Thermal pre-processing before extraction of polyhydroxyalkanoates for molecular weight quality control
Polymer Degradation and Stability（2023）
Abstract
•125 °C is a lower extraction temperature for PHB with dimethyl carbonate.•PHA solvent extraction temperatures from dried biomass can be evaluated by DSC.•PHA intrinsic viscosity can be measured in dimethyl carbonate solutions at 60 °C.•PHA scission kinetics can be followed with change of weight average molecular mass .•Thermal treatment of dry PHA-rich biomass lowers PHA molecular weight predictably.
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Key words
Polyhydroxyalkanoate production,Extraction,Mixed microbial cultures,Molecular weight control,Intrinsic viscosity,Dimethyl carbonate,Gelation,Quality control,Random scission,Monte Carlo modelling
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