Determination of unsaturation of synthetic and natural rubbers by means of iodine monochloride
作者:
T. S. Lee,
I. M. Kolthoff,
Mary Anne Mairs,
期刊:
Journal of Polymer Science
(WILEY Available online 1948)
卷期:
Volume 3,
issue 1
页码: 66-84
ISSN:0022-3832
年代: 1948
DOI:10.1002/pol.1948.120030109
出版商: Interscience Publishers, Inc.
数据来源: WILEY
摘要:
AbstractPrecise analytical methods are developed using iodine monochloride for the determination of unsaturation in polybutadiene and polyisoprene and their copolymers with styrene. The complicating side reactions, splitting out and substitution, as well as the influence of the solvent employed are investigated in detail. It is concluded that GR‐S at various conversions has the theoretical unsaturation. Emulsion polybutadiene exhibits 97 to 98% of the theoretical unsaturation, emulsion polyisoprene 97% sodium polybutadiene 92%, and sodium polyisoprene 85%. The amount of unsaturation in these last two polymers as well as in the sodium copolymer of butadiene and styrene (75:25) is considerable less than theoretically expecte
点击下载:
PDF
(1246KB)
返 回