通过双光子聚合制造制成的非常高面积比的聚合物微柱
Keynaz Kamranikia1,2, Sébastien Dominici1,2, Marc Keller1,2
1Institut de Science des Matériaux de Mulhouse (IS2M), CNRS-UMR 7361, Université de Haute-Alsace, 15 rue Jean Starcky, 68057 Mulhouse, France.
Micromachines
|August 26, 2023
概括
研究人员使用双光子聚合 (TPP) 开发了高面积比 (HAR) 聚合物微柱. 优化的制造参数成功克服了毛细血管力,防止了崩,并实现了高达80的HAR.
科学领域:
- 材料科学 材料科学 材料科学
- 微型制造业的微型制造
- 聚合物化学 聚合物化学
背景情况:
- 高面比 (HAR) 聚合物微支柱对于药物输送和微电机械系统 (MEMS) 等应用至关重要.
- 传统的成型技术面临的挑战是拆解复杂的HAR微结构.
- 双光子聚合 (TPP) 是3D微制造的一种多功能方法,但在开发过程中由于毛细管力导致的微柱体崩而扎.
研究的目的:
- 介绍一种使用双光子聚合 (TPP) 制造非常高比例 (HAR) 聚合物微柱子的方法.
- 为了克服在TPP制造过程中由毛细血管力引起的微柱体收缩和崩的常见问题.
主要方法:
- 利用双光子聚合 (TPP) 制造聚合物微支柱.
- 优化基板表面的修改,以增强粘附性和减少毛细血管的影响.
- 调整了TPP制造参数,包括激光功率,曝光时间和柱子之间的距离.
- 研究了柱子长度对结构完整性的影响.
主要成果:
- 成功制造出具有非常高的比例 (HAR) 的聚合物微支柱,最高可达 80.
- 通过优化制造参数和表面处理来有效缓解毛细血管力.
- 实现了稳定,非崩的微柱状结构,以前无法通过标准的TPP方法实现.
结论:
- 两光子聚合 (TPP) 可以优化,以产生超高面积比 (HAR) 聚合物微柱.
- 仔细控制制造参数和表面状况对于克服毛细血管诱导的崩至关重要.
- 这一进步使HAR微结构可靠地制造,用于先进的应用.
相关概念视频
01:03Step-Growth Polymerization: Overview
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
Many natural and synthetic polymers are produced by...
01:08Molecular Weight of Step-Growth Polymers
Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...