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Sunday, 22 September 2019
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Raw materials & technologies, Technologies, UV/EB Coatings

Advances in photopolymerisations initiated by thioxanthones

Friday, 18 September 2015

Photochemistry plays a central role in synthetic polymer research.

The study aims at shining a light on an adaptable photoinitiator. Source: JMG/pixelio.de

The study aims at shining a light on an adaptable photoinitiator. Source: JMG/pixelio.de

Aromatic ketones, examples of which include benzophenone, thioxanthone, camphorquinone, among others, are renowned for their excellent optical characteristics and have been extensively utilised for photochemical induction of polymerisation processes. Of particular interest is thioxanthone due to its adaptability for bearing different functionalities and its applications in various modes of photopolymerisation, in which it accomplishes photoinitiation in conjunction with other co-initiator compounds; a behaviour that is referred to as bi-molecular photoinitiation.

Mechanistic behaviour

In a paper, researchers review the photochemistry of thioxanthone-based systems and their use in different modes of photoinitiated polymerisations. Citing examples from the literature, the development of various photoinitiating systems based on thioxanthones along with an understanding of their mechanistic behaviour has been elucidated previously.

The study is published in: Polymer Chemistry, Issue 37 2015.

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