Water-sorption behaviors of poly(3,4′-oxydiphenylene pyromellitimide) films depending on the thickness variation

Effect of hydrophobic hexafluoroisopropy

Effect of hydrophobic hexafluoroisopropylidene group on the water sorption behaviors of rigid poly(p-phenylene pyromellitimide) polyimide thin films

✍ Jongchul Seo; Sang Yup Lee; Wonbong Jang; Haksoo Han 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 122 KB 👁 1 views

## Abstract We prepared poly(__p__‐phenylene pyromellitimide) (PMDA–PDA), poly(__p__‐phenylene 4,4′‐hexafluoroisopropylidene diphthalimide), and their copolyimides with various compositions to explore the relationship between the water sorption and structure. The water sorption behaviors were gravi