Accession Number:

AD0684835

Title:

POLYCHLOROPRENE STRUCTURE STUDY. II. A QUANTITATIVE INFRARED SPECTROSCOPIC METHOD FOR POLYCHLOROPRENE MICROSTRUCTURE INVESTIGATION,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1968-11-15

Pagination or Media Count:

13.0

Abstract:

A quantitative ir spectroscopic determination was developed using low-mol.-wt. compds. cis-4-chloro-4-octene, cis-5-chloro-5 decene, trans-4-chloro-4-octene, and 2-chloro-1-hexens as model polychloroprene I units representing various modes of monomer unit addn. The concn. of representing various modes of monomer unit addn. The concn. of 1,4-cis, 1,4-trans, and 3,4-addn. modes was determined using corresponding 1653, 1662, and 1636cm max., respectively. The 1,2-addn. units were determined by the difference. The rubbers Nairit, Nairit KR, Nairit P, and Neoprene W prepd. with different regulators had 0.5 1,4-cis 12 1,4-trans 87 3,4 and 0.5 1,2 addn. units. Apparently the structure of the I chain prepd. by a free-radical mechanism is independent of the nature of the polymn. regulator.

Subject Categories:

  • Elastomers and Rubber
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE