The relationship between the chemical structure and thermal conversion temperatures of thermally rearranged (TR) polymers
- Authors
- Calle, Mariola; Chan, Yishee; Jo, Hye Jin; Lee, Young Moo
- Issue Date
- Jun-2012
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Thermal conversion temperature; Glass transition temperature; Thermal rearrangement
- Citation
- POLYMER, v.53, no.13, pp.2783 - 2791
- Indexed
- SCIE
SCOPUS
- Journal Title
- POLYMER
- Volume
- 53
- Number
- 13
- Start Page
- 2783
- End Page
- 2791
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/134016
- DOI
- 10.1016/j.polymer.2012.04.032
- ISSN
- 0032-3861
- Abstract
- An attempt was made to elucidate the relationship between chemical structure, in terms of glass transition temperature (T-g), and conversion temperature (T-TR) of thermally rearranged polybenzoxazole membranes, by analyzing DSC and TGA data for a total of 15 sets of o-hydroxypolyimides and copolyimides, derived from two experimental and four commercial structurally different diamines, as well as four different dianhydride monomers. Our research revealed that T-TR was influenced by chain ridigity of o-hydroxypolyimides, and exhibited a linear relationship with T-g. Therefore, structure and thermal property of o-hydroxypolyimide should be considered when studying TR polymers to determine thermal conversion to polybenzoxazole.
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