Using the solubility parameter to explain disperse dye sorption on polylactide

✍ Scribed by David Karst; Yiqi Yang

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 107 KB
• Volume: 96
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.21456

✦ Synopsis

Abstract

The solubility parameters of polylactide (PLA), poly(ethylene terephthalate) (PET), and various disperse dyes calculated according to the group contribution method were used to explain the low sorption of some disperse dyes on PLA but the high sorption of the same dyes on PET. It was found that the dyes with high sorption on PLA tended to have solubility parameters near that of PLA, which has a lower solubility parameter than that of PET. It was also found that the solubility parameter, which was calculated based on cohesive energy and molar volume at 25°C, was more appropriate for explaining dyeings at lower temperature, 100 and 110°C, than those at higher temperature, 130°C. Based on the finding that dyes with solubility parameters near that of PLA tend to have high sorption on PLA, general structures for disperse dye that may have high sorption on PLA were proposed. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 416–422, 2005