Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5201469 | Polymer Degradation and Stability | 2015 | 8 Pages |
Abstract
Subcritical water and soluble alkali were applied to hydrolyze thermosetting polyester resins of fiber reinforced plastic (FRP) to recover a styrene-fumaric acid copolymer (SFC) in high yield. SFC is a functional polymer and has the same molecular structure as that of styrene-maleic acid copolymer, which is applied as high value-added additive. Potassium hydroxide (KOH) contributed to accelerate hydrolysis and to provide water solubility to the SFC. The optimized reaction conditions based on the SFC yield were at either a temperature of 230 °C, reaction time of 2 h, and with a KOH concentration of 0.38 mol/L, or 230 °C, 1 h, and 0.72 mol/L for sodium hydroxide (NaOH). It was verified that this method had the potential to recycle thermosetting polyester resin of FRPs to produce SFC.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Takaharu Nakagawa, Motonobu Goto,