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181285 Sigma-Aldrich

Poly(acrylic acid)

average Mv ~450,000

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Properties

Related Categories Hydrophilic Polymers, Materials Science, Poly(acrylic acid) (PAA) and Copolymers, Poly(acrylic acid) (PAA) and Solutions, Poly(acrylic acid), Polymethacrylate and Other Acrylic Polymers,
crosslinking   ~0.1 % cross-linked
mol wt   average Mv ~450,000
impurities   ≤0.5% benzene
viscosity   350-2500 cP
transition temp   Tg 106 °C

Description

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.

Packaging

5, 100, 250 g in poly bottle

Safety & Documentation

Safety Information

Symbol 
GHS08  GHS08
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
NONH for all modes of transport
WGK Germany 
3

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

Articles

Novel Inks for Direct-Write Assembly of 3-D Periodic Structures

New methods for materials fabrication at the micro- and nanoscale will drive scientific and technological advances in areas of materials science, chemistry, physics, and biology. The broad diversity ...
Prof. Jennifer A. Lewis
Material Matters 2008, 3.1, 4.
Keywords: Applications, Biomaterials, Capabilities, Coagulants, Coagulation, Deposition, Environmental, Materials Science, Methods, Photographs, Reductions, Semiconductor, Size-exclusion chromatography, Sol-gel, Support, Type

Peer-Reviewed Papers
15

References

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