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181285

Poly(acrylic acid)

average Mv ~450,000

Synonym(s):

PAA

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About This Item

Linear Formula:
(C3H4O2)n
CAS Number:
9003-01-4
UNSPSC Code:
12162002
PubChem Substance ID:
24850924
NACRES:
NA.23
MDL number:
MFCD00084394
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crosslinking

~0.1 % cross-linked

Quality Segment

200

mol wt

average Mv ~450,000

viscosity

350-2500 cP

transition temp

Tg 106 °C

SMILES string

[Na+].[O-]C(=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

General description

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

Application

Poly (acrylic acid) (PAA)/Poly methyl methacrylate copolymers are used for drug delivery.
Other applications may include:
  • to study solute diffusion in Polyvinyl alcohol/PAA copolymer hydrogel
  • 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
  • as thickening agent for adhesives.

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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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