Evaluation of the Antibacterial Activity of Eco-Friendly Hybrid Composites on the Base of Oyster Shell Powder Modified by Metal Ions and LLDPE

Januar Widakdo; Tsan-Ming Chen; Meng-Chieh Lin; Jia-Hao Wu; Tse-Ling Lin; Pin-Ju Yu; Wei-Song Hung; Kueir-Rarn Lee

doi:10.3390/polym14153001

Evaluation of the Antibacterial Activity of Eco-Friendly Hybrid Composites on the Base of Oyster Shell Powder Modified by Metal Ions and LLDPE

Polymers (Basel). 2022 Jul 25;14(15):3001. doi: 10.3390/polym14153001.

Authors

Januar Widakdo¹, Tsan-Ming Chen², Meng-Chieh Lin², Jia-Hao Wu², Tse-Ling Lin², Pin-Ju Yu², Wei-Song Hung^{1

3}, Kueir-Rarn Lee³

Affiliations

¹ Advanced Membrane Materials Research Center, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106335, Taiwan.
² Carbide Division, Formosa Plastics Corporation, Taipei 105076, Taiwan.
³ R&D Center for Membrane Technology, Department of Chemical Engineering, Chung Yuan University, Chungli 32023, Taiwan.

Abstract

Transforming biological waste into high-value-added materials is currently attracting extensive research interest in the medical and industrial treatment fields. The design and use of new antibacterial systems are urgently needed. In this study, we used discarded oyster shell powder (OSP) to prepare calcium oxide (CaO). CaO was mixed with silver (Ag), zinc (Zn), and copper (Cu) ions as a controlled release and antibacterial system to test the antibacterial activity. The inhibition zones of various modified metals were between 22 and 29 mm for Escherichia coli (E. coli) and between 21 and 24 mm for Staphylococcus aureus (S. aureus). In addition, linear low-density polyethylene (LLDPE) combined with CaO and metal ion forms can be an excellent alternative to a hybrid composite. The strength modulus at 1% LLDPE to LLDPE/CaO Ag increased from 297 to 320 MPa. In addition, the antimicrobial activity of LLDPE/CaO/metal ions against E. coli had an antibacterial effect of about 99.9%. Therefore, this hybrid composite material has good potential as an antibacterial therapy and biomaterial suitable for many applications.

Keywords: E. coli; S. aureus; antibacterial material; biomaterials; calcium oxide.

Grants and funding

Ministry of Science and Technology, Taiwan (MOST) (MOST 111-2811-E-011-012, MOST 110-2221-E-011-122-MY3 and MOST 110-2622-E-011-009) and Formosa Plastics Corporation Tai-wan.