Synthesis and properties of boron-containing soybean oil based thermosetting copolymers

The first example of boron-containing soybean oil based copolymers was prepared from soybean oil, styrene, divinylbenzene and 4-vinylphenyl boronic acid by cationic polymerization using boron trifluoride etherate as initiator. Soxhlet extraction and NMR spectroscopy indicate that the copolymers cons...

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Bibliographic Details
Published in:Polymer (Guilford) 2010-12, Vol.51 (26), p.6099-6106
Main Authors: Sacristán, Marta, Ronda, Joan C., Galià, Marina, Cádiz, Virginia
Format: Article
Language:English
Subjects:
Applied sciences
Boron
Boron-containing polymers
Copolymerization
Copolymers
Crosslinking
Exact sciences and technology
Extraction
Flame retardants
Networks
Oligomers
Organic polymers
Physicochemistry of polymers
Preparation, kinetics, thermodynamics, mechanism and catalysts
Renewable resources
Soybeans
Styrenes
Vegetable oils
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Summary:The first example of boron-containing soybean oil based copolymers was prepared from soybean oil, styrene, divinylbenzene and 4-vinylphenyl boronic acid by cationic polymerization using boron trifluoride etherate as initiator. Soxhlet extraction and NMR spectroscopy indicate that the copolymers consist of a crosslinked network plasticized with varying amounts of oligomers and unreacted oil. The thermal degradation mechanism was studied and the thermal, dynamomechanical and flame retardant properties of these materials were examined. Thermosets with glass transition temperatures ranging from 43 to 60 °C, which are thermally stable below 350 °C and with LOI values from 23.7 to 25.6 were obtained. The LOI tests indicate that the flame retardant properties of vegetable oil can be improved by adding boron covalently bonded to the polymer. [Display omitted]
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2010.11.003