期刊
INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION
卷 20, 期 7, 页码 574-588出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/1023666X.2015.1053599
关键词
Amine polar modifier; Anionic polymerization; IR; Microstructure; NMR; Polybutadiene
In order to understand the influence of various types of polar modifiers on the microstructure of polybutadiene obtained by anionic polymerization, four types of polar modifiers were selected for detailed studies: Lewis bases (sigma complex), Lewis acids ( complex), a mixture of Lewis bases and Lewis acids (sigma+ complex), and acid-base polar modifiers (sigma- complex) where one molecule combined acid and base character. The influence of five different tertiary amines (Lewis base polar modifiers) was studied. Analysis of FT-IR-ATR, H-1, and C-13 NMR data for polybutadienes obtained in the presence of these complexing agents showed that all tested tertiary amines enhanced 1,2 addition of 1,3-butadiene and preferred trans-1,4 addition.
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