alexa Abstract | Characterization of the glass transition temperature of chitosan and its oligomers by temperature modulated differential scanning calorimetry

Advances in Applied Science Research
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Research Article Open Access

Abstract

In differential scanning calorimetry (DSC), remnant moisture loss in samples often overlaps and distorts thermal events such as glass transitions. Temperature modulated DSC (TMDSC) is known for separating such overlapping processes. In this study, chitosan was depolymerized by oxidative degradation method. By this method, chitooligomers of different molecular weights were produced. The glass transition temperature (Tg) of chitosan and its oligomers was analyzed by temperature modulated DSC. While performing this event hermetically sealed pans were used. Tg of chitosan and its oligomers was resolved by TMDSC-exhibiting glass transition temperature in the first heating curve. The structural formation of chito-oligomers was evaluated by FTIR and 1H NMR. The water plasticizing effect on Tg of chitosan and its oligomers was discussed with the help of TMDSC measurements and the presence of water in them have been evaluated by FTIR and 1H NMR. XRD had explained the crystallinity of chitosan and its oligomers and even the effect of water on crystallinity.

To read the full article Peer-reviewed Article PDF image

Author(s): Prerna P Dhawade and Ramanand N Jagtap

Keywords

Temperature modulated DSC, Chitosan depolymerisation, Oxidative degradation, Moisture, Plasticizing effect., Chitosan depolymerisation

 
Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords