Patterned Surface Energy in Elastomeric Molds as a Generalized Approach to Polymer Particle Fabrication,ACS Applied Polymer Materials

当前位置： X-MOL 学术 › ACS Appl. Polym. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Patterned Surface Energy in Elastomeric Molds as a Generalized Approach to Polymer Particle Fabrication
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-01-14 , DOI: 10.1021/acsapm.9b01109
Samuel D. Oberdick _{1,

2} , Gary Zabow ₁

Affiliation

We present a generic fabrication scheme to produce polymer microparticles with engineerable, complex shapes. The polymer particles are made from polyethylene glycol based hydrogels using a poly(dimethylsiloxane) (PDMS) molding technique. A simple surface treatment is used to pattern the surface energy of the PDMS molds, engendering the recessed wells in the molds with a higher surface energy than that of the surface. The contrast in surface energy causes hydrogel precursor to wet only the inside of the molds, creating isolated particles after curing with UV light. This eliminates the formation of an interconnecting “scum” layer and allows for fabrication of well-defined, independent particles. We discuss resolution limits for the approach and present a simple strategy for releasing the particles. Finally, to show how the fabrication technique is inherently compatible with further particle modifications, we also demonstrate magnetic functionalization of particles.

中文翻译：

弹性体模具中带图案的表面能作为聚合物粒子制造的通用方法

我们提出了一种通用的制造方案，以生产具有可工程化，复杂形状的聚合物微粒。所述聚合物颗粒是使用聚（二甲基硅氧烷）（PDMS）成型技术由基于聚乙二醇的水凝胶制成的。简单的表面处理用于对PDMS模具的表面能进行构图，从而使模具中的凹陷孔具有比表面更高的表面能。表面能的反差导致水凝胶前体仅润湿模具内部，在用紫外线固化后产生孤立的颗粒。这消除了相互连接的“浮渣”层的形成，并允许制造轮廓分明的独立颗粒。我们讨论了该方法的分辨率极限，并提出了释放颗粒的简单策略。最后，

更新日期：2020-01-15

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11