ポリアクリル酸ナトリウム

用途ポリアクリル酸Naの化粧品以外の主な用途としては食品 増粘安定剤や品質改良剤として食品に用いられています。医薬品 賦形、湿潤調整、粘稠、粘着・粘着増強、基剤目的の医薬品添加剤として経口剤、外用剤、歯科外用剤および口中用剤などに用いられています。

用途増粘剤、凝集剤(沈降促進剤)、バインダー。

用途増粘剤、凝集剤(清澄剤)。

説明Sodium polyacrylate, also known as waterlock, is a sodium salt of poly acrylic acid with the chemical formula [-CH2-CH(COONa)-]n and broad application in consumer products. It has the ability to absorb as much as 200 to 300 times its mass in water. Sodium polyacrylate is anionic polyelectrolytes with negatively charged carboxylic groups in the main chain. While sodium neutralized poly acrylic acids are the most common form used in industry, there are also other salts available including potassium, lithium and ammonium.

使用sodium polyacrylate is a suspending agent, stabilizer, and emulsifier.

一般的な説明Poly(acrylic acid sodium salt) is a hydrophilic polymer, which can find wide applications in the production of consumer productslike diapers, because of its ability to absorb many more times its mass in water.

純化方法Commercial polyacrylamide is first neutralised with an aqueous solution of NaOH, and the polymer is precipitated with acetone. The precipitate is redissolved in a small amount of water and freeze-dried. The polymer is then repeatedly washed with EtOH and water to remove traces of low-molecular-weight material, and finally dried in vacuum at 60o [Vink J Chem Soc, Faraday Trans 1 75 1207 1979]. It has also been dialysed overnight against distilled water, then freeze-dried. Sodium poly( -L-glutamate). Wash it with acetone, dry it in a vacuum, dissolve it in water and precipitate it with isopropanol at 5o. Impurities and low-molecular-weight fractions are removed by dialysis of the aqueous solution for 50hours, followed by ultrafiltration