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克服传统溶剂交换方法的局限性:通过平衡-纳米沉 (ENP) 实现单分散非平衡聚合物微粒

Daniel J Fesenmeier¹, Elliot S Cooper¹, You-Yeon Won²

¹Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN 47907, USA.

Journal of colloid and interface science

|February 8, 2024

概括

新的平衡-纳米沉 (ENP) 方法创造了具有低分散性的均块共聚合物微粒,优于控制微粒形成的常规溶剂交换技术.

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:

传统的溶剂交换方法难以控制块共聚合物微粒的非平衡性质.
形成条件显著影响微粒大小和分散性,特别是对于疏水性和刚性块共聚合物.

研究的目的:

引入和验证平衡-纳米沉 (ENP) 方法,以形成块共聚合物微粒.
与传统的溶剂交换相比,为了证明ENP能够减少分散的能力.
为了展示ENP在调整微粒大小属性的实用性.

主要方法:

使用ENP和常规溶剂交换形成块共聚合物微粒.
使用动态光散射 (DLS) 进行微粒大小属性的表征.
计算建模用于预测两种方法的微粒大小分布.

主要成果:

ENP产生了低分散度的非平衡,低于DLS的多分散度指数 (PDI) 截止值.
传统的溶剂交换导致了显著更高的分散.
与传统方法不同,ENP证明了最终小尺寸属性的可调性.

结论:

在生产单分散,非平衡的聚合物微粒方面,ENP方法是有效的.
欧洲邻近政策提供了对菌形成条件和最终性质的优越控制.
建模结果支持ENP在创建单分散菌根分散的有效性.

关键词:

区块共聚合物微粒.平衡-纳米沉的情况动力结的菌体非平衡的微粒.聚乙烯 (聚乙烯) 聚乙烯 (聚乙烯) 聚乙烯 (聚乙烯) 聚乙烯 (聚乙烯)解决方案交易所解决方案交易所

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