Development of an easily deinkable copy toner using soy-based copolyamides

Autor: Xiao-Dong Fan, Wallace W. Carr, Yulin Deng, Peter H. Pfromm, John F. Waterhouse
Rok vydání: 1999
Předmět:
Zdroj: Journal of Applied Polymer Science. 74:1563-1570
ISSN: 1097-4628
0021-8995
DOI: 10.1002/(sici)1097-4628(19991107)74:6<1563::aid-app31>3.0.co;2-0
Popis: To develop an easily deinkable toner for office copiers and laser printers, a series of homo- and copolyamide toner resins were synthesized via condensation polymerization of a soy-based dimer acid, 1,4-phenylenediamine, and L-tyrosine (an α-amino acid). The thermal properties of the resins were examined using differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). It was found that the glass transition temperature (Tg), melting point (Tm), decomposition temperature (Td), and crystallinity of the copolyamides were remarkably decreased as the content of L-tyrosine was increased. By using both homo- and copolyamides as binders, respectively, two dual-component toners were developed. The triboelectrical charge, particle size, and particle-size distribution of these toners were examined. The printing trials demonstrated that the images of the soy-based toners are similar to those of commercially available toners. However, because of the low crystallinity and high water-uptake ability of the amino acid-containing polyamide, the copolymer is swellable in an alkaline solution. Initial results from flotation deinking suggest that the amino acid-containing toners are more easily deinked, likely due to their high swellability. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 1563–1570, 1999
Databáze: OpenAIRE
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