Thermomechanical and optical properties of molecularly controlled polyimides derived from ester derivatives

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• 作者：Ki-Ho Nam^a ; ¹ ; Hyeonil Kim^a ; ^b ; ¹ ; Hoi Kil Choi^a ; Hyeonuk Yeo^a ; Munju Goh^a ; Jaesang Yu^a ; Jae Ryang Hahn^b ; Haksoo Han^c ; Bon-Cheol Ku^a ; ^{cnt@kist.re.kr} ; Nam-Ho You^a ; ^{polymer@kist.re.kr}
• 关键词：Poly(ester imide) ; Optical transparency ; Thermomechanical stability ; Molecular orbital ; Molecular dynamics
• 刊名：Polymer
• 出版年：2017
• 出版时间：13 January 2017
• 年：2017
• 卷：108
• 期：Complete
• 页码：502-512
• 全文大小：2577 K
• 卷排序：108

文摘

New diamines for high-performance poly(ester imide)s (PEsIs) have been developed. The polymer films exhibited a good transmittance of >90% at 550 nm, high Tg above 289 °C and 5% weight loss temperature (483–511 °C), and low CTE (11–68 ppm/°C). Molecular dynamics (MD) simulation was performed to study the CTE of PEsIs and the agreement between measured and simulated results was acceptable.