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Date: 29-9-2017
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Date: 2-10-2017
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Date: 22-6-2017
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Nylon 4 (Polybutyramide)
Nylon 4 is produced by ring opening 2-pyrrolidone. Anionic polymerization is used to polymerize the lactam. Cocatalysts are used to increase the yield of the polymer. Carbon dioxide is reported to be an excellent polymerization activator. Nylon 4 has a higher water absorption capacity than other nylons due to its lower hydrophobic property.
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علامات بسيطة في جسدك قد تنذر بمرض "قاتل"
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أول صور ثلاثية الأبعاد للغدة الزعترية البشرية
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مدرسة دار العلم.. صرح علميّ متميز في كربلاء لنشر علوم أهل البيت (عليهم السلام)
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