Synthesis and Characterization of Hydroxyl Terminated Polybutadiene Grafted with Ferrocene Derivative
Date Issued
2012
Date
2012
Author(s)
Chen, Li-Heng
Abstract
Butacene, which can be prepared in a series of reactions, has been used in solid propellant composite as a catalyst to control the burning-rate of a rocket. At first, we synthesized 4-chlorobutylferrocene by using Friedel-Crafts acylation of ferrocene followed by deoxigenation of the acylated ferrocene. The resulting 4-chlorobutylferrocene was to react with magnesium metal by using Grignard reaction to form a corresponding Grignard intermediate compound which can react with chlorodimethylsilane to produce 4-(ferrocenylbutyl) dimethylsilane. Ferrocenehydrosilane were added to the side chain double bonds of hydroxyl-terminated polybutadiene (HTPB) using hydrosilylation reaction with Pt as a catalyst to form 4-(ferrocenylbutyl) dimethylsilane-grafted HTPB, which is thus called Butacene. The structure of Butacene will be characterized by using FTIR and NMR. The iron content in the Butacene was verified by using thermogravimetric analysis (TGA) and found to be comparable to that of the commercial Butacene (SNPE)
Subjects
Butacene
Friedel-Crafts reaction
deoxygenation reaction
Grignard reaction
silanation reaction
HTPB
hydrosilylation
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-101-R99524086-1.pdf
Size
23.54 KB
Format
Adobe PDF
Checksum
(MD5):01b1fde47f8c845636e5b991a466446e