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Stereoselective Complex Formation between Polybutadiene and Cyclodextrins in Bulk

✍ Scribed by Yukari Kuratomi; Motofumi Osaki; Yoshinori Takashima; Hiroyasu Yamaguchi; Akira Harada

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
211 KB
Volume
29
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Polybutadienes (PBs) are found to form inclusion complexes with cyclodextrins (CDs) stereoselectively to give crystalline compounds in bulk. These complexes have been isolated and characterized by means of ^1^H NMR and ^13^C CP/MAS NMR spectroscopy, and X‐ray diffraction. Although α‐CD did not form inclusion complexes with any kinds of PBs in aqueous solutions, α‐CD did form inclusion complexes with PBs having 1,4‐cis‐ and 1,4‐trans‐butadiene units in bulk by heating at 100 °C. On the other hand, PB having 79% of a 1,2‐structure did not form inclusion complexes with α‐CD. The yield of the inclusion complexes increases with an increase in the content of the 1,4‐cis‐structure of PB and decreases with the molecular weights of the PBs.

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