Rania Elsayed Ali Morsi <br/><br/>
Preparation of surfactants based on chitin and chitosan and their applications in petroleum industry /  
 تحضير مواد ذات نشاط سطحى مشتقة من الكيتين والكيتوزان وتطبيقاتها فى صناعة البترول 
Rania Elsayed Ali Morsi ; Supervised Maher Zaki Elsabee , Ahmed Mohamed Ahmed Alsabagh , Yasser Mohamed Moustafa 
 - Cairo :   Rania Elsayed Ali Morsi ,   2011 
 - 142 P. :   charts , facsimiles ;   25cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physical Chemistry 
<br/><br/> This work deals with the extraction of the natural polymer chitin from local sources and its deacetylation into chitosan , a more useful soluble polymer . Chitosan was found to be inactive at interfaces but hydrophobic modification using different aliphatic and aromatic substituents rendered the various products into surface active polymers 
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<br/><br/><label>Subjects--Index Terms: </label>Chitosan  Hydrophobic modifications  Surfactant