Please use this identifier to cite or link to this item:
|Title:||Effect of poly(D-lactic acid) and cooling temperature on heat resistance and antibacterial performance of stereocomplex poly(L-lactic acid)|
Faculty of Environment and Resource Studies, Mahidol University
King Mongkut s University of Technology Thonburi
|Citation:||Journal of Applied Polymer Science. (2020)|
|Abstract:||© 2020 Wiley Periodicals, Inc. Stereocomplex nucleated polylactic acid was prepared by the addition of poly(D-lactic acid) (PDLA) in poly(L-lactic acid) (PLLA) under various cooling temperatures by monitoring the mechanical properties and heat resistance. Antibacterial performance against the growth of Escherichia coli on PLLA/PDLA doped with various contents of 2-hydroxypropyl-3-piperazinyl-quinoline carboxylic acid methacrylate (HPQM) was also evaluated. The results suggested that a small addition of PDLA generated stereocomplex crystals while increasing cooling temperature resulted in homo crystals formation in PLLA. The incorporation of PDLA with high cooling temperature increased the heat deflection temperature, impact resistance, and tensile modulus, but decreased the antibacterial performance against E. coli. The addition of PDLA at 2.0 wt% in PLLA at cooling temperature at 80°C showed a synergistic effect to obtain an exceptionally high heat deflection temperature up to 164°C. HPQM was, for the first time, introduced as antibacterial agent in PLLA with an optimum dosage of 1750 ppm. © 2020 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48970.|
|Appears in Collections:||Scopus 2020|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.