| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 가을 (10/07 ~ 10/08, 대구 EXCO) |
| 권호 |
35권 2호 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
Molecular Aggregation Structure Analysis of Fully or Partly Aromatic Polyimide Thin Films by Synchrotron Grazing Incidence Wide-Angle X-ray Scattering |
| 초록 |
The intermolecular aggregation structures of fully aromatic polyimides (Ar-PIs) and semialiphatic polyimides (Al-PIs) were characterized by GIWAXS technique. The aggregation structures of both Ar- and Al-PI thin films on Si substrates were a mixture of ordered and disordered domains. For Ar-PIs with glass transition temp. (Tg) higher than the imidization temp. (Ti) , the aggregation structures are significantly influenced by the 3-D structures of the PI chain. Rodlike molecular structures with high planarity are required for the growth of ordered domains of Ar-PIs, whereas an Ar-PI having bent nonplanar structure shows highly amorphous characteristics. The bulky -CF3 in the diamine moiety increase the interchain distance in the ordered domains. For Al-PIs with Tg lower than Ti, the degree of interchain ordering was higher than those of Ar-PIs, but was decreased significantly by decreasing Tg, due to the vigorous motion of PI chains during thermal imidization. |
| 저자 |
김경태1, Junji Wakita2, 진상우1, 신태주3, 노예철1, 안병철1, 박삼대1, 김진철1, 김동민1, 정정운1, 권원상1, 김미희1, 고용기1, 정성민1, 최준만1, 이문호1, Shinji Ando2
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| 소속 |
1POSTECH 화학과, 2Tokyo Institute of Technology, 3포항가속기(연) |
| 키워드 |
molecular aggregation; polyimide; polymer thin film; grazing incidence wide-angle X-ray scattering
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| E-Mail |
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