Dip coating assisted polylactic acid deposition on steel surface: Film thickness affected by drag force and gravity

Hsu Wei Fang, Kuo Yen Li, Tai Lun Su, Thomas Chun Kuang Yang, Ji Sheng Chang, Po Liang Lin, Wen Chung Chang

研究成果: 雜誌貢獻文章同行評審

33 引文 斯高帕斯(Scopus)

摘要

Dip coating process has the potential of providing an easier and economical way to form a polylactic acid (PLA) layer on metal surface for various applications. The effects of dip coating operating parameters such as the withdrawal velocity, concentration, and viscosity of the solution on the film thickness were investigated in this study. Our experimental results show that the increase of withdrawal velocity leads to the increase of PLA film thickness at the relatively low withdrawal velocity regime. However, at the relatively high withdrawal velocity regime of the dip coating process, it was observed that the PLA layer thickness starts to decrease with increasing withdrawal velocity. It is suggested that the competition of drag force and gravity during the dip-coating process dominates PLA film formation. A mechanism was proposed to explain this special behavior which was never observed in the dip coating process.
原文英語
頁(從 - 到)3739-3741
頁數3
期刊Materials Letters
62
發行號21-22
DOIs
出版狀態已發佈 - 八月 15 2008
對外發佈

ASJC Scopus subject areas

  • 材料科學(全部)
  • 凝聚態物理學
  • 材料力學
  • 機械工業

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