A Novel Liquid-Crystalline Vinylcyclopropane-Derivative Bearing Cholesterol: Synthesis and Polymerization

Casper, Patrick; Ritter, Helmut

doi:10.1081/ma-120017254

Cited by 6 publications

(1 citation statement)

References 6 publications

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“…Thus, for example, LC VCP-derivatives bearing cholesterol were synthesised ( Figure 17). [50,51] For the cross-linking monomer VCP-1, a polymerisation shrinkage of only 0.2 vol.-% was determined, compared to 4.0 vol.-% of the corresponding dimethacrylate. Unfortunately, VCP-1 formed the mesophase at 32 8C and therefore was a solid at room temperature.…”

Section: Cyclic Monomers For Low-shrinking Dental Restorative Compositesmentioning

confidence: 99%

Recent Developments of New Components for Dental Adhesives and Composites

Moszner¹,

Salz²

2007

Macro Materials & Eng

204

110

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The currently used commercial self‐etching enamel‐dentin adhesives and restoratives composites are mainly based on a mixture of various monofunctional and cross‐linking dimethacrylates. New developments of enamel‐dentin adhesives concern the improvement of technique insensitivity and storage stability. Improvements of restorative composites are focused on the reduction of the polymerisation shrinkage, as well as the improvement of wear resistance, biocompatibility, and processing properties. In the past five years, many research efforts have been carried out to develop new monomers and tailor‐made components for filling materials, such as fillers or initiators. New phosphonic acid ether acrylates and cross‐linking bis(acrylamide)s enable the preparation of self‐etching enamel‐dentin adhesives with improved storage stability. With free‐radically polymerisable cyclic monomers, such as bicyclic cyclopropyl acrylates or cyclic allyl sulfides, low‐shrinkage storage‐stable restorative composites could be prepared. In case of the cationic polymerisable cyclic monomers, like siloxane‐based cycloaliphatic epoxides, the lower curing rate, stronger exothermic effect and lower curing depth compared to dimethacrylate‐based composites presently prevent their dental application. Designed methacrylates with tailor‐made properties and sol‐gel polycondensates can also contribute to the improvement of the currently used restorative composites. Radical polymerisable dental materials are initiated by light curing and by redox initiator systems. Under acidic conditions amine containing initiator systems are deactivated by acid‐base reaction. Non amine‐based initiators have to be developed for acidic monomer containing dental materials. The use of discrete nano‐filler particles mainly concerns the reinforcement and, in some cases, the increase of X‐ray opacity of composite filling materials.magnified image

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Section: Cyclic Monomers For Low-shrinking Dental Restorative Compositesmentioning

confidence: 99%

Recent Developments of New Components for Dental Adhesives and Composites

Moszner¹,

Salz²

2007

Macro Materials & Eng

204

110

View full text Add to dashboard Cite

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Photopolymerizable Systems

Guvendiren

Purcell

Burdick

2012

Polymer Science: A Comprehensive Reference

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Radical Ring-Opening Polymerization: Scope, Limitations, and Application to (Bio)Degradable Materials

et al. 2017

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Cyclic monomers bearing either vinyl or exomethylene groups have the ability to be polymerized through a radical pathway via a ring-opening mechanism (addition-fragmentation process), leading to the introduction of functionalities in the polymer backbone. Radical ring-opening polymerization (rROP) combines the advantages of both ring-opening polymerization and radical polymerization, that is the preparation of polymers bearing heteroatoms in the backbone but with the ease and robustness of a radical process. This current review presents a comprehensive description of rROP by detailing: (i) the various monomers that polymerize through rROP; (ii) the main parameters that govern the rROP mechanism; (iii) the copolymerization by conventional or controlled/living radical polymerization between rROP monomers and traditional vinyl monomers to obtain copolymers with advanced properties; (iv) the different applications (low shrinkage materials and preparation of (bio)degradable materials) of rROP monomer-containing materials, and (v) the main alternatives to rROP to induce degradability to materials obtained by a radical polymerization.

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A Novel Liquid-Crystalline Vinylcyclopropane-Derivative Bearing Cholesterol: Synthesis and Polymerization

Cited by 6 publications

References 6 publications

Recent Developments of New Components for Dental Adhesives and Composites

Recent Developments of New Components for Dental Adhesives and Composites

Photopolymerizable Systems

Radical Ring-Opening Polymerization: Scope, Limitations, and Application to (Bio)Degradable Materials

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