期刊
PROGRESS IN ORGANIC COATINGS
卷 159, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2021.106391
关键词
UV-curable coatings; Self-healing; Dynamic covalent bond; Rubber seed oil; Itaconic acid
资金
- National Natural Science Foundation of China [31822009, 31770615]
- Fundamental Research Funds of CAF [CAFYBB2020QA005]
The development of self-healing UV-curable coatings from biorenewable resources shows good self-healing properties, high biobased contents, and high performance.
Development of self-healing UV-curable coatings from biorenewable resources is of great significance for sustainable development and environmental protection. In this work, a biobased UV-curable oligomer was firstly synthesized by ring-opening reaction of epoxidized rubber seed oil with glycidyl methacrylate-modified itaconic acid precursor. Chemical structure of the obtained oligomer was then characterized by FT-IR, 1H NMR, and gel permeation chromatography. Subsequently, a series of UV-curable coatings were prepared by cophotopolymerization of the oligomer with the hydroxyethyl methacrylate diluent. UV-curing behaviors, biobased contents, and ultimate properties such as thermal, mechanical, and coating properties were studied. Furthermore, dynamic transesterification reactions were activated at elevated temperatures in the presence of a Zinc catalyst, thus self-healing, shape memory, malleable, and recyclable properties were further investigated. Notably, the obtained UV-curable coatings demonstrated good self-healing properties (86-100% at 200 degrees C for 30 min), high biobased contents (45.4-72.3%), and high performance (tensile strength and glass transition temperature up to 22.4 MPa and 119.2 degrees C, respectively).
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