Self-healing, recyclable, and removable UV-curable coatings derived from tung oil and malic acid.
In: Green Chemistry, Jg. 23 (2021-08-21), Heft 16, S. 5875-5886
Online
academicJournal
Zugriff:
This study reports the development of super "green" smart coatings by integrating renewable resources, microwave-assisted synthesis, and dynamic covalent chemistry into UV-curable coatings. First, a novel UV-curable oligomer (TMG) was synthesized from renewable tung oil (TO) via microwave technology, and a biobased reactive diluent (MM) was derived from malic acid under ambient conditions. Afterward, a set of UV-curable coatings containing plentiful hydroxyl and ester groups were prepared by photo-polymerizing the TMG oligomer with the MM diluent. The resulting coatings demonstrated a high biobased content (49.2%–58.1%), good mechanical and thermal properties (e.g. Tg of 70.6–78.6 °C), and excellent coating adhesion and flexibility. Furthermore, by activating dynamic transesterification reactions at elevated temperatures with a zinc catalyst, the resulting UV-curable materials exhibited excellent repairability, removability, recyclability, malleability, and shape memory properties. For instance, the TMG material containing 10% of MM demonstrated a crack repair efficiency of 92.5%, a welding efficiency of tensile strength up to 171.8%, a recycling efficiency of tensile strength up to 404.3%, and a shape fixity ratio of 98.2%. [ABSTRACT FROM AUTHOR]
Titel: |
Self-healing, recyclable, and removable UV-curable coatings derived from tung oil and malic acid.
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Autor/in / Beteiligte Person: | Zhang, Jinshuai ; Huang, Jia ; Zhu, Guoqiang ; Yu, Xixi ; Cheng, Jianwen ; Liu, Zengshe ; Hu, Yun ; Shang, Qianqian ; Liu, Chengguo ; Hu, Lihong ; Zhou, Yonghong |
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Zeitschrift: | Green Chemistry, Jg. 23 (2021-08-21), Heft 16, S. 5875-5886 |
Veröffentlichung: | 2021 |
Medientyp: | academicJournal |
ISSN: | 1463-9262 (print) |
DOI: | 10.1039/d1gc01726h |
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