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العنوان
expoxidation of fatty acids used as plasticizers /
المؤلف
al dogdog,wagdy ebrahim ahmed ali
هيئة الاعداد
باحث / Wagdy Ibrahim Ahmed Ali Al-dogdog
مشرف / alla abdel moniem El-Sawy
مشرف / Abd El-fattah Fadel Shaaban
مشرف / Samy Abdel Ghany Essawy
مشرف / Kaousar Abdel-Hlim Hebash
مناقش / alla abdel moniem El-Sawy
مناقش / Abd El-fattah Fadel Shaaban
الموضوع
analytical chemistry
تاريخ النشر
1991 .
عدد الصفحات
93p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
Organic Chemistry
تاريخ الإجازة
1/1/1991
مكان الإجازة
جامعة بنها - كلية العلوم - كيمياء
الفهرس
Only 14 pages are availabe for public view

from 124

from 124

Abstract

This thesis comprises a general introduction which gives a short account on the epoxidation of mangifera oil, which are used 1 n many purposes such as plasticizers and stabilizers. -he
In sitg reagents are preferable for the epoxidation of isolated double bonds and thus achieved commercial importance.(138) The review of literature is a bibliographic survey of
mangifera fatty acids composition, separation of saturated fatty
acid/unsaturated fatty acids , preparation of 2- alkenolc. aCl.ds,
fatty alcohols and hydrocarbons. And also, naturally occurring
epoxy fatty acids and their epoxy glycerides, epoxidation of
vegetable oils and fatty acid derivatives by in situ techni que
using sulphuric acid and cation exchange resins as catalyst.
The experimental part includes, oil extraction, chemical
characteristics (Acid value, iodine value, saponification value
and unsaponiable matter), separation of fatty acids, preparation
of trans 2 - octa decenOlC. aCl.d , preparatlo.n 0f esters for cis
g-octadecenoic and trans 2-octadecenoic acids. Reduction of fatty methyl esters to the corresponding fatty
alcohols then to the hydrocarbons was undertaken.
- Epoxidation of crude Mangifera oil and free fatty acids.
- Epoxidation of fatty esters for cis 9-octadecenoate and trans
2-octadecenoate.
- Epoxidation of fatty alcohol and acetylated derivatives.
- Epoxidation of hydrocarbons.
- preparation of fatty 2-morpholinones and 2-oxazolidones.
The results of all above studies are illustrated by 13
tables and 13 figure which revieled the following.
cis 9-octadecenol and trans 2-octadecenol were prepared in
about 75-79%.
cis 9-octadecene and trans 2-octadecene were prepared in about
77-78%.
- The yield of epoxidized crude mangifera oil was 20.4%, (using
2% conc H2S0
4 as catalyst) and free cis 9-octadecenoic, trans-
2-octadecenoic were 8.65 and 8.35 respectively.
- Epoxidation of fatty esters (methyl, butyl, n-hexyl and
cyclohexyl) at the same conditions gave 78.439% for n-hexyl
ester of cis 9-octadecenoate decrease in case of trans-
2-octadecenoate to about 65.71% yield.
- The yields of epoxidized fatty alcohols at the same conditions
were 16.34%, 11.80 for cis 9-octadecenol and trans-
2-octadecenol respectively, which raised to 44.34% by acetylation.
Epoxidation of hydrocarbons yielded 39.4%, 58.58% for cis-
9-octadecene and trans 2-octadecene respectively.
- Elemental analysis of fatty 2-morpholinones and 2-oxazolidones
was found to be in agreement with the expected structure
formula.
The results of biological activity show 95% inhibition for the
used bacteria (Escherichia coli. Pseudomonas flourescence.
Bacillus subtilus and cerieus). and against fungi, {Aspergillus
flavus. Aspergillus clavatus and Penicillium notatum).
- The results of the present studies lead to the conclusion that,
the industrial wastes were successfully epoxidized in the form
of (esters, alcohols and hydrocarbons) using commercial
epoxidizing agent to give relatively high yield of epoxy
compounds. These compounds further utilized in the synthesis
of fatty 2-morpholinones and fatty 2-oxazolidones which are
known to possess not only biological activities but also useful
j ndustrial propertie.