Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Cold Plasma Treatment Effects on the Physicochemical and Biodegradable Properties of a Corn Biomass-containing Polyester Film

옥수수 바이오매스를 함유한 폴리에스터 필름의 물리 화학적 특성과 생분해 특성에 대한 콜드 플라즈마 처리의 영향

  • Song, Ah Young (Department of Food Science and Technology, Seoul Women's University) ;
  • Oh, Yoon Ah (Department of Food Science and Technology, Seoul Women's University) ;
  • Oh, Se Jun (CAE Solution Team, Altsoft Inc.) ;
  • Min, Sea Cheol (Department of Food Science and Technology, Seoul Women's University)
  • 송아영 (서울여자대학교 식품공학과) ;
  • 오윤아 (서울여자대학교 식품공학과) ;
  • 오세준 ((주)알트소프트 CAE Solution Team) ;
  • 민세철 (서울여자대학교 식품공학과)
  • Received : 2015.01.14
  • Accepted : 2015.02.03
  • Published : 2015.04.30
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Abstract

The effects of cold plasma (CP) treatments on the physicochemical and biodegradable properties of a corn biomass-containing polyester (CBPE) film were studied. The CBPE film was treated with CP generated by $N_2$, $O_2$, He, Ar, or dry air at 400-900 W and 667 Pa for 10-40 min. The glass transition temperature of the CBPE film ($-30.2--28.6^{\circ}C$) was not affected by the CP treatment, while the elastic modulus and water vapor permeability decreased (p<0.05). The ink printability was improved by the treatment and the improved printability was maintained during storage for 56 days at room temperature. Roughness of the film increased after treatments and the level of roughness appeared to increase during storage. Heat and microbial biodegradability of the CBPE film was improved by the air-CP treatment (p<0.05). These results have demonstrated the potential of applying CP treatments to improve the flexibility, printability, and biodegradability of CBPE films.

CP 처리의 CBPE 필름의 물리화학적 특성 및 생분해 특성에 대한 영향을 연구하였다. CP 처리는 CBPE 필름의 인장 강도, 신장률, 그리고 광투과도와 같은 물리적 특성에는 영향을 주지 않았으나, air-CP 처리는 CBPE 필름의 유연성, 수분 방벽 특성, 그리고 인쇄적성을 향상시켰다. Air-CP 처리는 저장 중 CBPE 필름 표면의 조도와 O와 N 원소를 포함한 작용기의 양을 증가시켰고, 인쇄적성, 열분해성, 그리고 미생물 분해성을 향상시켰다. 본 연구에서 CP 처리 후 CBPE 필름 표면에서 보여지는 노화 현상을 XPS 결과를 통해 확인할 수 있었다. 본 연구는 CP 처리가 CBPE 필름을 비롯하여 다른 생분해성 식품 포장재의 물리적 특성과 생분해성을 향상시킬 수 있는 기술로서 적용될 수 있다는 가능성을 보여주었다.

Keywords

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