Surface modification of waste gypsum for use as additive filler of greencomposites based on poly(butylene adipate terephthalate)

Van Cong Do; Duc Huynh Mai; Huu Dat Nguyen; Quang Minh Nguyen; Huu Trung Tran; Thi Thu Trang Nguyen; Thi Quynh Hoa Kieu; Vu Giang Nguyen

doi:10.15625/2525-2518/22501

Author affiliations

Authors

Do Van Cong Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam https://orcid.org/0000-0002-0024-1424
Mai Duc Huynh Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam
Nguyen Huu Dat Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam https://orcid.org/0000-0002-0723-3822
Nguyen Quang Minh Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam
Tran Huu Trung Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam
Nguyen Thi Thu Trang Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam https://orcid.org/0000-0003-3195-7561
Kieu Thi Quynh Hoa Institute of Biotechnology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam https://orcid.org/0009-0004-3875-9933
Nguyen Vu Giang Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam; Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam

DOI:

https://doi.org/10.15625/2525-2518/22501

Keywords:

Polybutylene adipate terephthalate, waste gypsum, ethylene bis stearamide, biocomposites, Hydrolysis

Abstract

Using fillers to reinforce and improve the desired properties of polymer composite materials is the desire of researchers. In which, the dispersion ability, interaction and adhesion between fillers and polymer matrix are the key to determine the properties of the obtained materials. This study focuses on surface modification of waste gypsum particles with ethylene bis stearamide (EBS) to use it as a reinforcing filler for polybutylene adipate terephthalate (PBAT), a biodegradable polymer with many advantages such as high flexibility and good barrier properties. Using energy dispersive X-ray spectroscopy (EDX), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM) images observation confirmed that the WGS granules were successfully modified with the suitable EBS content of 5 wt.%. Thanks to the modification, the processability, dispersion and adhesion of WGS to the PBAT matrix were improved, as results, the mechanical and thermal performances as well as hydrolytic resistance of obtained biocomposites was also enhanced.

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