Nova Publishers
My Account Nova Publishers Shopping Cart
HomeBooksSeriesJournalsReference CollectionseBooksInformationSalesImprintsFor Authors
            
  Top » Catalog » Books » Biology » Cell Biology » Cellulose: Structure and Properties, Derivatives and Industrial Uses Chapters » My Account  |  Cart Contents  |  Checkout   
Quick Find
  
Use keywords to find the product you are looking for.
Advanced Search
What's New? more
Central Asia: Perspectives and Present Challenges
$160.00
Shopping Cart more
0 items
Information
Shipping & Returns
Privacy Notice
Conditions of Use
Contact Us
Notifications more
NotificationsNotify me of updates to CELLULOSE ALLOMORPHS OVERVIEW AND PERSPECTIVES
Tell A Friend
 
Tell someone you know about this product.
CELLULOSE ALLOMORPHS OVERVIEW AND PERSPECTIVES $100.00
Authors:  Diana Ciolacu and Valentin I. Popa
Abstract:
Cellulose is the most widely spread organic polymer found in nature, since it
constitutes the main component of the membrane of plant cell. The degree of knowledge
on the structure of cellulose has evolved along with the progress made in the field of
polymers, cellulose being the first macromolecular compound that was extensively
studied during implementation and development of the concept of a macromolecule.
Even though cellulose was isolated over 180 years ago, the study of this natural polymer
has also remained at present of interest to scientists. The use of the X-rays diffraction
method of investigation led to the observation that all native celluloses, no matter where
they come from, display identical roentgenograms. These have been conventionally
named by the term cellulose I. At the same time, based on X-ray diffraction studies, three
other allomorphic forms have also been later identified: cellulose II the mercerized
cellulose or regenerated; cellulose III the ammonia treated cellulose, and cellulose IV
the modified cellulose by thermal treatment. In all of these allomorphic states the
molecular structure remains the same; what is modified is the network of hydrogen bonds
developed at the neighboring and association limits of macromolecular chains, along with
unit cell dimensions. The interconversions between the allomorphic structures of
cellulose can be performed by the action of chemical reagents or thermal treatments. The
polymorphism of cellulose always intrigued us through the non-elucidated aspects
regarding both the obtaining and the structural organization of allomorphic forms. 


Available Options:
Version:
This Item Is Currently Unavailable.
Special Focus Titles
01.Violent Communication and Bullying in Early Childhood Education
02.Cultural Considerations in Intervention with Women and Children Exposed to Intimate Partner Violence
03.Chronic Disease and Disability: The Pediatric Lung
04.Fruit and Vegetable Consumption and Health: New Research
05.Fire and the Sword: Understanding the Impact and Challenge of Organized Islamism. Volume 2

Nova Science Publishers
© Copyright 2004 - 2020

CELLULOSE ALLOMORPHS OVERVIEW AND PERSPECTIVES