制备微囊 使用聚二甲基烯酸乙烯基甲酸) - -
Viktor Kallebäck1,2, Csilla György3, Gustav Eriksson2
1Department of Sustainable Material Systems, RISE Research Institutes of Sweden, 431 53 Mölndal, Sweden.
Langmuir : the ACS journal of surfaces and colloids
|December 24, 2025
概括
一种新型的聚二甲基烯酸乙基甲酸-聚甲基酸 (PDMA-PBzMA) 双块共聚物有效地稳定了各种微囊配方. 这种在有机阶段溶解的两稳定剂提高了配方效率,并使控制释放应用成为可能.
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
- 体科学 体科学 体科学
背景情况:
- 传统的微囊稳定依赖于连续相中的多余水溶性聚合物或表面活性剂.
- 这种过量的稳定剂降低了配方效率,并可能使下游加工复杂化.
研究的目的:
- 调查聚二甲基甲酸-聚甲酸 (PDMA-PBzMA) 双块共聚合物的有效性,作为甲烯基微囊的稳定剂.
- 探索使用这种新型稳定剂制备具有多种形态的微囊.
- 评估从PDMA-PBzMA稳定微囊中封装的活性剂的释放特性.
主要方法:
- 使用PDMA-PBzMA双块共聚合物溶解在有机阶段制备微囊.
- 合成的聚甲酸 (PBzMA) 和聚甲酸 (PMMA) 微囊.
- 研究了三种不同的微囊形态:单质,油芯和水芯 (w1/o/w2).
- 从PBzMA微囊中评估了合体稳定性,外完整性和烯释放动力学.
主要成果:
- PDMA-PBzMA使得PBzMA和PMMA微囊的制备成为可能,具有出色的体稳定性和外完整性.
- 实现了单立体,油芯和水芯微囊形态.
- 在PBzMA微囊中,封装的烯释放速度异常缓慢,扩散率约为1 × 10^-20 m^2 s^-1.
- 确定PBzMA外是限制释放率的主要因素.
结论:
- PDMA-PBzMA双块共聚合物是微封装的多功能和高效稳定剂.
- 这种方法最大限度地提高了配方效率,在连续阶段最大限度地减少了稳定剂.
- 调整微囊形态和控制释放动力学的能力突显了先进应用的潜力,特别是当通过聚合诱导自组装 (PISA) 制备时.
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