Localisation and characterization by TEM and EELS of manganese species during graft copolymerization of acrylic acid onto sawdust using KMnO4 as initiator

被引：5

作者：

Marchetti, V

Ghanbaja, J

Gérardin, P

Loubinoux, B

机构：

[1] Univ Nancy 1, LERMAB, Equipe Chim Organ & Microbiol, Fac Sci, F-54506 Vandoeuvre Nancy, France

[2] Univ Nancy 1, Serv Commun Microscopie Elect Transmiss, Fac Sci, F-54506 Vandoeuvre Nancy, France

来源：

HOLZFORSCHUNG | 2000年 / 54卷 / 05期

关键词：

electron energy loss spectroscopy; graft copolymerization; manganese; sawdust; transmission electron microscopy;

D O I：

10.1515/HF.2000.093

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Transmission electron microscopy (TEM) observations of sawdust after pretreatment with KMnO4 were carried out. It was found that manganese is principally located on the S3 layers involving graft copolymerization in the lumen rather than in the cell wall. The results obtained by EELS show that MnO2 deposited on wood participates in the grafting mechanism of acrylic acid through formation of radical intermediates during oxidation of wood which initiate free radical chain transfer reaction onto wood.

引用

页码：553 / 556

页数：4

共 9 条

[1]

Egerton R.F, 1986, EELS in the Electron Microscope

[2]

KURUTA H, 1993, PHYS REV B, V48, P2102

[3]

LANFANG H, 1989, J APPL POLYM SCI, V37, P2283

[4] STUDY OF THE L23 EDGES IN THE 3D TRANSITION-METALS AND THEIR OXIDES BY ELECTRON-ENERGY-LOSS SPECTROSCOPY WITH COMPARISONS TO THEORY [J].