环保的聚合物/纳米复合物的自组装
Georg Garnweitner1, Bernd Smarsly, Roger Assink
1Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, New Mexico 87131, USA.
Journal of the American Chemical Society
|May 8, 2003
概括
创建了热敏纳米复合材料薄膜与二氧化和N-异烯胺 (NIPAM) 水凝. 这些薄膜随着温度的变化而反向膨胀和下降,显示出智能材料应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 纳米技术 纳米技术
背景情况:
- 开发具有可调节性质的先进材料对于创新应用至关重要.
- 热敏聚合物提供独特的环境响应性.
- 纳米复合材料薄膜为整合各种材料功能提供了一个平台.
研究的目的:
- 为了合成和描述新型热敏纳米复合材料薄膜.
- 为了研究受限水凝层对聚合物行为的影响.
- 探索-水凝系统的自我组装和环境反应.
主要方法:
- 表面活性剂导向的蒸发诱导自组装 (EISA) 用于薄膜制造.
- 在现场自由基聚合N-异烯胺 (NIPAM) 和二甲基甲酸 (DM).
- 核磁共振 (NMR),热重力测量分析 (TGA) 和小角度X射线散射 (SAXS) 用于表征.
主要成果:
- 交替和水凝纳米复合材料薄膜已经成功地准备好.
- 在N-异甲胺 (NIPAM) 水凝层显示可逆的胀/脱水 (因数为2) 在32°C左右.
- 聚合物的热敏性在被限制的纳米结构中得到维持.
结论:
- 使用EISA制造了可调节膨胀行为的热敏纳米复合材料薄膜.
- 封闭的水凝层保留了它们的温度依赖性质.
- 这些发现为开发各种技术用途的响应性纳米材料打开了道路.
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