C-13 NMR SEQUENCE-ANALYSIS OF ETHYLENE-ALPHA-METHYLSTYRENE COPOLYMERS

被引：2

作者：

KANEZAKI, T ^{[1
]}

KIJIMA, M ^{[1
]}

KUME, K ^{[1
]}

SATO, K ^{[1
]}

ASAKURA, T ^{[1
]}

机构：

[1] TOKYO UNIV AGR & TECHNOL,DEPT BIOTECHNOL,KOGANEI,TOKYO 184,JAPAN

来源：

POLYMER | 1994年 / 35卷 / 12期

关键词：

C-13; NMR; ETHYLENE-ALPHA METHYLSTYRENEFID-INADEQUATE;

D O I：

10.1016/0032-3861(94)90373-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Ethylene-alpha-methylstyrene (EMS) copolymers were prepared by anionic polymerization using butyllithium and N,N,N',N'-tetramethylethylenediamine (TMEDA) as an initiator. The C-13 n.m.r. spectra of EMS copolymers are observed and assigned mainly using two kinds of n.m.r. techniques: C-13 distortionless enhancement by polarization transfer (d.e.p.t.) and the two-dimensional incredible natural abundance double quantum transfer experiment (2D-INADEQUATE). The monomer composition, the sequence distribution in the triad level and the number-average sequence length are determined on the basis of the C-13 n.m.r. results.

引用

页码：2523 / 2527

页数：5

共 14 条

[1] ANDERSON WS, 1966, AM CHEM SOC POLYM PR, V7, P126
[2] PRIMARY AND SECONDARY STRUCTURES OF SYNTHETIC-POLYMER SYSTEMS AS STUDIED BY C-13 NMR-SPECTROSCOPY
ANDO, I
YAMANOBE, T
ASAKURA, T
[J]. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY, 1990, 22 : 349 - 400
[3] C-13 NMR SPECTRAL ASSIGNMENTS OF REGIOIRREGULAR POLYPROPYLENE DETERMINED FROM 2-DIMENSIONAL INADEQUATE SPECTRA AND CHEMICAL-SHIFT CALCULATIONS
ASAKURA, T
NAKAYAMA, N
DEMURA, M
ASANO, A
[J]. MACROMOLECULES, 1992, 25 (19) : 4876 - 4881
[4] NATURAL ABUNDANCE C-13-C-13 COUPLING OBSERVED VIA DOUBLE-QUANTUM COHERENCE
BAX, A
FREEMAN, R
KEMPSELL, SP
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1980, 102 (14) : 4849 - 4851
[5] ASSIGNMENT OF C-13 NMR-SPECTRA VIA DOUBLE-QUANTUM COHERENCE
BAX, A
FREEMAN, R
FRENKIEL, TA
LEVITT, MH
[J]. JOURNAL OF MAGNETIC RESONANCE, 1981, 43 (03) : 478 - 483
[6] Carman C J, 1971, RUBBER CHEM TECHNOL, V44, P781, DOI [10.5254/1.3544794, DOI 10.5254/1.3544794]
[7] ELGERT KF, 1974, POLYMER, V16, P467
[8] CHARACTERIZATION OF SEQUENCE DISTRIBUTION IN COPOLYMERS
HARWOOD, HJ
RITCHEY, WM
[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER LETTERS, 1964, 2 (6PB): : 601 - &
[9] HAYASHI T, 1989, POLYM J, V20, P895
[10] TWO-DIMENSIONAL INADEQUATE NMR-SPECTRA OF ETHYLENE PROPYLENE COPOLYMER
HIKICHI, K
HIRAOKI, T
IKURA, M
HIGUCHI, K
EGUCHI, K
OHUCHI, M
[J]. POLYMER JOURNAL, 1987, 19 (11) : 1317 - 1320

← 1 2 →