Characterization
of poly(lactic acid) by size exclusion chromatography, differential refractometry,
light scattering and thermal analysis |
| |
Authors: | T Malmgren J Mays M Pyda |
| |
Institution: | 1. Department of Chemistry, Knoxville, USA, 37966-1600, TN
|
| |
Abstract: | A number
of experimental techniques are employed to characterize physical and thermal
properties of poly(lactic acid), PLA. To characterize PLA in terms of molecular
mass and molecular mass distribution, size exclusion chromatography was used.
The value of the specific refractive index increment was measured by differential
refractometry. The thermal properties of semicrystalline PLA were measured
by standard and temperature-modulated differential scanning calorimetry. The
thermal stability of PLA was monitored by measuring the changes of mass using
thermogravimetric analysis. The mechanical properties of amorphous PLA were
measured by dynamic mechanical analysis and the results were discussed and
compared with DSC in the glass transition region. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|