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العنوان
RADIATION MODIFICATION OF BIODEGRADABLE POLYMER COMPOSITES FOR PLANT FERTILIZING /
المؤلف
Mohammed, Afaf Afify Abd El-Hakiem
هيئة الاعداد
باحث / عفاف عفيفى عبد الحكيم محمد
مشرف / ياسر كمال عبد المنعم
مشرف / مجدى حسن سنه
مشرف / حسام محمد سيد
الموضوع
.Gel Fraction .Alginic Acid .Chitosan
تاريخ النشر
2022
عدد الصفحات
111 P.:
اللغة
الإنجليزية
الدرجة
الدكتوراه
التخصص
Organic Chemistry
تاريخ الإجازة
20/8/2022
مكان الإجازة
جامعة المنوفية - كلية العلوم - قسم الكيمياء
الفهرس
Only 14 pages are availabe for public view

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Abstract

A series of polymer blends based on plasticized starch (PLST),
poly(vinyl alcohol), alginic acid (AG), and chitosan (CS) were prepared by
solution casting. The different blends were exposed to electron beam
irradiation to different doses to form hydrogels. The blends before and after
electron beam irradiation were characterized in terms of gel fraction (%),
swelling in water (%), FTIR spectroscopic analysis, thermogravimetric
analysis (TGA), differential scanning calorimetry (DSC), and rheological
measurements. As a practical application in the field agriculture, the
hydrogels were used as growth promotion of corn plants. The results showed
that electron beam irradiation improved all the physical properties, which
provides suitable materials based on natural and synthetic biodegradable
polymers. The corn plant growth indicated an improvement in corn plant
height in presence of CS or AG polymers in starch (PLST), poly (vinyl
alcohol) blends also, more improvement in corn plant heights in case of
blends modified with MgSO4.