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Synthesis of new polyester (Dimer acid / Triethanolamine) Study of Some Physical and Chemical properties

تحضير بولي إستر (الحمض الديمري / تري إيتانول أمين) و دراسة بعض خواصه الفيزيائية و الكيميائية

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 Publication date 2003
and research's language is العربية
 Created by Shamra Editor




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The recent synthesis of the new polymers has been profoundly affected by the unique characteristics of Dimer Acid. These polymers were made up following the condensation with triethanolamine when was treated in melted phase. We performed identification of the physical characteristics of the polymers such as the molecular weight, in addition to the acid value and hydroxyl value. Infrared spectroscopy have been used in identification of this polymer. Also, the rheological behavior has been assessed thermally and shearing stress by using capillary viscometer. Our results revealed a reduction in the viscosity with increase of the shearing stress as will as with rise in the temperature.


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Research summary
تناولت هذه الدراسة تحضير بوليستر جديد باستخدام حمض الديمر وثلاثي إيثانول أمين عن طريق تفاعل التكثيف في الحالة المنصهرة. تم تحديد الخصائص الفيزيائية والكيميائية للبوليمرات المحضرة، بما في ذلك الوزن الجزيئي، قيمة الحمض، وقيمة الهيدروكسيل. كما تم استخدام التحليل الطيفي بالأشعة تحت الحمراء لتحديد هوية البوليمر. تم تقييم السلوك الريولوجي للبوليمرات من خلال قياس اللزوجة باستخدام مقياس اللزوجة الشعري. أظهرت النتائج انخفاضًا في اللزوجة مع زيادة الإجهاد القصي وارتفاع درجة الحرارة.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة في مجال الكيمياء البوليمرية حيث تقدم معلومات قيمة حول تحضير بوليستر جديد وتحديد خصائصه الفيزيائية والكيميائية. ومع ذلك، كان من الممكن تحسين الدراسة من خلال تقديم تفاصيل أكثر حول التطبيقات المحتملة لهذا البوليمر الجديد في الصناعات المختلفة. كما أن الدراسة لم تتناول بشكل كافٍ تأثير المتغيرات البيئية على استقرار البوليمر، وهو جانب مهم يجب مراعاته في الأبحاث المستقبلية.
Questions related to the research
  1. ما هو الهدف الرئيسي من هذه الدراسة؟

    الهدف الرئيسي هو تحضير بوليستر جديد باستخدام حمض الديمر وثلاثي إيثانول أمين وتحديد خصائصه الفيزيائية والكيميائية.

  2. ما هي الطرق المستخدمة لتحديد خصائص البوليمر في هذه الدراسة؟

    تم استخدام التحليل الطيفي بالأشعة تحت الحمراء ومقياس اللزوجة الشعري لتحديد الخصائص الفيزيائية والكيميائية للبوليمر.

  3. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    أظهرت النتائج انخفاضًا في اللزوجة مع زيادة الإجهاد القصي وارتفاع درجة الحرارة.

  4. ما هي الاقتراحات لتحسين هذه الدراسة في المستقبل؟

    يمكن تحسين الدراسة من خلال تقديم تفاصيل أكثر حول التطبيقات المحتملة للبوليمر الجديد ودراسة تأثير المتغيرات البيئية على استقراره.


References used
(Harrison S. A., Peterson L. E., and Wheelo D. H. J. Am. Oil Chemi. Soc. 42, 2 (1965
(N.C. Billingham, Molar Mass Measurements in Polymer Science Kogan (1977
(F. G. MANN and B. C. SAUNDERS, Practical Organic Chemistry longman Fourth Edition (1975
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