Medium chain glycerides of coconut oil for microwave-enhanced conversion of polycarbonate into polyols

[Display omitted] •Two-step solvent-free recycling process for polycarbonate was developed.•Medium chain glycerides of coconut oil used for polycarbonate conversion to polyols.•100% conversion of polycarbonate to polyols.•Accelerating effect of microwaves on polycarbonate decomposition.•Low-molecula...

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Bibliographic Details
Published in:European polymer journal 2017-01, Vol.86, p.173-187
Main Authors: Beneš, Hynek, Paruzel, Aleksandra, Trhlíková, Olga, Paruzel, Bartosz
Format: Article
Language:English
Subjects:
Chains
Chains (polymeric)
Chemical recycling
Chemical synthesis
Coconut oil
Conversion
Glycerides
Glycerol
Hydroxyl groups
Kinetics
Linkages
Medium chain triglycerides
Microwave
Molecular weight
Monoglycerides
Polycarbonate
Polycarbonates
Polyols
Polyurethane
Polyurethane resins
Reaction kinetics
Reagents
Renewable resource
Solvolysis
Triglycerides
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Summary:[Display omitted] •Two-step solvent-free recycling process for polycarbonate was developed.•Medium chain glycerides of coconut oil used for polycarbonate conversion to polyols.•100% conversion of polycarbonate to polyols.•Accelerating effect of microwaves on polycarbonate decomposition.•Low-molecular weight polyols are produced. In this paper, the medium chain glycerides of coconut oil were used as solvolysis reagents for microwave-enhanced conversion of polycarbonate into recycled polyols. First, triglycerides of coconut oil were transesterified with glycerol to monoglycerides bearing functional hydroxyl groups, which were able to react with carbonate linkages resulting in cleavage of polycarbonate chain. The important accelerating effect of microwave irradiation on kinetics of polycarbonate solvolysis was observed. The developed recycling process produced a mixture of low-molecular weight polyols applicable for synthesis of novel polyurethanes.
ISSN:0014-3057
1873-1945
DOI:10.1016/j.eurpolymj.2016.11.030