Abstract
Epoxidized lignosulfonate (ELS) and cyclocarbonated lignosulfonate (CLS) were synthesized using modifying lignosulfonate. Through FTIR normalization procedure and titration method, the yield of epoxidation and carbonation were determined. Subsequently, two kinds of epoxy blends via the addition of ELS and CLS (20 wt%) as reactive fillers to a conventional DGEBA epoxy resin and curing by diaminodiphenylmethane (DDM) were prepared. The curing process was investigated by non-isothermal differential scanning calorimetry (DSC). For ELS/DGEBA and CLS/DGEBA blends and DGEBA epoxy resin, the curing kinetic parameters of Kamal model were computed via conventional fitting method using experimental reaction rate data. Also, through an approach proposed by Sbirrazzuoli, using activation energy data computed by an advanced integral isoconversional method developed by Vyazovkin, all samples exhibited a similar activation energy dependency on the extent of the reaction which can be attributed to a similar curing reaction mechanism for ELS/ DGEBA blend, CLS/ DGEBA blend and DGEBA.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
