[Data] Research Institute of Chemical Reaction Mechanisms, Delamination Mechanism of Heterogeneous Material Interfaces 1

We will introduce a case that elucidates the differences in linear expansion coefficients of PET and PEN films with similar main skeletal structures and the mechanisms that produce these differences.

Although they are different materials, if they have similar molecular structures, there is potential for the development and expansion of composite products due to their compatibility and similar properties. However, while they are similar, there are also pitfalls. For example, differences in linear expansion rates can cause strain and displacement at their interface, leading to delamination in many cases. This document presents a case study that clarifies the differences in linear expansion rates between PET and PEN films, which have similar main chain structures, and the mechanisms that produce these differences. [Contents] - About materials PET and PEN - XPS analysis (comparison of bonding states) - TMA analysis (comparison of linear expansion rates) - Data analysis *For more details, please refer to the PDF document or feel free to contact us.

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