Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 45,
  • Issue 10,
  • pp. 1726-1732
  • (1991)

FT-IR Analysis of the Monomer Sequence Distribution of Styrene-Acrylonitrile Copolymers

Not Accessible

Your library or personal account may give you access

Abstract

The infrared spectra for a series of random styrene-acrylonitrile (SAN) copolymers of various compositions were analyzed to determine the dependence of the individual spectral peaks on the copolymer composition. Correlations were established to relate changes in the peak positions and intensities to changes in the copolymer composition and monomer sequence distribution. It was found that a number of peaks shift to higher frequencies as the amount of acrylonitrile in the SAN copolymer is increased while others shift to lower frequencies. It was also found that some peak positions are unaffected by changes in the copolymer composition, The intensities of the spectral peaks were also analyzed as a function of the copolymer content by plotting changes in the intensity values against the number fraction of each of the possible monad, dyad, and triad structures. A peak was then determined to result from a given microstructure if there exists a positive linear relationship between the peak intensity and the number fraction of this microstructure.

PDF Article
More Like This
Transformed world of industrial infrared analysis

Jeanette G. Grasselli and Lynn E. Wolfram
Appl. Opt. 17(9) 1386-1399 (1978)

Optical properties of polycarbonate/styrene-co-acrylonitrile blends: effects of molecular weight of the matrix

Ping Yi, Ying Xiong, and Shaoyun Guo
Appl. Opt. 54(34) 10000-10008 (2015)

Effect of the morphology on the anisotropic light scattering of polycarbonate (PC)/poly(styrene-co-acrylonitrile) (SAN)(70/30) blend

Xianming Dong, Ying Xiong, Guangshun Chen, and Shaoyun Guo
Appl. Opt. 54(4) 608-614 (2015)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved