In this study, transparent thin films for coating material are synthesized by adding bulky CF3 and hydroxyl groups intro into poly(amide-imide)s. As expected, these poly(amide-imide)s show higher shear adhesion and higher glass transition temperatures than the neat poly(amide-imide) due to hydrogen bonding of the hydroxyl groups. In addition, the modification to the poly(amide-imide) structure leads to only slight decreases in transmittance and yellow index. Consequently, the successful synthesis of poly(amide-imide)s with wide applications as transparent coating materials due to their optical properties and high adhesion is demonstrated. Transparent flexible display and coating products can be manufactured with poly(amide-imide)s having high reliability and a low chance of cracking due to their favorable thermal properties.
Bibliographical noteFunding Information:
This work was granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea. (No. 20154010200810) and Business for cooperative R&D between industry, academy and research institute funded Korea small and medium business administration in 2015(No. C0277607 and No. C0298929).
© 2017 Elsevier B.V.
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Surfaces, Coatings and Films
- Organic Chemistry
- Materials Chemistry