear actuator applications. 1

Packaging

5 g packaged in glass bottles; 25 g packaged in poly bottles

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
STBL3433
SDBB0348
STBK6678
STBK9771
STBK3509

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Electric impulse spring-assisted contact separation mode triboelectric nanogenerator fabricated from polyaniline emeraldine salt and woven carbon fibers.
Cheedarala RK, et al.
Nano Energy, 53(43), 362-372 (2018)
Tuning electrical transport mechanism of polyaniline-graphene oxide quantum dots nanocomposites for potential electronic device applications.
Mombru? D, et al.
The Journal of Physical Chemistry C, 120(43), 25117-25123 (2016)
Analysis of Superfine-Resolution Printing of Polyaniline and Silver Microstructures for Electronic Applications.
Yadav VKS, et al.
IEEE Transactions on Components and Packaging Technologies, 8(9), 1678-1685 (2018)
Andrés Felipe Cruz-Pacheco et al.
Polymers, 12(5) (2020-05-23)
Polyaniline (PANI) has recently gained great attention due to its outstanding electrical properties and ease of processability; these characteristics make it ideal for the manufacturing of polymer blends. In this study, the processing and piezoresistive characterization of polymer composites resulting
AC Conduction in Polyaniline Emeraldine Salt-Graphite Pellets.
Frontiers of Composite Materials II, 923, 66-71 (2018)

Questions

1–2 of 2 Questions  

  1. 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

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  2. 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

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