第一届网络课程大赛 Recognition of Polymer secondary structure situation2task2-1.ppt

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2020-08-25 发布于北京
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第一届网络课程大赛 Recognition of Polymer secondary structure situation2task2-1.ppt

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If repeating units along the chain are chemically and sterically regular, then the polymer is said to possess structural regularity. 如果沿着分子链的重复单元是化学和立体规整的，那么可以说高分子具有结构规整性。 Situation 2 Task 2 Recognition of Polymer secondary structure(1)configuration To consider structural regularity, we need to define two terms: recurrence regularity and stereoregularity. Situation 2 Task 2 Recognition of Polymer secondary structure(1)configuration To consider structural regularity, we need to define two terms: recurrence regularity and stereoregularity. 为了讨论结构规整性，我们需要明确两个概念：重现规整性和立体规整性。 Situation 2 Task 2 Recognition of Polymer secondary structure(1)configuration Recurrence regularity refers to the regularity with which the repeating unit occurs along the polymer chain. Situation 2 Task 2 Recognition of Polymer secondary structure(1)configuration Recurrence regularity refers to the regularity with which the repeating unit occurs along the polymer chain. 重现规整性是指重复单元沿着高分子链出现的规律性。 Situation 2 Task 2 Recognition of Polymer secondary structure(1)configuration This may be illustrated by examining the polymers resulting from monosubstituted vinyl monomers. Here there are three possible arrangements. Situation 2 Task 2 Recognition of Polymer secondary structure(1)configuration This may be illustrated by examining the polymers resulting from monosubstituted vinyl monomers. Here there are three possible arrangements. 可以通过检验由单取代乙烯基单体生成的聚合物来证明。在这里有三种可能的排列： Situation 2 Task 2 Recognition of Polymer secondary structure(1)configuration 键接异构 1,2 addition 1,1 addition head-to-tail structure head-to-head or tail-to-tail structure The last two configurations do not appear in any measurable extent in known polymers. Situation 2 Task 2 Recognition of Polymer secondary structure(1)configuration The last two configurations do not appear in any measurable extent in known polymers. 后两种构型在已知的聚合物中没有出现可量化的程度。 Situation 2 Task 2 Recognition of Polymer secondary structure(1)configuration