| 학회 | 한국화학공학회 |
| 학술대회 | 2004년 봄 (04/23 ~ 04/24, 공주대학교) |
| 권호 | 10권 1호, p.32 |
| 발표분야 | 고분자 |
| 제목 | Synthesis and Characterization of Polyurethane/Clay Nanocomposite |
| 초록 | Clay / polyurethane nanacomposites were synthesized from covalent bond between clay and polymeric 4,4’ diphenylmethane diisocyanate (PMDI) by in-situ intercalation process. Silanol group of clay and NCO group of PMDI were reacted for 24 hours, 3000 rpm maintaining 50℃. The FT-IR analysis of the modified clay demonstrated that NCO characteristic peak was observed in FT-IR analysis of the modified clay after modification reaction. The 2θ of the nanocomposite synthesized with the modified clay was disappeared. The flexural and tensile strength of the clay/polyurethane nanocomposite using the modified clay showed that the maximum strengths were with 3 wt % of the modified clay. The Tg of the nanocomposite decreases with an increase in the modified clay. We suggest that the decrease in the Tg of the clay/polyurethane nanocomposite with the modified clay content might be due to an increase in the chain flexibility of polyurethane backbones. Acknowledgement: This research was supported by a grant (code BC1-102) from Carbon Dioxide Reduction & Sequestration Research Center, one of the 21st Century Frontier Programs funded by the Ministry of Science and Technology of Korean government. |
| 저자 | 김상균, 서원진, 승유택, 신민철, 김우년 |
| 소속 | 고려대 |
| 키워드 | polyurethane; clay; nanocomposite; polymric 4; 4 diphenylmethane isocyanate |
| 원문파일 | 초록 보기 |
