可扩展和统一的长度可调节的生物降解块共聚物纳米纤维,通过生物聚合诱导结晶驱动自组装
Charlotte E Ellis1, J Diego Garcia-Hernandez1, Ian Manners1,2
1Department of Chemistry, University of Victoria, Victoria BC V8P 5C2, Canada.
Journal of the American Chemical Society
|October 28, 2022
概括
这项研究介绍了聚合诱导结晶驱动自组装 (PI-CDSA) 一种用于制造可生物降解纳米纤维的单方法. 这种可扩展的工艺显著增加了用于纳米医学应用的精确定义的纳米纤维的度限制.
科学领域:
- 聚合物化学
- 材料科学
- 纳米技术
背景情况:
- 统一的1D块共聚合物 (BCP) 纳米纤维由于可调节性质而具有价值.
- 像活晶驱动自组装 (CDSA) 这样的传统方法涉及多步骤过程和低度,阻碍了可扩展性.
- 开发有效,可扩展的BCP纳米纤维合成方法对于更广泛的应用至关重要.
研究的目的:
- 开发BCP纳米纤维的一合成和自组装方法.
- 为了克服传统CDSA的度限制.
- 为纳米医学生产可扩展,定义良好的,可生物降解的纳米纤维.
主要方法:
- 已证明聚合诱导的CDSA (PI-CDSA) 用于合成和自组装PEG-b-PFTMC块共聚物.
- 在单工艺中达到高BCP度 (高达20%).
- 通过活体PI-CDSA控制纳米纤维的长度和分散性.
主要成果:
- 成功生产了高达20%重量的聚乙烯糖醇 (PEG) 冠和聚二甲基碳酸 (PFTMC) 核心的可生物降解纳米纤维.
- 实现了1D PEG-b-PFTMC纳米纤维的可扩展生产,其分散度低 (Lw/Ln = 1.08-1.20),长度可控制 (100-660 nm),重量可达10%.
- 确定PFTMC同聚合物杂质在促进纳米纤维形成中的关键作用.
结论:
- PI-CDSA提供了一个可扩展和高效的生物降解纳米纤维路线,克服了传统CDSA的局限性.
- 这种方法可以在工业相关的度和长度下生产明确的纳米纤维.
- 这些发现为使用可生物降解的纳米材料在纳米医学中的先进应用铺平了道路.
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