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Updated: Jun 3, 2025

Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape

Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape

Published on: January 8, 2014

基于固态混合制造的多重形状记忆聚合材料的制造策略.

Salim-Ramy Merouani^1,2, Roman Kulagin³, Vladislav Bondarenko⁴

¹The Bio-Med-Chem Doctoral School of the University of Lodz and Lodz Institutes of the Polish Academy of Sciences, Banacha 12/16, Lodz 90-237, Poland.

ACS macro letters

|January 12, 2025

概括

研究人员开发了一种创新的方法,通过将固态混合不混合的聚合物来制造先进的形状记忆聚合物 (SMP). 这种技术提高了形状记忆特性和机械性能,提供可调节的过渡温度.

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Published on: April 16, 2018

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

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Last Updated: Jun 3, 2025

Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape

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Published on: January 8, 2014

Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning

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科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
纳米技术纳米技术

背景情况:

多重形状记忆聚合物 (SMP) 通常由具有特定形态的不可混合混合物或具有纳米级异质性的可混合混合物制成.
现有的方法在实现最佳均性和性能方面面临挑战.

研究的目的:

提出一种新的策略,通过对不混合的聚合物进行均的固态混合来制造多重SMP.
研究纳米级混合对形状记忆和机械性能的影响.

主要方法:

利用高压扭转 (HPT) 来处理固态不混合的聚合物混合物.
通过施加高压和剪切变形,实现纳米级均性 (40-95nm).
选择聚烯 (PP) 和聚烯 (PS) 作为模拟不混合的聚合物.

主要成果:

证明了不混合的聚合物的同质混合,直到纳米尺度.
与传统方法相比,观察到形状记忆效果和机械性能的显著改善.
经HPT处理的50% PP/50% PS混合物表现出出色的三重形状记忆效应,具有高形状固定 (∼94-95%) 和恢复 (∼85-95%).

结论:

在高压和剪切下进行固态混合是创建先进多重SMP的有效方法.
在纳米尺度上从不混合到混合混合物的过渡增强了材料的特性.
这种方法提供可调节的过渡温度和优越的性能,用于形状记忆应用.