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what is polyacrylic acid ?

2021-01-13

What is polyacrylic acid?

 

Polypropylene (PAA; trade name Carbomer) is a synthetic high molecular weight propylene polymer. IUPAC is named poly(1-carboxyethylene). They can be homopolymers of acrylics or cross-linked with acrylics of pentaerythritol, acrylics of sucrose, or acrylics. In aqueous solutions at neutral pH, PAAs are anionic polymers, meaning that many of the side chains of PAAs lose their protons and thus gain loading. This makes PAAs polyelectrolytes with the ability to absorb and retain water, which can swell to many times their original volume.

 

Dry PAAs are sold as white, fluffy powders and are commonly used as gels in cosmetics and personal care products. Their cosmetics role is to suspend solids in liquids, prevent emulsions from separating, and control the flow of cosmetics. The carbomer codes (910, 934, 940, 941, and 934P) indicate the molecular weight and specific composition of the polymer. In numerous applications, PAA is used in alkali metal or ammonium salts, such as sodium polyacrylate. The positively charged sodium ion is bound to the polyacrylate in dry powder form, but in an aqueous solution, the sodium ion disintegrates. This causes the gel to swell rather than organizing the polymer chains, which can absorb large amounts of water.

 

Polypropylene is a weakly anionic polyelectrolyte, and its degree of ionization depends on the pH of the solution. In the non-ionized form at low pH, PAA can bind to various non-ionic polymers (e.g., polyethylene oxide, poly-N-vinyl pyridone, polyacrylamide, and some cellulose ethers) to form hydrogen-bonded interpolymer complexes. In aqueous solutions, PAA can also form polymers with oppositely charged polymers (e.g., chitosan), surfactants, and drug molecules (e.g., streptomycin).

 

What is polyacrylic acid used for?

 

Polyacrylic acid and its derivatives are used in disposable diapers, ion exchange resins, and adhesive detergents. Detergents are usually copolymers of acrylic acid and can be used as zeolites and phosphates in detergent formulations. It is also popular as a thickening, dispersing, suspending, and emulsifying agent in pharmaceuticals, cosmetics, and coatings. Cross-linked polypropylene is also used in the processing of household products such as floor cleaners. Acrylic acid is also a major component of superabsorbent polymers (SAPs), and cross-linked polyacrylates can absorb and retain more than 100 times their own weight in liquid.PAA can deactivate the bactericide chlorhexidine gluconate.After neutralization, polyacrylic acid gels are suitable for biocompatible matrices that receive medical applications, such as skincare and dermatological treatment product gels.PAA films can be deposited on orthopedic implants to avoid corrosion. Cross-linked hydrogels of AA and gelatin are also used as medical gels with high bond strength. Recent studies have aimed to clarify the conformational changes of polymeric gels upon neutralization, light exposure, and embedding of gold nanoparticles to develop polymeric matrices that can control the rate of delivery of active substances. The FDA has authorized the use of SAPs in packaging for indirect food contact.


 polyacrylic acid


How do you dissolve polyacrylic acid?

 

PAA polymers contain a large number of carboxyl groups (-COOH). As a result, the hydrogen bonds between each chain are powerful and dissolved in organic solvents such as DMSO and NMP. First, we must consider the forces that break the hydrogen bonds of the PAA chains. Primary solvents (H2O, ethanol, etc.) are good sources of protons (H+), so these are attached to the carboxyl groups. Therefore, all carboxylic acid groups that acquire protons positively charge, indicating that hydrogen bond breakage drives the chain. Therefore, solvents for solubilizing PAA polymers are suitable for using native proton solvents, which can be searched in Google.

 

The best water treatment chemicals to use

 

Carboxylate polymers are key raw materials used in industrial water treatment such as boilers, cooling circuits, reverse osmosis plants, desalination, and sugar evaporators. These polymers are used as scale inhibitors and dispersants for insoluble solids in the water treatment industry. We produce various carboxylate polymers such as homopolymers, copolymers, terpolymers, copolymers, and polymaleic acid for scale inhibitors. These polymers are synthesized in a fully automated plant through a precisely controlled process to provide optimal inhibition. In addition to supply, our applications team guarantees the performance of each material and provides technical assistance to our customers in product application and formulation.

 

Synonyms: Polyacrylic Acid (PAA) 50%, Poly Maleic Acid (PMA), Acrylic Acid-2-Acrylamide-2-Methylpropanesulfonic Acid Copolymer (AA/AMPS), Sulfonated Polyacrylic Acid Copolymer, AA-AMPS Copolymer, Sulfonated Acrylic Acid Copolymer, Acrylic Acid Terpolymer, Primary Acrylic Acid Polymer, Acrylic Acid Homopolymer, Acrylic Acid Copolymer, Polyacrylic Acid.


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