在水中制备的对离子敏感的"异热"反应性聚合物
Johannes Pall Magnusson1, Adnan Khan, George Pasparakis
1School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK.
Journal of the American Chemical Society
|July 25, 2008
概括
响应性聚合物在水中合成,显示可调节的温度和依赖盐的行为. 一个混合区块共聚合物形成了微粒,在添加特定盐后释放药物.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
背景情况:
- 开发响应刺激的聚合物对于先进的应用至关重要.
- 在各种条件下控制聚合物在水溶液中的行为仍然是一个挑战.
- 对离子敏感的聚合物为向药物输送和传感提供了潜在的潜力.
研究的目的:
- 在完全水的条件下合成离子敏感的聚合物.
- 调查共纳米素含量和序列对聚合物溶液行为的影响.
- 探索混合区块共聚物的自我组装和药物释放能力.
主要方法:
- 在水性介质中进行受控的基质聚合.
- 调共纳米的组成和序列.
- 使用不同温度和霍夫迈斯特系列盐的云点测量.
- 细菌形成和药物释放动态的表征.
主要成果:
- 聚合物表现出显著的温度和依赖盐的溶液行为.
- 云点随着霍夫迈斯特盐的添加而变化 +/-40°C.
- 一个混合块共聚合物形成了稳定的状组件.
- 这些组件表明,在添加硫酸 (Na2SO4) 后,封装模型药物的突发释放.
结论:
- 对离子敏感的聚合物的水性合成是可行的,使用可控的激素聚合.
- 聚合物溶液的行为可以通过共纳米含量和序列精确调整.
- 混合区块共聚合物可以形成响应式组件,用于可控药物输送应用.
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