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Utilization of spent coffee grounds as fillers to prepare polypropylene composites for food packaging applications
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  • Yurong Cai,
  • Wenmin Song,
  • Yuncong Yang,
  • Xiuwen Cheng,
  • Mingming Jiang,
  • Rui zhang,
  • Jiri Militky
Yurong Cai
Zhejiang Sci-Tech University

Corresponding Author:[email protected]

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Wenmin Song
Zhejiang Sci-Tech University
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Yuncong Yang
Zhejiang Sci-Tech University
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Xiuwen Cheng
Zhejiang Sci-Tech University
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Mingming Jiang
Zhejiang Sci-Tech University
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Rui zhang
NMG Composites CoLtd
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Jiri Militky
Faculty of Textile, Technical University of Liberec, 46117 Liberec, Czech Republic
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Biomass-derived wastes as the additive of non-degradable plastics have been paid more attention due to the ever-growing environmental pollution and energy crisis. Herein, the spent coffee grounds (SCG) have been used as fillers in polypropylene (PP) after the heat treatment to realize its recycling utilization. The effect of the heat treatment atmosphere on the properties of the obtained SCG and SCG/PP composites has been investigated systematically. The results show that the residual coffee oil can be removed more thoroughly under an air atmosphere than under a nitrogen atmosphere at a relatively low cost and an eco-friendly process. The lower residual oil rate of SCG is beneficial to improve the comminution and further enhance the affinity with the PP matrix. The obtained SCG/PP composite holds lower water absorption, higher hydrophobicity, and better mechanical properties, implying its potential applications in the field of food packaging.
03 Feb 2023Submitted to Microscopy Research and Technique
10 Feb 2023Submission Checks Completed
10 Feb 2023Assigned to Editor
11 Feb 2023Review(s) Completed, Editorial Evaluation Pending
22 Feb 2023Reviewer(s) Assigned
14 Apr 2023Editorial Decision: Revise Major
15 May 20231st Revision Received
18 May 2023Submission Checks Completed
18 May 2023Assigned to Editor
18 May 2023Review(s) Completed, Editorial Evaluation Pending
21 May 2023Reviewer(s) Assigned
25 May 2023Editorial Decision: Accept