Solid state 13C nuclear magnetic resonance for polyguanidines

被引：10
|
作者：
Lim, AR [1 ]
Kim, JH
Novak, BM
机构：
[1] Jeonju Univ, Dept Phys, Jeonju 560759, South Korea
[2] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA
来源：
POLYMER | 2000年 / 41卷 / 07期
关键词：
structural analysis; NMR spectroscopy; spin-lattice relaxation;
D O I：
10.1016/S0032-3861(99)00431-0
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 structure and variations in dynamic motions of three polyguanidines possessing different side chains were studied by C-13 CP/MAS NMR. From these results, the structures of the polyguanidines were confirmed, and the C-13 spin-lattice relaxation times in the rotating frame were measured. The polyguanidine backbone mobilities were measured as a function of size and chemical make up (aliphatic vs. aromatic). The main-chain carbon of polyguanidine (II) with aromatic side chains has a higher activation energy, 23.12 KJ/mol, than the polyguanidine (1) with aliphatic side chains, 19.76 KJ/mol. Also, the activation energy of the main-chain carbons of polyguanidine (II) and (LII) with aromatic side chains was found to depend on the size of side chains. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：2431 / 2438
页数：8
相关论文
共 50 条
  • [1] Blend compatibility study by solid-state 13C nuclear magnetic resonance
    Tavares, MIB
    Mendes, LC
    [J]. POLYMER TESTING, 2000, 19 (04) : 399 - 404
  • [2] Measuring the crystallinity index of cellulose by solid state 13C nuclear magnetic resonance
    Sunkyu Park
    David K. Johnson
    Claudia I. Ishizawa
    Philip A. Parilla
    Mark F. Davis
    [J]. Cellulose, 2009, 16 : 641 - 647
  • [3] Measuring the crystallinity index of cellulose by solid state 13C nuclear magnetic resonance
    Park, Sunkyu
    Johnson, David K.
    Ishizawa, Claudia I.
    Parilla, Philip A.
    Davis, Mark F.
    [J]. CELLULOSE, 2009, 16 (04) : 641 - 647
  • [4] Characterization of polyimides by 13C and 1H solid state nuclear magnetic resonance
    Varner, SJ
    Vold, RL
    Hoatson, GL
    [J]. SOLID STATE NUCLEAR MAGNETIC RESONANCE, 1998, 12 (2-3) : 71 - 85
  • [5] 13C Solid-state Nuclear Magnetic Resonance Investigations of Gas Hydrate Structures
    Meng Qing-Guo
    Liu Chang-Ling
    Ye Yu-Guang
    [J]. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY, 2011, 39 (09) : 1447 - 1450
  • [6] 13C Solid State Nuclear Magnetic Resonance and μ-Raman Spectroscopic Characterization of Sicilian Amber
    Barone, Germana
    Capitani, Donatella
    Mazzoleni, Paolo
    Proietti, Noemi
    Raneri, Simona
    Longobardo, Ugo
    Di Tullio, Valeria
    [J]. APPLIED SPECTROSCOPY, 2016, 70 (08) : 1346 - 1355
  • [7] A solid-state 13C nuclear magnetic resonance study of cured, unsaturated polyester resins
    Hietalahti, K
    Root, A
    Skrifvars, M
    Sundholm, F
    [J]. JOURNAL OF APPLIED POLYMER SCIENCE, 1999, 73 (04) : 563 - 571
  • [8] Study of the characterization and curing of benzoxazines using 13C solid-state nuclear magnetic resonance
    Russell, VM
    Koenig, JL
    Low, HY
    Ishida, H
    [J]. JOURNAL OF APPLIED POLYMER SCIENCE, 1998, 70 (07) : 1413 - 1425
  • [9] Interactions of organic liquids with coals:: Analysis by solid-state 13C nuclear magnetic resonance
    Kawashima, H
    Saito, I
    [J]. ENERGY & FUELS, 2004, 18 (06) : 1723 - 1731
  • [10] A Molecular Budget for a Peatland Based Upon 13C Solid-State Nuclear Magnetic Resonance
    Moody, Catherine S.
    Worrall, Fred
    Clay, Gareth D.
    Burt, Tim P.
    Apperley, David C.
    Rose, Rob
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES, 2018, 123 (02) : 547 - 560
12345