Laser-assisted surface processing for functionalization of polymers on micro- and nano-scale
Laser-assisted surface processing for functionalization of polymers on micro- and nano-scale
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DOI：
10.1007/s00542-019-04633-7
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发表时间：
2020-04
期刊：
影响因子：
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通讯作者：
Jan-Hendric Rakebrandt-;Yijing Zheng;H. Besser;T. Scharnweber;H. Seifert;Wilhelm Pfleging
中科院分区：
文献类型：
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作者：
Jan-Hendric Rakebrandt-;Yijing Zheng;H. Besser;T. Scharnweber;H. Seifert;Wilhelm Pfleging
功能化聚合物的快速制造为生物和医学领域的许多应用提供了一种具有成本效益的方法。激光成型技术与热塑性塑料的快速制造工艺不同。在这里，我们报告直接紫外激光烧蚀聚苯乙烯和聚二甲基硅氧烷，以控制润湿性和生物相容性。为此，接触角测量和L929细胞生长实验作为激光和工艺参数的函数进行。这项工作还描述了激光辅助热压印的潜力，该技术已被引入到聚合物上复制预制的微米和纳米尺寸的结构，证明它是一种具有成本效益和灵活的表面功能化方法。因此，预制的激光诱导的周期性表面结构已被制造为模具插入使用超快激光辐射烧蚀阈值附近。这些模具嵌件也可以由镍、硅或玻璃制成，证明激光辅助热压是热塑性塑料功能化的多功能工具，并满足现代制造业在质量和生产灵活性方面的要求。
Rapid manufacturing of functionalized polymers enable a cost-efficient method for many applications in the biological, and medical sector. Laser structuring techniques differ for fast fabrication processes of thermoplastics. Here we report on direct UV laser ablation of polystyrene and polydimethylsiloxane to control wettability and bio-compatibility. For this purpose contact angle measurements and L929 cell growth experiments were performed as function of laser and process parameters. This work also describes the potential of laser-assisted hot embossing which has been introduced to replicate pre-fabricated micro- and nano-sized structures onto polymers proving it to be a cost-efficient and flexible method for surface functionalization. Therefore, pre-fabricated laser-induced periodic surface structures have been manufactured as mould inserts using ultrafast laser radiation near the ablation threshold. These mould inserts can also be made of nickel, silicon or glass proving laser-assisted hot embossing to be a versatile tool for the functionalization of thermoplastics and meet the requirements for modern manufacturing with regard to quality and production flexibility.