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523925

Sigma-Aldrich

Poly(acrylic acid) solution

average Mw ~100,000, 35 wt. % in H2O

Synonym(s):

PAA

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About This Item

Linear Formula:
(C3H4O2)n
CAS Number:
9003-01-4
MDL number:
MFCD00084394
UNSPSC Code:
12162002
PubChem Substance ID:
24874380
NACRES:
NA.23

mol wt

average Mw ~100,000

concentration

35 wt. % in H2O

density

1.14 g/mL at 25 °C

SMILES string

OC(=O)C=C

InChI

1S/C3H4O2.Na/c1-2-3(4)5;/h2H,1H2,(H,4,5);/q;+1/p-1

InChI key

NNMHYFLPFNGQFZ-UHFFFAOYSA-M

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General description

Poly (acrylic acid) (PAA) is hygroscopic, brittle and colorless in nature with Tg at nearly 106oC. At temperatures above 200, up to 250oC, it loses water and becomes an insoluble crosslinked polymer anhydride. Solubility of dried PAA in water increases with rise in temperature. Concentrated solutions of PAA in water are thixotropic in nature.

Application

PAA is used in the preparation of nano-hydroxyapatite polyacrylic acid (Hap/PAAc) biocomposites.†Other probable applications of PAA are: to study solute diffusion in Polyvinyl alcohol/PAA copolymer hydrogels†, synthesizing poly(N-isopropylacrylamide)-block-PAA copolymer which responds to both temperature and pH stimuli†, in preparing block copolymer of oligo (methyl methacrylate)/PAA for micellar delivery of hydrophobic drugs†, and as a thickening agent for adhesives.

signalword

Danger

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

212.0 °F - closed cup

flash_point_c

100 °C - closed cup

ppe

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)

Certificates of Analysis (COA)

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T Inoue et al.
Journal of controlled release : official journal of the Controlled Release Society, 51(2-3), 221-229 (1998-08-01)
An AB block copolymer of oligo(methyl methacrylate) (oMMA) and poly(acrylic acid) (PAAc) has been synthesized. The block copolymer forms micelles in an aqueous medium, as confirmed by a fluorescence probe technique using pyrene. Doxorubicin hydrochloride was incorporated into the micelle
P L Zeeuwen et al.
The Journal of investigative dermatology, 116(5), 693-701 (2001-05-12)
Using serial analysis of gene expression on cultured human keratinocytes we found high expression levels of genes putatively involved in host protection and defense, such as proteinase inhibitors and antimicrobial proteins. One of these expressed genes was the recently discovered
Yanxia Wang et al.
International journal of pharmaceutics, 441(1-2), 170-180 (2012-12-15)
A novel galactose-decorated cross-linked micelles (cl-micelles) with ionic cores using cystamine (Cys) as a biodegradable cross-linker was prepared by using block ionomer complexes of poly(ethylene glycol)-b-poly(2-acryloxyethyl-galactose)-b-poly(acrylic acid) (PEG-b-PAEG-b-PAA) and Ca(2+) (PEG-b-PAEG-b-PAA cl-micelles/Cys). Doxorubicin (DOX) was successfully incorporated into the ionic
Imran Khimji et al.
Chemical communications (Cambridge, England), 49(13), 1306-1308 (2013-01-11)
The melting temperature of duplex DNA is much higher in polyanions than in non-ionic polymers with similar ionic strength, suggesting an additional electrostatic contribution on top of the excluded volume effect.
Daniel L Miller et al.
The Annals of thoracic surgery, 95(3), 1050-1056 (2013-01-22)
Skeletal chest wall reconstruction can be a challenge, depending on the indication, location, and health of the patient; various materials are available. Recently, biomaterials that are remodelable (bovine pericardium patch; Veritas, Synovis Life Technologies Inc, St Paul, MN) or absorbable
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