17 下列有關polycarbophil 聚合物之敘述,何者錯誤? (A)此..-阿摩線上測驗
2F
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3F 一階國考趕快結束Fight 高三上 (2021/06/08)
Polycarbophil absorbs about ten times its own weight of water under acidic conditions, but the swelling ratio markedly increases at above pH 4.0 and reaches 70 times the initial weight under pH-neutral conditions. The swelling of polycarbophil is not affected by non-ionic osmolarity, but by ionic strength, showing a decrease with increase of ionic strength. (C) 在酸中吸水膨脹。 |
4F TMU b32310905 國二下 (2023/02/26)
根據黃建才國考用書105版的介紹,有列出以下特點: 1. 由divinyl glycol及polyacrylic acid所形成的聚合物。因為結構中有酸所以是會在小腸中溶解 ,但在胃中保持穩定。 2. 可以用於治療腹瀉 (在腸道中造成滲透壓,以吸附多餘的水分,降低腹瀉次數)。 3. 加入酒精會使其沉澱 |