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论文类型：期刊论文

发表时间：2008-10-30

发表刊物：POLYMER

收录刊物：SCIE、EI、Scopus

卷号：49

期号：23

页面范围：4960-4967

ISSN号：0032-3861

关键字：Rare earth-coordinated polymers; Polyaryletherketone; Carboxyl group

摘要：A series of novel polyaryletherketones bearing pendant carboxyl groups were synthesized via solution nucleophilic polycondensation reaction. and the rare earth (Re3+ = S3+, EU3+, Dy3+ and Tb3+) coordinated polymers were prepared using the polymer as macromolecular ligand and 1,10-phenanthroline (Phen), dibenzoylmethane (DBM) or 8-hydroxyquinoline (HQ) as co-ligands. Their structures were confirmed by means of FT-IR, H-1 NMR and WAXD methods. WAXD results showed that the rare earth-coordinated polymer had similar amorphous structure to the polymer matrix. whereas the diffraction peaks corresponding to rare earth salts were completely absent, indicating a homogeneous distribution of rare earth ions within the polymer hostess due to the formation of coordination bonds between rare earth ions and the carboxyl groups on the polymer backbone. The rare earth coordination polymers were soluble in polar solvents such as DMSO, DMAc, DMF and NMP, and could be easily cast into transparent tough thin films. The polyaryletherketones synthesized had high glass transition temperatures above 210 degrees C, and showed fairly good thermal stability with 5% thermal decomposition loss above 402 degrees C. (C) 2008 Elsevier Ltd. All rights reserved.