Beilstein J. Org. Chem.2014,10, 2623–2629, doi:10.3762/bjoc.10.274
-soluble PRX crosslinker can be applied to design degradable photosetting plastics potentially used in the industrial or biomedical field.
Keywords: α-cyclodextrin; compositeresin; disulfide; polyrotaxane; Vickers hardness; Introduction
Polyrotaxane (PRX) is a supermolecule containing host molecules
, the introduction of a stimuli-responsive and degradable crosslinkable resin monomer into the compositeresin, the hardness of the polymerized resin composite could be modulated under specific conditions. Because the degradable PRX structure is a suitable molecular platform for an efficient degradation
the change of hardness was estimated by means of the Vickers hardness test. As shown in Figure 4, the initial Vickers hardness of the hardened plastic was 2.9 N/mm2. Generally, conventional dental compositeresin shows around 15 N/mm2 [24]. Therefore, the prepared PRX-based thermosetting plastic
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Graphical Abstract
Scheme 1:
Overall concept of the degradable PRX crosslinker.