181285

Poly(acrylic acid)

average M_v ~450,000

• Szinonimák: PAA
• Lineáris képlet: (C₃H₄O₂)_n
• CAS-szám: 9003-01-4
• MDL-szám: MFCD00084394
• UNSPSC kód: 12162002
• PubChem Substance ID: 24850924
• NACRES: NA.23

Tulajdonságok

• keresztkötés: ~0.1 % cross-linked
• Minőségi szint: 200
• molekulatömeg: average M_v ~450,000
• viszkozitás: 350-2500 cP
• átmeneti hőmérséklet: T_g 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
• Nemzetközi kémiai azonosító kulcs: NNMHYFLPFNGQFZ-UHFFFAOYSA-M

Leírás

Általános leírás

Poly (acrylic acid) (PAA) is hygroscopic, brittle and colorless in nature with T_g at nearly 106^oC. At temperatures above 200 to 250^oC, 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.

Alkalmazás

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.

Biztonsági adatok

• Tárolási osztály kódja: 11 - Combustible Solids
• WGK: WGK 1
• Lobbanási pont (F): Not applicable
• Lobbanási pont (C): Not applicable