polyacrylic acid

例句：

1. 1. This polyacrylic acid is used in the production of plastics.
   这种聚丙烯酸用于生产塑料。
2. 2. The polyacrylic acid solution is effective in removing stains from clothes.
   这种聚丙烯酸溶液能有效去除衣物上的污渍。
3. 3. Polyacrylic acid is a versatile material that can be molded into various shapes.
   聚丙烯酸是一种多功能材料，可以塑形成各种形状。