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Time dependent ultrasonic treatment of waste gypsum toward improved mechanical performance of its EPDM composite

Authors
Kim, In TaeSinha, Tridib KumarMoon, JunhoKong, Tae WoongOh, Jeong Seok
Issue Date
Dec-2021
Publisher
SAGE PUBLICATIONS LTD
Keywords
Waste gypsum; EPDM composite; recycling; mechanical properties; ultrasonication
Citation
JOURNAL OF ELASTOMERS AND PLASTICS, v.53, no.8, pp.1128 - 1137
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF ELASTOMERS AND PLASTICS
Volume
53
Number
8
Start Page
1128
End Page
1137
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/2908
DOI
10.1177/00952443211015356
ISSN
0095-2443
Abstract
Herein, we have attempted to recycle the waste gypsum to be used as filler material in polymer composite. In this regard, aqueous dispersion of gypsum was ultrasonicated for varying time duration (10, 30, and 60 min), dried and used as fillers to develop corresponding EPDM composites. As per the mechanical performance (i.e., tensile strength and elongation at break), the gypsum obtained after ultrasonication for 60 min (i.e., U-60 gypsum) was found best performing filler material compared to the other ultrasonicated gypsum samples, commercial carbon black, and another surface treated gypsum sample. The decreased particle size and enhanced surface area of U-60 gypsum are supposed to be responsible for improving the mechanical property of the composite. Corresponding particle size, surface area, and morphology of all the gypsum samples were thoroughly examined to conclude the reason behind such observation.
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공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles

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Oh, Jeong Seok
대학원 (나노신소재융합공학과)
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