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聚乙二醇是分子量范围广宽并具有不同熔点的亲水性聚合体。它们的熔点随着分子量的增加而增加,其中液体和半固体者具吸湿性,而吸湿性又随着分子量的增加而大大减少。聚乙二醇除了广泛用作栓剂和软膏基质及作为直接压制片剂的粘合剂外,也用于薄膜包衣,所用的量为其25～50%醇溶液,或
Polyethylene glycols are hydrophilic polymers that have a wide range of molecular weights and have different melting points. Their melting points increase with the increase of molecular weight, in which liquid and semi-solid are hygroscopic, and hygroscopicity decreases with the increase of molecular weight. In addition to its widespread use as a suppository and ointment base and as a direct compression tablet adhesive, polyethylene glycol is also used in film coatings in amounts of 25-50% alcohol solution or