원문정보
Printable Time Temperature Integrator Consisting of Oxygen Indicator and Cover Film with Various Oxygen Permeability
초록
영어
A printable time temperature integrator (TTI) consisting of oxygen indicator and cover films with various oxygen permeability was developed. The printing ink contained methylene blue (oxygen indicator) which changed in color during storage. TiO2 and glycerol for UV-activation of TTI and zein and ethanol for printing performance were also contained in the printing ink. The cover film on the ink was employed to control the color change rate and temperature dependency (Arrhenius activation energy, Ea) by using the different films (PE, PET, OPP, and LLDPE). The film properties were varied by annealing. TTI was produced by silk screen printing. As a result, the color change rates were different for the cover films, being the highest in TTI with LLDPE, followed by OPP, PE, and PET. The rate decreased with increase in the cover film thickness. The Ea was the highest in TTI with LLDPE, followed by OPP, PE, and PET. The Ea did not change with the cover film thickness. The annealed PVC and PET film were lower in oxygen permeability than the unannealed ones, indicating the lower color change rate.
목차
서론
재료 및 방법
1. 실험재료
2. 인쇄형 TTI 잉크 제작
3. 시험방법
결과 및 고찰
1. Glycerol 함량조절에 따른 산화-환원 염료 활성의 비가역적 반응 유도
2. 잉크 조성 및 silk screen 최적화
3. 커버필름의 종류 및 두께에 따른 산소 투과도와 온도의존성 도출
4. Annealing 방법에 따른 커버필름의 산소 투과도 변화
요약
감사의 글
참고문헌