【摘要】 利用乙酸钯和２，２′－联吡啶组成的催化剂体系催化一氧化碳和苯乙烯交替共聚合成出聚（１－氧代－２－苯基丙撑）（ＳＴＣＯ）。采用ＩＲ、ＮＭＲ、元素分析以及广角Ｘ光散射对该聚合物以表征。该共聚物晶体为单斜晶胞，晶胞参数为ａ＝１５．７×１０－１０ｍ，ｂ＝６．１７×１０－１０ｍ，ｃ＝７．４５×１０－１０ｍ，α＝９０．０°，β＝１０４．３°，γ＝９０．０°；晶胞体积为６９７．２×１０－３０ｍ３；空间点群为Ｐ２１／ｃ。此外，对该共聚物热降解进行了初步研究。更多还原

【Abstract】 Carbon monoxide and styrene alternating copolymer(Ⅰ) was prepared using a catalyst prepared from palladium acetate and 2,2′ bipyridyl. This polyketone was characterized by IR spectra, NMR spectra, element analysis and wide angle X ray scattering spectra. The results conform that this polyketone is linear alternation copolymer——poly(1 oxo 2 phenyltrimethylene). A lower molecular weight and middle crystallinity copolymer(Ⅱ), and less crystallinity and less stereoregular copolymer(Ⅳ) were obtained by Kumagawa extraction and epimerizating of copolymer(Ⅰ), respectively. The observed X ray Bragg distances and intensities of the reflections are interpreted with a monoclinic unit cell having a =15.7×10 -10 m, b =6.17×10 -10 m, c =7.45×10 -10 m,α=90.0°,β=104.3°,γ=90.0°; the unit cell volume is 697.2×10 -30 m 3; the space group proposed is P 2 1/c 。 Moreover, the study on thermal degradation of alternating copolymer of carbon monoxide and styrene by thermal gravimetry (TG) method was also reported in this paper. Activation energy E in the main thermal degradation is 129.7 kJ/mol.更多还原