NDLI: Mechanical and Film Properties of Telechelic Methacrylic Polysiloxanes with Cycloaliphatic Substituents Groups for UV-Curable Applications

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Mechanical and Film Properties of Telechelic Methacrylic Polysiloxanes with Cycloaliphatic Substituents Groups for UV-Curable Applications

Content Provider	Springer Nature Link
Author	Chakraborty, Ruby Soucek, Mark D.
Copyright Year	2010
Abstract	Siloxanes with either methyl, cyclopentyl, or cyclohexyl groups were functionalized with methacrylate groups, then UV-cured using a free radical photo-initiator and a reactive diluent. Hexanediol dimethacrylate (0.1 wt%) was used as the reactive diluent. After curing, the mechanical, the viscoelastic, the coating, and the release properties of the cured films were studied. In addition, the oxygen permeability and the X-ray diffraction scans were evaluated. The crosslink density reduced with increase in siloxane substituent size. The oxygen permeability was dependent on crosslink density, and increased with increasing substituent size. The increase in permeability, and thus free volume, was supported by X-ray studies which showed an increase in d-spacing with increasing alkyl size. The hardness, adhesion, and solvent resistance increased as the size of the substituent increased (methyl to cyclopentyl to cyclohexyl) in the siloxane backbone. The adhesion and re-adhesion forces increased with an increase in size of the backbone substituents. There was also an increase in the advancing and the receding contact angles with the increase in substituent size.
Starting Page	61
Ending Page	69
Page Count	9
File Format	PDF
ISSN	1876990X
Journal	Silicon
Volume Number	2
Issue Number	1
e-ISSN	18769918
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-05-06
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Telechelic Viscoelastic properties Fracture toughness Release properties Adhesion Nanotechnology Biomedical Engineering Polymer Sciences Organic Chemistry Materials Science Inorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials

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