溶性树脂作为pH响应的保护性合体
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Updated: Sep 15, 2025
09:26
Synthesis and Characterization of Supramolecular Colloids
Published on: April 22, 2016
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Mehdi Naderi1, Kiarash Farajzadehahary1, Timo Melchin2
1POLYMAT and Department of Applied Chemistry, Faculty of Chemistry, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avenida Tolosa 72, 20018 Donostia-San Sebastián, Spain.
ACS applied materials & interfaces
|July 16, 2025
概括
这项研究引入了一个新的pH值可切换稳定剂,用于乳液聚合物,使干燥的聚合物粉末的容易隔离和再乳化. 这项创新简化了建筑和涂料应用的存储和运输.
科学领域:
- 聚合物化学 聚合物化学
- 体科学 体科学 体科学
- 材料科学 材料科学 材料科学
背景情况:
- 乳化聚合物在粘合剂,涂料和建筑材料中至关重要.
- 乳液聚合物的干燥形式提供了后勤优势,但需要有效的再乳化.
- 现有的干聚合物隔离和再分散的方法可能具有挑战性.
研究的目的:
- 为了研究一种可切换pH值的稳定剂,用于乳液聚合物.
- 为了使低玻璃过渡温度 (Tg) 的聚合物颗粒能够得到控制的凝结和分离.
- 为了成功地将聚合物重新稳定到乳液中.
主要方法:
- 低Tg (14°C) 乙乙烯酸/VeoVa10颗粒通过种子半连续乳液聚合通过高Tg溶性树脂稳定合成.
- 在pH≤3下进行乳凝结,然后进行过,干燥,研磨,并添加高作为抗凝剂.
- 通过应用能量和增加pH值,在水中恢复分离的聚合物粉末的稳定.
主要成果:
- 证明了干乳液聚合物粉末的成功隔离与完整性.
- 通过调整pH值和应用能量,将分离聚合物重新分散成稳定的乳液.
- 鉴定了含有碳素的性溶解树脂作为有效的pH值可切换稳定和颗粒保护.
结论:
- 一个新的pH可切换稳定系统允许有效地隔离干粉和重新乳化乳液聚合物.
- 使用由溶性树脂制成的硬在加工过程中保护低Tg颗粒.
- 这种方法提高了乳液聚合物的实用性,在需要干燥储存和易于重新应用的应用中.
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