Scholarlink

<p>Additive manufacturing, also known as 3D printing, enables the fabrication of complex parts through the successive deposition of layers. Poly (lactic acid) (PLA) is one of the most widely used materials due to its biodegradability, biocompatibility, and ease of processing. However, its hydrophobic nature results in low wettability, which limits interlayer adhesion. To address this issue, the present study investigates the effects of integrated remote plasma jet treatment during 3D printing on PLA’s surface, as well as its thermal and mechanical properties. A plasma jet-aided additive manufacturing system was developed to optimize PLA surface modification during the printing process. Argon plasma was applied with peak voltages of 18&#xa0;kV and frequencies ranging from 8 to 20&#xa0;kHz. The results showed that a frequency of 12&#xa0;kHz was the most effective, reducing the contact angle by 32% and promoting the incorporation of oxygenated functional groups, as revealed by X-ray Photoelectron Spectroscopy (XPS), which showed an increase of up to 10% in the O/C ratio. An improvement in thermal stability was also observed, as confirmed by Fourier Transform Infrared Spectroscopy (FTIR) analysis, which indicated that the chemical structure of PLA remained unchanged. Finally, the treated samples did not exhibit significant alterations in mechanical properties compared to the untreated ones. This approach eliminates the need for post-processing, enhancing efficiency and expanding the applications of PLA in industrial and biomedical sectors.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Surface modification of 3D-printed PLA using an integrated remote plasma JET: in situ enhancement of wettability and functionalization without post-processing

  • 期刊论文

  • 发表日期：

    2025年12月17日

查看全文
  • Anderson Carvalho Fernandes,
  • Lais Bastos Silva Lima,
  • Marcelo Francisco Krol,
  • Matheus Henrique Lemos Oliveira,
  • Júlia Karnopp,
  • Julio César Sagás,
  • Daniela Becker

摘要

Additive manufacturing, also known as 3D printing, enables the fabrication of complex parts through the successive deposition of layers. Poly (lactic acid) (PLA) is one of the most widely used materials due to its biodegradability, biocompatibility, and ease of processing. However, its hydrophobic nature results in low wettability, which limits interlayer adhesion. To address this issue, the present study investigates the effects of integrated remote plasma jet treatment during 3D printing on PLA’s surface, as well as its thermal and mechanical properties. A plasma jet-aided additive manufacturing system was developed to optimize PLA surface modification during the printing process. Argon plasma was applied with peak voltages of 18 kV and frequencies ranging from 8 to 20 kHz. The results showed that a frequency of 12 kHz was the most effective, reducing the contact angle by 32% and promoting the incorporation of oxygenated functional groups, as revealed by X-ray Photoelectron Spectroscopy (XPS), which showed an increase of up to 10% in the O/C ratio. An improvement in thermal stability was also observed, as confirmed by Fourier Transform Infrared Spectroscopy (FTIR) analysis, which indicated that the chemical structure of PLA remained unchanged. Finally, the treated samples did not exhibit significant alterations in mechanical properties compared to the untreated ones. This approach eliminates the need for post-processing, enhancing efficiency and expanding the applications of PLA in industrial and biomedical sectors.