Multi-material additive manufacturing of MWCNT-based conductive photocurable resin and its antimicrobial property

Sethayospongsa Rathanakarn; Chuayprakong Sunanta; Srisawadi SasitornNuansing WiwatChokevivat WatcharaMethachan BoriphatSrimongkol SiwapornSuksanong Pongthorn

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Multi-material additive manufacturing of MWCNT-based conductive photocurable resin and its antimicrobial property

机译：Multi-material additive manufacturing of MWCNT-based conductive photocurable resin and its antimicrobial property

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Abstract In this study, we explored the technical feasibility to fabricate bi-material structures having electrically conductive properties at the surface using a conventional digital light processing (DLP) by printing conductive resin containing multiwalled carbon nanotube (MWCNT) on the non-conductive one. It was found that the DLP-printed bi-material structure with conductive surface cooperated with 1.35 wt% of MWCNT offers electrical resistance in the range of 7.58 ± 0.46 megaohm. The bi-material structure possessed bending yield stress of 6 MPa. When applying 12-V DC for 1 h at the surface of the printed structure, it showed an excellent antimicrobial activity in which more than 99.99% of Eschericia coli and Staphylococcus aureus was destroyed. This novel disinfecting approach has advantages over other conventional sterilizations, such as volatile solvent and autoclave sterilization, because it is solvent-free, fast, and less labor-consuming. The developed technology may be applicable to retrofit antimicrobial printed surfaces on existing designs. Graphical abstract

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来源
《Journal of Materials Research》 |2023年第3期|708-719|共12页
作者
Sethayospongsa Rathanakarn; Chuayprakong Sunanta; Srisawadi SasitornNuansing WiwatChokevivat WatcharaMethachan BoriphatSrimongkol SiwapornSuksanong Pongthorn;
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作者单位

National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency (NSTDA);

King Mongkut’s University of Technology North Bangkok;

Suranaree University of Technology;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
3D printing; Antimicrobial; Composite; Electrical properties;

Multi-material additive manufacturing of MWCNT-based conductive photocurable resin and its antimicrobial property

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