Sustainable and eco-friendly polymers, natural polymers, bio-based polymers, and degradable polyesters, are of growing interest because of environmental concerns associated with waste plastics and emissions of carbon dioxide from preparation of petroleum-based polymers. Degradable polymers, poly(butylene adipate-co-terephthalate) (PBAT), poly(propylene carbonate) (PPC), and poly(L-lactic acid) (PLLA), are related to reduction of carbon dioxide in processing. To improve a weak mechanical property of a degradable polymer, a blending method is widely used. This study was forced on the component separation of degradable polymer blends for effective recycling. The melt-mixed blend films in a specific solvent were separated by two layers. Each layer was analysed by FT-IR, DSC, and contact angle measurements. The results showed that each component in the PPC/PLLA and PPC/PBAT blends was successfully separated by a solvent.

Abstract
 1. 서 론
 2. 실험 재료 및 방법
  2.1. 재료 및 블렌드 제조
  2.2. 분석 방법
 3. 결과 및 고찰
  3.1. 블렌드 특성
  3.2. 고분자용액의 상 분리
 4. 결론
 REFERENCES

• 조용광(부경대학교 고분자공학과) | Yong-Kwang Cho (Department of Polymer Engineering, Pukyong National University)
• 김영우(부경대학교 고분자공학과) | Yeong-Woo Kim (Department of Polymer Engineering, Pukyong National University)
• 이학용(부경대학교 고분자공학과) | Hak Yong Lee (Department of Polymer Engineering, Pukyong National University)
• 박상보(부경대학교 고분자공학과) | Sang-Bo Park (Department of Polymer Engineering, Pukyong National University)
• 박찬영(부경대학교 고분자공학과) | Chan-Young Park (Department of Polymer Engineering, Pukyong National University)
• 이원기(부경대학교 고분자공학과) | Won-Ki Lee (Department of Polymer Engineering, Pukyong National University) Corresponding author