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Synthesis of polyaluminocarbosilane and reaction mechanism study
Author(s) -
Cao Feng,
Kim DongPyo,
Li XiaoDong,
Feng ChunXiang,
Song YongCai
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10781
Subject(s) - acetylacetone , reaction mechanism , fourier transform infrared spectroscopy , polymer chemistry , chemistry , elemental analysis , nuclear chemistry , materials science , organic chemistry , chemical engineering , catalysis , engineering
Polyaluminocarbosilane (PACS) as the precursor of high‐temperature resistant SiC fibers was synthesized by reacting polycarbosilane (PCS) with aluminum(III)acetylacetonate [Al(AcAc) 3 ] at 310°C in N 2 under ambient pressure. The reaction mechanism and the structure of PACS were investigated in detail by FTIR, GPC, GC/MS, ESCA, and elemental analysis. The reaction was proven complex involving the formation of SiOAl and SiAlSi bonds, which were accompanied by the evolution of 3‐methoxy‐2,2‐dimethyl‐oxirane, 2,3‐dihydro‐[1,4]dioxine, pent‐3‐en‐2‐one, and 3‐ethyl‐but‐3‐en‐2‐one, and acetylacetone. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 2787–2792, 2002