Relaxation Properties of Carboxymethylated Wood plus Metallic Salts in Aqueous Solution

Relaxation Properties of Carboxymethylated Wood plus Metallic Salts in Aqueous Solution Introduction We reported that metal ion binds to the side-chain carboxyl group of molecular chain of half-esterified or etherified wood, and that the mobility of modified wood components, in particular, of cellulose mainchains, changes remarkably by the introduction of metal ions (Nakano 1990, 1991). Furthermore, it was clarified that divalent and trivalent metal ions form crosslinks between the main-chains, while monovalent metal ions do not. Factor related to the mobility are the charge (valency), the radius, and the amount of metal ion. The relationship among them is represented by a simple equation (Nakano 1991). If the bonding between metal ion and the side-chain carboxyl group of molecular chain of Carboxymethylated wood is ionic, crosslinking can be broken in water or acid solution because of dissociation of containing metal ions. The interaction between mainchains is then influenced by both nature of metal ion and the degree of ionization. In this work, in order to clarify the effects caused by dissociation of metal ion in water, stress relaxation property of Carboxymethylated wood (CMW) containing various metal ions is examined in water; the measurement is also made by replacing the water with acetic acid 10 minutes after the measurement in water. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Holzforschung - International Journal of the Biology, Chemistry, Physics and Technology of Wood de Gruyter

Relaxation Properties of Carboxymethylated Wood plus Metallic Salts in Aqueous Solution

Loading next page...
 
/lp/de-gruyter/relaxation-properties-of-carboxymethylated-wood-plus-metallic-salts-in-7HIj02ZkWx
Publisher
de Gruyter
Copyright
Copyright © 2009 Walter de Gruyter
ISSN
0018-3830
eISSN
1437-434X
DOI
10.1515/hfsg.1993.47.3.202
Publisher site
See Article on Publisher Site

Abstract

Introduction We reported that metal ion binds to the side-chain carboxyl group of molecular chain of half-esterified or etherified wood, and that the mobility of modified wood components, in particular, of cellulose mainchains, changes remarkably by the introduction of metal ions (Nakano 1990, 1991). Furthermore, it was clarified that divalent and trivalent metal ions form crosslinks between the main-chains, while monovalent metal ions do not. Factor related to the mobility are the charge (valency), the radius, and the amount of metal ion. The relationship among them is represented by a simple equation (Nakano 1991). If the bonding between metal ion and the side-chain carboxyl group of molecular chain of Carboxymethylated wood is ionic, crosslinking can be broken in water or acid solution because of dissociation of containing metal ions. The interaction between mainchains is then influenced by both nature of metal ion and the degree of ionization. In this work, in order to clarify the effects caused by dissociation of metal ion in water, stress relaxation property of Carboxymethylated wood (CMW) containing various metal ions is examined in water; the measurement is also made by replacing the water with acetic acid 10 minutes after the measurement in water.

Journal

Holzforschung - International Journal of the Biology, Chemistry, Physics and Technology of Woodde Gruyter

Published: Jan 1, 1993

There are no references for this article.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create folders to
organize your research

Export folders, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off