Lötzsch, Detlef and Ruhmann, Ralf and Seeboth, Arno (2013) Thermochromic Biopolymer Based on Natural Anthocyanidin Dyes. Open Journal of Polymer Chemistry, 03 (03). pp. 43-47. ISSN 2165-6681
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Abstract
Recently a novel thermochromic poly(lactic acid) (PLA)-composite material was presented. Depending on temperature the incorporated anthocyanidin dye was found to be present either in its neutral or anionic anhydrobase form. A reversible formation of PLA-dye complexes triggered by conformational changes of the polymer backbone was proposed to explain this thermochromic effect. In order to study the influence of the dye structure on the PLA-dye complex formation and on the thermochromic properties of the PLA-composite material a variation of the anthocyanidin dye structure was investigated. The results indicate that a hydroxyl group in 3’-position of the anthocyanidin dye resulting in the presence of adjacent hydroxyl groups is mandatory for the PLA-anthocyanidin dye complex formation and thus for the occurrence of thermochromism.
Item Type: | Article |
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Subjects: | Middle East Library > Chemical Science |
Depositing User: | Unnamed user with email support@middle-eastlibrary.com |
Date Deposited: | 24 Jun 2023 07:13 |
Last Modified: | 21 Sep 2024 04:26 |
URI: | http://editor.openaccessbook.com/id/eprint/1184 |