The diffusion, size and location of added silver grains in the cell walls of Swedish pine, Pinus sylvestris |
| |
Authors: | L Wallström K A H Lindberg |
| |
Institution: | Division of Wood Material Science, Lule? University of Technology, Skeria 3, 931 87 Skellefte?, Sweden, SE
|
| |
Abstract: | The size and location of silver particles in K-glycerate/AgNO3 impregnated Swedish pine, green wood as well as high temperature dried, have been studied using TEM micrographs.
The diameter of the silver particles was found to be 2–20 nm in the impregnated green wood and as large as 1000 nm (major
axis) for the ellipsoid-shaped silver clusters in the impregnated dried wood. Studying the projected area of the silver particles
in impregnated green wood indicated that there are a lot of particles (40%) in the compound middle lamella with fewer particles
in the S2 (6–8%), S1 (4%) and S3 (2%) layers. The average distance between the silver particles, 50 nm (S2-layer), in impregnated green wood shows that the impregnant is distributed in the cell wall at the microfibrilar level. Experimental
results show that the fastest diffusion path into the cell wall is from the lumen over the pit membrane through the compound
middle lamella and not from the lumen through the secondary wall layer S3.
Received 11 January 1998 |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|