Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Self-healing Properties of PLA Bilayer Film: Poly(urea-formaldehyde) Microcapsules Containing Linseed Oil

아마인유가 포함된 마이크로캡슐을 이용한 자가치유 PLA 필름에 대한 연구

  • Lee, Jae Seung (Department of Fiber System Engineering, Dankook University) ;
  • Park, Seong Eun (Department of Fiber System Engineering, Dankook University) ;
  • Kim, Se Hyun (Department of Fiber System Engineering, Dankook University) ;
  • Lee, Won Jun (Department of Fiber System Engineering, Dankook University)
  • 이재승 (단국대학교 파이버시스템공학과) ;
  • 박성은 (단국대학교 파이버시스템공학과) ;
  • 김세현 (단국대학교 파이버시스템공학과) ;
  • 이원준 (단국대학교 파이버시스템공학과)
  • Received : 2022.02.08
  • Accepted : 2022.04.23
  • Published : 2022.04.30
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Abstract

The development of bio-plastics (i.e., biodegradable and bio-based plastics) is an important way of reducing fossil-based plastic waste. However, the degradable properties that make bio-plastic useful also provide it with significant resistance to commercial use, especially with respect to catastrophic mechanical failure in response to external stimulus. This study develops a functional biodegradable film with bi-layers (PBFs) to achieve both biodegradable features and mechanical stability by incorporating self-healable microcapsules. To improve the scratch-resistance, microcapsules comprised of a poly urea-formaldehyde (PUF) shell and a linseed oil (LO) core are infiltrated to the protective poly dimethylsiloxane (PDMS) layer. When external pressure causes damage to the microcapsule, internal linseed oil (LO) flows out and crosslinks the biodegradable polylactic acid (PLA) film in the presence of oxygen. Several parameters, such as capsule size, content, and curing temperature, are examined. In summary, the embedding of 5 wt% self-healing microcapsules yielded a healing efficiency of 94% at 70 ℃ in 20 min.

Keywords

Acknowledgement

이 성과는 2021년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. NRF-2021R1C1C1008148).

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