Earticle

초록

영어

Degradation performance of environmentally friendly plastics that can be disintegrated by combination of sunlight, microbes in soil, and heat produced in landfills was evaluated for use in industries. Two multi-degradable master batches (MCC-101 and MCC-102 were manufactured, separately mixed with polyethylene using film molding machine to produce 0.025 mm thick films, and exposed to sunlight, microbes, and heat. Low- and high-density polyethylene (LDPE and HDPE) films containing MCC-101 and MCC-102 became unfunctional by increasing severe cleavage at the surface and showed high reduction in elongation after 40 days of exposure to ultraviolet light. LDPE and HDPE films showed significant physical degradation after 100 and 120 days, respectively, of incubation at 68±2℃. SEM images of films cultured in mixed mold spore suspension at and 85% humidity for 30 days revealed accelerated biodegradation on film surfaces by the action of microbes. LDPE films containing MCC-l01 showed absorption of carbonyls, photo-sensitive sites, at 1710 cm$-1 when exposed to light for 40 days, whereas those not exposed to ultraviolet light showed no absorption at the same frequency. MCC-101-based LDPE films showed much lower Mw distribution after exposure to UV than its counterpart, due to agents accelerating photo-degradation contained in MCC-101.

목차

Abstract
 Introduction
 Materials and Methods
 Results and Discussion
 Acknowledgments
 References

키워드

저자

• Chung, Myong-Soo [ Department of Packaging, Yonsei University) Lee, Wang-Hyun (Multicom Post Korea Corporation ] Corresponding author
• You, Young-Sun [ Multicom Post Korea Corporation ]
• Kim, Hye-Young [ Multicom Post Korea Corporation ]
• Park, Ki-Moon [ Department of Food and Life Science, Sungkyunkwan University ]
• Lee, Sun-Young [ Department of Forest Products, Korea Forest Research Institute ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  Food Science and Biotechnology

• 간기

  격월간

• pISSN

  1226-7708

• 수록기간

  1992~2009

• 십진분류

  KDC 574 DDC 664