JCE Online Journal of Chemical Education
 | Subscriptions  | Software Orders  | Support  | Contributors  | Advertisers  | 

JCE Print
   Current Issue
 Previous Issues
 Supplements
 Search JCE Index

JCE Digital Library
   DigiDemos
 QBank
 SymMath
 WebWare

JCE Software
   Latest Releases
 Software & Video
 Downloads
 Support

Only@JCE Online
   JCE Online Store
 JCE HS CLIC
 JCE Discussion Forums
   Biographical Snapshots
 ChemEd Resource Shelf
 Featured Molecules
 Hal's Picks
 Project Chemlab
 Reviewed WWW Sites
 "Web-Ed" Articles

About JCE
   Features
 Publications
 Operations
 Outreach
 Contact Us


  Home > JCE Print > Journal of Chemical Education > Issues > 1997  > April  >
In the Classroom
Filtrates and Residues
Rayon from Dryer Lint: A Demonstration
Michael A. Knopp
Miami University Middletown, 4200 E. University Blvd, Middletown, OH 45042
Cover
April 1997
Vol. 74 No. 4
p. 401
Abstract
In this demonstration, ordinary household dryer lint from the laundering of cotton items is stirred into the traditional Schweizer reagent mixture, a saturated solution of copper (II) carbonate in concentrated ammonium hydroxide. Any insoluble material (i.e. hair) is removed with a glass rod. The resulting deep blue viscous solution is taken up in an eye dropper and extruded into a 190 x 100 mm glass recrystallizing dish, which contains a dilute (3M) solution of sulfuric acid. Threads of rayon several cm in length can be thus formed. These threads are best viewed by the audience on an overhead projector. The sulfuric acid solution and threads are disposed of in compliance with local environmental regulations.
More Information
*  Citation
 Knopp, Michael A. J. Chem. Educ. 1997 74 401.
*  Keywords
*  History
 Created:
Last Updated:		 July 28, 1999
June 23, 2005
<< Previous Article Table of Contents Next Article >>
  Home > JCE Print > Journal of Chemical Education > Issues > 1997 > April > Page 401


Subscriptions
 Subscription Info
 Order Forms

JCE HS CLIC

Our Secondary School editors work hard to distill all the JCE materials to produce a fraction of particular interest to high school teachers. We call it CLIC.
 JCE HS CLIC

Contributions Welcome
JCE welcomes your submission
 Contributors' Corner

Advertisers
In recent years we have worked hard to better match our advertisers with our readers. When shopping for chemistry education materials, visit our advertisers' WWW sites first.
 Recent Advertisers

Be An Ambassador
Take JCE along on your outreach missions. Copies of the Journal, guest access to JCE Online, our publications catalog, and more are available for your participants.
 Outreach with JCE

Comments to
jceonline@chem.wisc.edu		 Copyright © Division of Chemical Education, Inc., American Chemical Society.
All rights reserved.