CARBON-13 NUCLEAR MAGNETIC RESONANCE ANALYSIS OF POLY(PROPYLENE OXIDE)

被引：54
|
作者：
SCHAEFER, J
机构：
[1] Central Research Department, Monsanto Company, St. Louis
来源：
MACROMOLECULES | 1969年 / 2卷 / 05期
关键词：
D O I：
10.1021/ma60011a016
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The white noise spin-decoupled, natural abundance 13C nmr spectra of whole and fractionated poly(propylene oxide) have been obtained at 25.1 MHz. The spectra of the main-chain carbons are interpreted in terms of the structural and stereoregularities and defects in the chain backbone. The nmr analysis indicates that 89% of the crystalline fraction (mp 60°) and 49% of the noncrystalline fraction of this diethylzinc-catalyzed polymer consist of isotactic, structurally regular dyads. © 1969, American Chemical Society. All rights reserved.
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页码：533 / &
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