Premium
Synthesis and characterization of maleinized‐silylated low molecular weight guayule rubber (MASiGR)
Author(s) -
Thames Shelby F.,
Gupta Sandhya
Publication year - 2001
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.1492
Subject(s) - natural rubber , silanol , hydrosilylation , polymer chemistry , fourier transform infrared spectroscopy , silylation , silane , catalysis , grafting , materials science , maleic anhydride , chemistry , polymer , organic chemistry , chemical engineering , copolymer , engineering
Maleinization followed by silylation of low molecular weight guayule rubber was accomplished for the first time via a two‐step process. Maleinization was first effected by grafting maleic anhydride onto guayule rubber under the influence of benzoyl peroxide catalyst to give maleinized guayule rubber (MAGR). The maleinized rubber was then further derivatized via hydrosilylation with dichloromethyl silane and chloroplatinic acid (Speier's catalyst) to give maleinized‐silylated guayule rubber (MASiGR). The silylated polymer (MASiGR) was further functionalized by reaction with ethanol or aqueous ammonia to produce ethoxysilane and silanol moieties, respectively. The products were characterized by Fourier transform infrared spectroscopy (FTIR), 1 H‐, 13 C‐, and 29 Si‐ nuclear magnetic resonance spectroscopy (NMR). © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 754–761, 2001