Journal
POLYMERS
Volume 9, Issue 3, Pages -Publisher
MDPI AG
DOI: 10.3390/polym9030100
Keywords
poly(lactic acid); nanosilver-doped multiwall carbon nanotube; antibacterial property; cytotoxicity; bionanocomposites
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Funding
- National Natural Science Foundation of China
- Ratchadapisek Sompote Fund for Postoctoral Fellowship, Chulalongkon University
- Apex Nanotek Co. Ltd
- Green Miracle Technology Co. Ltd
- Grabio Greentech Corporation
- Fabric King Textile Co. Ltd
- Ministry of Economic Affairs
- National Science Council
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A novel method was used to synthesize a nanosilver-doped multiwall carbon nanotube (MWCNT-Ag), and subsequently, the novel poly(lactic acid) (PLA)- and MWCNT-Ag-based biocompatible and antimicrobial nanocomposites were prepared by melt blending. Based on energy dispersive X-ray spectrometry images, an MWCNT-Ag was successfully synthesized. The effect of the MWCNT-Ag on the PLA bionanocomposites was investigated by evaluating their thermal and mechanical properties, antifungal activity, and cytotoxicity. The nanocomposites exhibited a high degree of biocompatibility with the MWCNT-Ag content, which was less than 0.3 phr. Furthermore, tensile strength testing, thermogravimetric analysis, differential scanning calorimetry, and antibacterial evaluation revealed that the tensile strength, thermostability, glass transition temperature, and antibacterial properties were enhanced by increasing the MWCNT-Ag content. Finally, hydrolysis analysis indicated that the low MWCNT-Ag content could increase the packing density of PLA.
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