Effective Synergistic Effect of Treatment and Modification on Spent Coffee Grounds for Sustainable Biobased Composites - Archive ouverte HAL
Article Dans Une Revue Waste and Biomass Valorization Année : 2021

Effective Synergistic Effect of Treatment and Modification on Spent Coffee Grounds for Sustainable Biobased Composites

Résumé

Spent coffee grounds (SCGs) represent a huge amount of global waste whose post-use disposal triggers environmental issues. In this study, SCGs were successfully treated and modified to improve the mechanical properties of biobased composites with epoxy matrix. A two-step treatment was proposed, pretreating by a NaOH solution and modifying by maleic anhydride (MA). MA acts as a coupling agent to create the internal network in composite through the interaction between functional groups. Accordingly, MA improves the interface between phases in composite, ensures a better physical property compared to the composite without modification. Consistently, the two-step treatment depicts improved mechanical properties: flexural modulus and flexural strength increased to 3053 MPa and 45 MPa, respectively, compared to 2429 MPa and 33 MPa for composite with pure SCGs.
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Dates et versions

hal-03487061 , version 1 (17-12-2021)

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Dang Mao Nguyen, Vu Thi Nhung, Thi Cam Le Do, Chi Nhan Ha-Thuc, Patrick Perre. Effective Synergistic Effect of Treatment and Modification on Spent Coffee Grounds for Sustainable Biobased Composites. Waste and Biomass Valorization, 2021, ⟨10.1007/s12649-021-01566-z⟩. ⟨hal-03487061⟩
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