| 학회 | 한국고분자학회 |
| 학술대회 | 2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 | 29권 2호, p.555 |
| 발표분야 | 복합재료 |
| 제목 | Preparation of PET/clay nanocomposites with novel nanoclay treatment |
| 초록 | PET/clay nanocomposites were prepared by in-situ polymerization with novel nanoclay treatment. The treatment was based on the preparation of nanoclay dispersed solution has good reactivity with PET(Polyethylene terephthalate) resin. In this study, three types of PET nanocomposites were polymerized with pristine montmorillonite (MMT), organoclay by N-methyl di-ethanol amine (MDEA) based material, and MMT with novel treatment method. The PET/clay nanocomposite from novel nanoclay treatment was investigated on thermal properties and morphological properties by several microscopic methods. The PET/clay nanocomposite by novel nanoclay treatment had improved thermal properties and good nanoclay dispersion than the others. PET/clay nanocomposites can be prepared by two processes, which are in-situ polymerization and melt compounding. But there are some difficulties to make the nanocomposite because the polarity reduces as the molecular weight increases which might result in the phase separation of the nanoclay and PET resin. Therefore, the key technology of the PET/clay nanocomposite is the modification technology of the pristine nanoclay.1 There have been various attempts to make PET/clay nanocomposite has improved nanoclay dispersion on PET matrix. Davis et al. prepared PET nanocomposites by melt compounding with some organoclays which were organified by imidazolium based material and ammonium based one.2 Chang et al. used the organically modified MMT by phosphonium based material to prepare PET nanocomposite by in-situ polymerization.3 There were some improvement for nanoclay dispersion and thermal stability of organoclay during PET polymerization. In this study, we tried new treatment method for nanoclay that could be directly applied to PET polymerization without organically modification step. And we polymerized PET/clay nanocomposites by using the nanoclay from new treatment, pristine MMT and MDEA based organoclay in order to compare their properties. The morphological studies on the PET nanocomposites were also performed by optical microscope, Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM). The PET/clay nanocomposites were prepared by in-situ polymerization with three different nanoclays. The thermal stability was increased with Novel-PCN, but the others were shown similar patterns with pure PET. In the morphological studies, Novel-PCN showed us better nanoclay dispersed structure among them. 참고문헌 1. Kiyoshi Chujo, Advanced Technology and Application of Polymer Nano-Composite, CMC, 126 (2001) 2. C. H. Davis, L. J. Mathias, J. W. Gilman, D. A. Schiraldi, J. R. Shields, P. Trulove, T. E. Sutto and H. C. Delong, J. Polym. Sci. Part B: Polym Phys., 40, 2661 (2002) 3. J. H. Chang, S. J. Kim, Y. L. Joo and S Im, Polymer, 45, 919(2004) |
| 저자 | 김세훈1, 김성철2 |
| 소속 | 1호남석유화학 대덕(연), 2기능성 고분자 신소재 연구센터 |
| 키워드 | PET; Nanocomposite; In-situ polymerization |
