If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

An FT-IR Study of the Water Absorbed in Kevlar-49® Fibers

$29.00 plus tax (Refund Policy)

Buy Article:

Abstract:

Diffuse reflectance Fourier transform infrared spectroscopy has been used in order to detect absorbed water hydrogen-bonded to Kevlar-49® fibers. Varying amounts of KBr overlayers were used on the top of each sample in order to increase the surface selectivity of the technique. Three different O-H stretching vibrations of absorbed water were detected in the fibers exposed to saturated water-vapor atmosphere. Two peaks at 3640 and 3560 cm−1 are attributed to absorbed water that is weakly hydrogen-bonded to amide groups of the polymer. A broad absorption around 3450 cm−1 is characteristic of liquid-like water clustered in microvoids and other sites inside the fibers. The spectra of dried Kevlar-49® fibers show an unbonded amide N-H stretching peak at 3431 cm−1, indicative of regions with less perfect chain packing. At least part of these groups hydrogen-bond with absorbed water, depending on their availability.

Keywords: Infrared; Molecular structure; Reflectance spectroscopy; Surface analysis

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702864508430

Affiliations: Macromolecular Science Department, Case Western Reserve University, Cleveland, Ohio 44106

Publication date: August 1, 1986

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