Ahmed Saad Ali Montasir <br/><br/>
Studies on the preparation of hydrogel based on chitosan and its applications in drug delivery system /  
 دراسات على تحضير الهيدروجيل على الكيتوزان وتطبيقاتها فى انظمة التحلل الدوائى 
Ahmed Saad Ali Montasir ; Supervised Ahmed M.Farag , Ali A.Hebeish 
 - Cairo :   Ahmed Saad Ali Montasir ,   2007 
 - 132Leaves :   charts ;   30cm 
<br/><br/>Thesis (M.Sc.) - Cairo University - Faculty Of Science - Department Of Organic Chemistry 
<br/><br/> Chitosan / PVA , as well as , chitosan citrate / PVA blends were used to form a semi interpenetrating polymeric network (IPN) hydrogel for medical application.The crosslinking agent free preparation method was developed using freezing - thaw process.The swelling behavior was observed to be dependent on pH , temperature and on the time and number of freezing thawing cycles 
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<br/><br/><label>Subjects--Index Terms: </label>Drug delivery Freezing - thaw Hydrogel