حركية تفاعل3,1 - ثنائي أمينو البروبان مع الحمض الديميري الدسمC36

Authors

  • احمد فلاح
  • منال الحموي

Abstract

نفذت الدراسة الحركية على التفاعل بين3,1  -  ثنائي أمينو البروبان والحمض الديميري  الدسم C36 في الحالة السائلة المنصهرة , أنجز التفاعل عند الدرجات (110,120,140,145,155, ºC) وتم تعيين قرينة الحموضة للمنتج. وقد وجد أنّ  تفاعل الأميدة كان من المرتبة الثانية مع طاقة تنشيط 35 k cal /g mol حتى نسبة تحول70% وذلك عند درجات الحرارة (110,120,155, ºC ) و 62%,86% عند درجات حرارة (ºC 140,145,) على الترتيب ثم يتحول التفاعل من المرتبة الثانية إلى المرتبة الثالثة .

قمنا بتعيين درجة البلمرة وكل من معدل الوزن الجزيئي العددي والوزني خلال أزمنة مختلفة ولوحظ أن علاقة كل مما سبق مع الزمن أقرب إلى منحنى توازني . تم قياس قرائن الانكسار لمحلول البولي أميد عند درجات حرارة مختلفة.

Kinetic  studies were carried out  on  the reaction between 1,3 -Diaminopropane  and dimeric fatty acid c36 in melt phase . The reaction  was performed at 110, 120, 140, 145, and 155 ºC and followed by determining  the acid value of the product .The polyamidation reaction was found to be of overall second order with an activation energy of 35 K cal ∕ g mol up to 70% conversion at  (110,120,155,ºC ) and 62%,86% conversion at 140,145  ºC and  overall third order  above last conversion .The Degree of Polymerization , Number Average Molecular Weight, Weight Average Molecular Weight has been calculated during different times , The relationships between Degree of Polymerization , Number Average Molecular Weight , Weight Average Molecular Weight  with the times is near to equilibrium curve ,The Refractor index  of polyamide solution  was measured at different temperatures.

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Published

2018-12-09

How to Cite

1.
فلاح ا, الحموي م. حركية تفاعل3,1 - ثنائي أمينو البروبان مع الحمض الديميري الدسمC36. TUJ-BA [Internet]. 2018Dec.9 [cited 2024Nov.24];34(3). Available from: https://journal.tishreen.edu.sy/index.php/bassnc/article/view/5264

Issue

Vol. 34 No. 3 (2012): العلوم الأساسية

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