| Yazarlar (3) |
Prof. Dr. Zekeriya YERLİKAYA
Gazi Üniversitesi, Türkiye |
Serpil Aksoy
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Bayramlı Erdal
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| Özet |
| A series of fully aromatic copolyesters based on p‐acetoxybenzoic acid (p‐ABA), hydroquinone diacetate (HQDA), terephthalic acid (TPA), and m‐acetoxybenzoic acid (m‐ABA) were prepared by a modified melt‐polycondensation reaction. The copolyesters were characterized by DSC, thermogravimetric analysis, 1H NMR, polarized optical microscopy, X‐ray diffraction, and intrinsic viscosity measurements. The copolyesters exhibited nematic liquid‐crystalline phases in a broad temperature range of about 150 °C, when the content of linear (p‐ABA, HQDA, and TPA) units was over 67 mol %. DSC analysis of the anisotropic copolyesters revealed broad endotherms associated with the nematic phases, and the melting or flow temperatures were found to be in the processable region. The flow temperatures and crystal‐to‐nematic and nematic‐to‐isotropic transitions depend on the type of linear monomer units, and … |
| Anahtar Kelimeler |
| aromatic | liquid-crystalline polymer | copolymerization | polyesters | thermal properties | degree of crystallinity | sequence distribution |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale |
| Dergi Adı | JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY |
| Dergi ISSN | 0887-624X Wos Dergi Scopus Dergi |
| Dergi Tarandığı Indeksler | SCI |
| Makale Dili | İngilizce |
| Basım Tarihi | 10-2001 |
| Cilt No | 39 |
| Sayı | 19 |
| Sayfalar | 3263 / 3277 |
| Doi Numarası | 10.1002/pola.1309 |
| Makale Linki | http://doi.wiley.com/10.1002/pola.1309 |
| Atıf Sayıları | |
| WoS | 18 |
| Google Scholar | 29 |
