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العنوان
Preparation of some polymeric surfactants /
المؤلف
Badr, Samy Khodry.
هيئة الاعداد
باحث / samy khodry bader
مشرف / abdel fattah f. shaaban
مناقش / shafey g. donia
مناقش / abdel fattah f. shaaban
الموضوع
Surface active agents. Polymers.
تاريخ النشر
1995.
عدد الصفحات
169 p. :
اللغة
الإنجليزية
الدرجة
الدكتوراه
التخصص
العلوم البيئية (متفرقات)
تاريخ الإجازة
1/1/1995
مكان الإجازة
جامعة بنها - كلية العلوم - فلسفة الكمياء
الفهرس
Only 14 pages are availabe for public view

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Abstract

In the present study the following types of polymeric surfactants
have been prepared.
1- A novel two series of oligomeric self-sequestering surfactants have
been prepared by the reaction of itaconic acid, phthalic anhydride,
citric acid with oxypropylated 1,4-butane diol and oxypropylated
1,6-hexane diol, respectively. The structure features of these oligo _
meric surfactants have been confirmed by IR and IH NMR spectra.
These oligomeric surfactants exhibit excellent properties of selfsequestering.
Besides good surface-active properties including
surface tension, interfacial tension, low-foaming, good wetting:~j
properties, good stability towards acidic and basic. media l~
emulsifying power and dispersant properties, ’solubilization ...•.••
properties and good biodegradability they possess autonomous
sequestering ability without any help of additon8J sequestering
agent.
JI- Two series of water-soluble polyester surfactants have been
prepared by the polymerization of bis 1,4-<dicarboxymethoxy)
benzene, maleic anhydride and oxypropylated 1,4-butane diol and’
oxypropylated 1,6-hexane diol respectively. The physical properties
of these polyester surfactants such as acid value, hydroxyl. value,
molecular weight, number of repeating units, were studied. They were;confinned by IR andlH NMR spectra. These water-soluble
polyester surfactants have been found to exhibit excellent surface
tension, interfacial tension, low foaming, good emulsifying wetting
properties, good biodegradability in river water, solubilization and
dispersant properties for the applied dyes. The antimicrobial and
antifungal properties of the prepared polyester surfactants were
measured and were found to be highly active.
111-Four series of nonionic copolymer surfactants have been prepared
by the free radical polymerization of dioctyl itaconate with dipoly
propylene glycol itaconate. The structural features of these nonionic
copolymer surfactants have been confirmed by IR and IHNMR
spectra. The surface active properties of these polymers were
compared and evaluated, including solubility, cloud point, surface
and interfacial tension, foaming emulsification and biodegradability.
Most of the products are good biodegradable surfactants, which
manifested the importance of their application in pollution problems.