翻訳と辞書 Words near each other ・ Polymer Char ・ Polymer characterization ・ Polymer chemistry ・ Polymer Chemistry (journal) ・ Polymer City Chronicles ・ Polymer classes ・ Polymer clay ・ Polymer concrete ・ Polymer Corporation ・ Polymer degradation ・ Polymer Developments Group Ltd v Tilialo ・ Polymer electrolyte membrane electrolysis ・ Polymer engineering ・ Polymer Factory Sweden AB ・ Polymer field theory ・ Polymer fractionation ・ Polymer fume fever ・ Polymer Interdisciplinary Research Centre ・ Polymer Journal ・ Polymer Library ・ Polymer nanocomposite ・ Polymer physics ・ Polymer ratio ・ Polymer science ・ Polymer solar cell ・ Polymer solution casting ・ Polymer substrate ・ Polymer turbulence drag reduction ・ Polymer-based battery ・ Polymer-bonded explosive Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Polymer fractionation ： ウィキペディア英語版 Polymer fractionation Polymers are chainlike molecules that are made of the same repetition unit. With a few exceptions such as proteins, a polymer consists of a mix of molecules with different chain lengths. Therefore average values are given for the molecular weight like the number average, the weight average or the viscosity average molar mass. A measure for the width of the molecular weight distribution is the polydispersity index. The targeted manipulation of the molecular weight distribution of a polymer by removing short and/or long chain material is called polymer fractionation. == Reasons for polymer fractionation == The molecular weight of polymers has a large influence on their properties and therefore determines the applications. Among others the flow behavior, the solubility, the mechanical properties but also the lifetime are influenced by the molecular weight. For high duty polymers – polymers that have to fulfill elevated demands – not only the molecular weight but also the molecular weight distribution is important. This especially holds true if low and/or high molecular material disturbs a given task. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Polymer fractionation」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.