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New polyurethane-type rigid foams from liquified wood powders

New polyurethane-type rigid foams from liquified wood powders JOURNAL OF MATERIALS SCIENCE L ETTERS 22, 2003, 1225 – 1228 New polyurethane-type rigid foams from liquified wood powders M. H. ALMA , M . ALTAY BASTURK Department of Industrial Engineering of Forestry, Faculty of Forestry, University of Kahramanmaras Sutcu Imam, 46060 Kahramanmaras, Turkey E-mail: alma@ksu.edu.tr M. DIGRAK Department of Microbiology, Faculty of Art & Science, Kahramanmaras Sutcu Imam University, 46100 Kahramanmaras, Turkey Polyurethanes (PUs) are one of the most useful three- dioxane/water: 8/2) and then filtrated. And the dioxan- dimensional polymers because they can be used in insoluble part was oven dried and weighed. Finally, various forms of materials such as sheets, foams, elas- percent dioxan-insoluble part (DIP) was determined by tomers, adhesives and paints, etc. PUs are a large va- the following equation: riety of polymer with quite different compositions and w − w correspondingly different properties. They can be pro- B0 B DIP(%) = × 100 (1) duced through interaction between polyols and poly- B0 isocyanate via poly addition polymerization (Fig. 1) [1]. where w and w are the oven-dry weight of starting B0 B Since lignocellulosic materials including agricultural wood powders (g) and the oven-dry weight of unliqui- and or forestry wastes contain natural polymers http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science Letters Springer Journals

New polyurethane-type rigid foams from liquified wood powders

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References (9)

Publisher
Springer Journals
Copyright
Copyright © 2003 by Kluwer Academic Publishers
Subject
Materials Science; Characterization and Evaluation of Materials; Industrial Chemistry/Chemical Engineering; Polymer Sciences; Classical Mechanics
ISSN
0261-8028
eISSN
1573-4811
DOI
10.1023/A:1025356702660
Publisher site
See Article on Publisher Site

Abstract

JOURNAL OF MATERIALS SCIENCE L ETTERS 22, 2003, 1225 – 1228 New polyurethane-type rigid foams from liquified wood powders M. H. ALMA , M . ALTAY BASTURK Department of Industrial Engineering of Forestry, Faculty of Forestry, University of Kahramanmaras Sutcu Imam, 46060 Kahramanmaras, Turkey E-mail: alma@ksu.edu.tr M. DIGRAK Department of Microbiology, Faculty of Art & Science, Kahramanmaras Sutcu Imam University, 46100 Kahramanmaras, Turkey Polyurethanes (PUs) are one of the most useful three- dioxane/water: 8/2) and then filtrated. And the dioxan- dimensional polymers because they can be used in insoluble part was oven dried and weighed. Finally, various forms of materials such as sheets, foams, elas- percent dioxan-insoluble part (DIP) was determined by tomers, adhesives and paints, etc. PUs are a large va- the following equation: riety of polymer with quite different compositions and w − w correspondingly different properties. They can be pro- B0 B DIP(%) = × 100 (1) duced through interaction between polyols and poly- B0 isocyanate via poly addition polymerization (Fig. 1) [1]. where w and w are the oven-dry weight of starting B0 B Since lignocellulosic materials including agricultural wood powders (g) and the oven-dry weight of unliqui- and or forestry wastes contain natural polymers

Journal

Journal of Materials Science Letters – Springer Journals

Published: Oct 6, 2004

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