| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Enhancement in Tear Strength of PLA/PBAT Film Using PLA-PBAT-PLA (tri block) copolymer as a compatibilizer |
| 초록 |
Many researches have been carried out to replace non-degradable films with biodegradable films, and the blend of PLA/PBAT is considered to be the most promising material. Although PLA has many advantages such as low price and mechanical strength, it is difficult to be formed as blown film due to lack of toughness and it has been solved by supplementing the weakness with other materials such as PBAT. However, the high cost of PLA/PBAT film still hinders the replacement of non-degradable film. The increase of the content of PLA in film has been expected to make the cost reasonable, while the poorer the tear strength gets as the larger the amount of PLA is. Most of studies on PLA/PBAT materials have been conducted to increase the compatibility between two resins by introducing various additives. Our ultimate goal is to improve the tear strength of PLA/PBAT film by raising the compatibility between the two resins and we used the tri-block copolymers as a compatibilizer. We prepared tri-block (PLA-PBAT-PLA) copolymers with a different length of each block and they were added during the melt blending through the internal mixer. It is well-known that the compatibility between two components in an immiscible blend affects the size of dispersions. After evaluating the improvement in their compatibility using SEM, we checked the tear strength using Elmendorp testing machine. Acknowledgment: This research was supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science and ICT for First-Mover Program for Accelerating Disruptive Technology Development (2018M3C1B9069748). |
| 저자 |
권미경, 서지원, 이성준, 김현철, 정상원, 이세근
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| 소속 |
DGIST |
| 키워드 |
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| E-Mail |
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