Mid- and Near-Infrared Investigation of Molecular Orientation in Elastomeric Networks

$29.00 plus tax (Refund Policy)

Buy Article:

Abstract:

Segmental orientation in uniaxially stretched poly(dimethylsiloxane) (PDMS) elastomeric networks is investigated by Fourier transform infrared dichroism. Precise determination of the dichroic effects, in the mid- as well as in the near-infrared range, is obtained by polarization modulation of the incident electromagnetic field. Near-infrared spectroscopy gives the possibility of analyzing samples of several millimeters in thickness because of the reduced intensity of the absorptions. Dichroic effects measured in the near-infrared region are higher than those obtained in the mid-infrared range, thus suggesting that the vibrations are less coupled at high energies. Introduction of reinforcing filler such as silica in PDMS networks leads to an increase in orientation, attributed to the additional cross-links produced by the filler. Index Headings: Infrared linear dichroism; Polarization modulation; Near-infrared; Polydimethylsiloxane.

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702001949636

Publication date: March 1, 2000

More about this publication?
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more