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Wednesday, 18 September 2019
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Raw materials & technologies, Technologies, Functional coatings

Backbone-degradable polymers prepared by chemical vapour deposition

Wednesday, 7 December 2016

A team of international researchers demonstrate, for the first time, a backbone-degradable polymer directly synthesised via chemical vapour deposition (CVD).

Backbone-degradable polymers prepared by chemical vapour deposition. Source: KIT

Backbone-degradable polymers prepared by chemical vapour deposition. Source: KIT

Polymers prepared by CVD polymerisation have found broad acceptance in research and industrial applications. However, their intrinsic lack of degradability has limited wider applicability in many areas, such as biomedical devices or regenerative medicine.

Access to a wide range of reactive polymer coatings

The CVD co-polymerisation of [2.2]para-cyclophanes with cyclic ketene acetals, specifically 5,6-benzo-2-methylene-1,3-dioxepane (BMDO), results in well-defined, hydrolytically degradable polymers, as confirmed by FTIR spectroscopy and ellipsometry. The degradation kinetics are dependent on the ratio of ketene acetals to [2.2]para-cyclophanes as well as the hydrophobicity of the films. These coatings address an unmet need in the biomedical polymer field, as they provide access to a wide range of reactive polymer coatings that combine interfacial multifunctionality with degradability.

The study is published in: Angewandte Chemie.

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