Low dielectric transparent poly(amide-imide) thin film with nano scale porous structure

A transparent poly(amide-imide) (PAI) was synthesized with good thermal and optical properties and after that silica nano particles were introduced and removed for nano porous polymer matrix. The successful synthesis of PAI with nano scale porous structure was confirmed with FT-IR and FE-SEM measure...

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Bibliographic Details
Published in:Macromolecular research 2017, 25(11), , pp.1115-1120
Main Authors: Lee, Juheon, Lee, Sangrae, Kim, Kwangin, Yoo, Taewon, Kim, Gunhwi, Han, Haksoo
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemical synthesis
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Contact angle
Glass fiber reinforced plastics
Glass transition temperature
Light transmittance
Nanochemistry
Nanotechnology
Optical properties
Physical Chemistry
Polyamide-imides
Polymer Sciences
Polymers
Silicon dioxide
Soft and Granular Matter
Thermal degradation
Thermodynamic properties
고분자공학
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Summary:A transparent poly(amide-imide) (PAI) was synthesized with good thermal and optical properties and after that silica nano particles were introduced and removed for nano porous polymer matrix. The successful synthesis of PAI with nano scale porous structure was confirmed with FT-IR and FE-SEM measurement. The effects of free volume of polymer on thermal properties were measured with TGA and DSC. This physically modified polymer matrix showed increased thermal degradation and glass transition temperature over 250 °C. In the case of optical properties, UV-Vis and yellow index were measured and PAI with nano porous structure showed transparent colorless properties with light transmittance in the range of 80-40% and yellow index 2.1-1.1. The results also showed low dielectric constant in the range of 3.2-2.5 and contact angles that of 70-73°.
ISSN:1598-5032
2092-7673
DOI:10.1007/s13233-017-5152-3