Periodic Functionalization of Graphene-Layered Alumina Nanofibers with Aromatic Thermosetting Copolyester via Epitaxial Step-Growth Polymerization
Macromolecular Chemistry and Physics, cilt.218, sa.24, 2017 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 218 Sayı: 24
- Basım Tarihi: 2017
- Doi Numarası: 10.1002/macp.201700338
- Dergi Adı: Macromolecular Chemistry and Physics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Anahtar Kelimeler: aromatic thermosetting copolyesters, epitaxial polymerization, multilayer graphene-layered alumina nanofibers, nanohybrid shish–kebab, periodic functionalization
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Hayır
Özet
In situ epitaxial step-growth polymerization driven interfacial functionalization of aromatic thermosetting copolyester (ATSP) with multilayered graphene wrapped alumina nanofiber surface is reported. During a thermal condensation polymerization, ATSP dip-coated fiber strands develop a nanohybrid shish–kebab structure with periodically assembled and off-surface grown micrometer-scale lamella ATSP domains. A mechanism combining the Plateau–Rayleigh instability, the Marangoni effect, and the epitaxial growth phenomena is proposed to elucidate controlling parameters in the process. X-ray diffraction measurements clearly demonstrate the formation of a mesomorphic lamella phase not present within either the neat ATSP or pristine fiber samples. Results of solid-state nuclear magnetic resonance and thermogravimetric analysis reveal the development of an interfacial coupling between the graphene-coated ceramic nanofibers and the ATSP matrix.