聚合物微结构在控制非极性介质中通过RAFT聚合制备的纳米物体的合体和热反应性能的作用
Gianmaria Gardoni1, Nicolò Manfredini1, Giulia Bagnato1
1Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy.
Langmuir : the ACS journal of surfaces and colloids
|July 12, 2023
概括
本研究探讨了用于工业应用的热响应区块共聚合物. 研究人员发现,调整solvophilic块的调整.
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
- 纳米技术纳米技术
背景情况:
- 热响应区块共聚合物随温度变化自组装成纳米物体,显示出超越生物医学用途的前景.
- 可逆添加碎片化链转移 (RAFT) 聚合是制造工业应用非极性介质中这些块共聚物的关键.
- 尽管它很重要,但solvophilic块对纳米物体特性的影响往往被忽视.
研究的目的:
- 为了研究微结构参数,特别是solvophilic块,对块共聚合物纳米物体的影响.
- 了解这些参数如何影响碳化合物溶剂中的热响应性行为和体性质.
- 建立控制纳米物体特征的方法,如云点和尺寸分布.
主要方法:
- 合成四种宏分子链转移剂 (macroCTAs),使用具有不同溶解性 (n,q) 的长联链单体.
- 扩展链的macroCTAs与二乙烯基醇) 甲基乙甲基酸盐 (p) 创建块共聚合物.
- 区块共聚合物的热响应行为和合物特性在/混合物中的表征.
主要成果:
- 自组装纳米物体的云点可以通过调整solvophilic块参数 (n,p,q) 来有效调整.
- 结合体稳定性,以每个溶性片所覆盖的面积来衡量,仅取决于n和q.
- 这允许对纳米物体尺寸分布和云点进行独立控制.
结论:
- 溶性块在区块共聚合物纳米物体的热响应性行为和体性质中发挥着关键作用.
- 溶性块的微结构参数提供了一条精确控制纳米物体特征的途径.
- 这项研究提供了一种策略,用于为石油和天然气等行业的特定工业应用量身定制块共聚合物.
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