A polymeric molecule is not rigid like a straight rod , but it is a very long and flexible chain , it can change form easily because many in dependent vibrations and rotations of the individual atoms that compose the molecular chain .
Long , flexible polymeric chain can change their configuration and lengths easily when a stress is applied .
( There are special cases such as special liquid crystalline polymers that have a rigid rod like molecule ( the aramid fibers ) .
Elastomer is a special polymer which have cross – linked chains and the number of configurations available is very large . Elastomers show very high reversible non – linear extensions ( 5 – 700 ) % in response applied stress .
Vulcanization sulfur to form cross – linking ( the existence of a network ) to avoid chains
A polymeric molecule is not rigid like a straight rod , but it is a very long and flexible chain , it can change form easily because many in dependent vibrations and rotations of the individual atoms that compose the molecular chain .
Long , flexible polymeric chain can change their configuration and lengths easily when a stress is applied .
( There are special cases such as special liquid crystalline polymers that have a rigid rod like molecule ( the aramid fibers ) .
Elastomer is a special polymer which have cross – linked chains and the number of configurations available is very large . Elastomers show very high reversible non – linear extensions ( 5 – 700 ) % in response applied stress .
Vulcanization sulfur to form cross – linking ( the existence of a network ) to avoid chains
المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
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