基于双乳液的铁封装在双胞胎块共聚合物纳米载体中,用于控制释放
Valentina Camacho1, Johan Bermudez1, Leon Perez1
1Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia-Sede Bogotá, Bogotá, Colombia.
Journal of biomaterials applications
|October 31, 2025
概括
由聚乙烯糖醇 (PEG) 和聚乙烯 (PCL) 制成的聚合物纳米囊有效封装铁. 这些纳米载体显示持续的铁释放,表明营养物质的输送和医疗疗的潜力.
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:
- 控制释放系统对于治疗剂和营养素的有针对性输送至关重要.
- 聚合物纳米囊为药物和离子封装提供可调节的特性.
- 铁的输送对于治疗缺乏和各种医疗条件至关重要.
研究的目的:
- 为了合成和描述PEG-b-PCL的两类块共聚物 (ABCs).
- 使用PEG-b-PCL共聚合物制造含铁的纳米囊.
- 评估共聚合物组成对纳米囊特性和铁释放的影响.
主要方法:
- 通过环开聚合 (ROP) 合成PEG-b-PCL共聚合物.
- 使用FTIR,1H NMR和GPC进行表征.
- 铁装纳米囊通过双乳液溶剂蒸发 (DESE) 的配方.
- 分析粒子大小,形态,封装效率 (EE%),热行为 (DSC) 和释放动力学.
主要成果:
- 成功合成具有狭窄分散性的PEG-b-PCL共聚合物 (Đ <1.5).
- 球形纳米囊 (<500nm) 的形成,EE%的增加与共聚合物分子量相关 (最大74.4%).
- 铁的加入降低了共聚合物的结晶性,改变了热性能.
- 从纳米囊中持续释放铁的证明.
结论:
- PEG-b-PCL共聚合物是制造含铁纳米囊的合适前体.
- 纳米囊的特性,包括EE%,可以通过共聚合物分子量调整.
- 开发的纳米囊表现出持续的铁释放,显示出营养递送和治疗应用的前景.
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