標題: Hyperbranched poly(ether ketone) with carboxylic acid terminal groups: Synthesis, characterization, and derivatization
作者: Shu, CF
Leu, CM
應用化學系
Department of Applied Chemistry
公開日期: 12-一月-1999
摘要: A new procedure is described for the formation of a hyperbranched poly(ether ketone) with carboxylic acid terminal groups. This preparation was based on the one-step synthesis of an AB(2)-type monomer 5-phenoxyisophthalic acid using phosphorus pentoxide/methanesulfonic acid as the condensing agent and solvent. The electrophilic aromatic substitution reaction led to the formation of the al yl ketone linkage. With the help of model compounds, H-1 NMR studies revealed that the degree of branching of the poly(ether ketone) was about 55%. The terminated carboxylic acid groups were readily functionalized, yielding hyperbranched polymers with a variety of different functional chain ends. The nature of the chain ends was shown to dramatically affect physical properties of the hyperbranched macromolecules. The ammonium derivative was soluble in water and behaved as a unimolecular micelle.
URI: http://hdl.handle.net/11536/31579
ISSN: 0024-9297
期刊: MACROMOLECULES
Volume: 32
Issue: 1
起始頁: 100
結束頁: 105
顯示於類別:期刊論文


文件中的檔案:

  1. 000078475700015.pdf