科研人员发明一种全新的聚合物材料-凯发k8官网

科研人员发明一种全新的聚合物材料
文章来源:未知 文章作者:enread 发布时间:2016-01-31 05:47 字体: [ ] 
(单词翻译:双击或拖选)
imagine a polymer with removable parts that can deliver something to the environment and then be chemically 1 to function again. or a polymer that can lift weights, contracting and expanding the way muscles do. these functions require polymers with both 2 and soft nano-sized 3 with extremely different properties that are organized in specific ways. a completely new 4 polymer of this type has been developed by northwestern university researchers that might one day be used in artificial muscles or other life-like materials; for delivery of drugs, biomolecules or other chemicals; in materials with self-repair 5; and for replaceable energy sources. 
 
"we have created a surprising new polymer with nano-sized compartments that can be removed and chemically regenerated multiple times," said materials scientist samuel i. stupp, the senior author of the study. 
 
"some of the nanoscale compartments contain rigid conventional polymers, but others contain the so-called supramolecular polymers, which can respond rapidly to 6, be delivered to the environment and then be easily regenerated again in the same locations. the supramolecular soft compartments could be 7 to generate polymers with the functions we see in living things," he said. 
 
stupp is director of northwestern's simpson querrey institute for bionanotechnology. he is a leader in the fields of nanoscience and supramolecular self-assembly, the strategy used by biology to create highly 8 ordered structures. 
 
the hybrid polymer cleverly combines the two types of known polymers: those formed with strong covalent bonds and those formed with weak non-covalent bonds, well known as "supramolecular polymers." the integrated polymer offers two distinct "compartments" with which chemists and materials scientists can work to provide useful features.
 
the study will be published in the jan. 29 issue of science.


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1 67df9da7e5af2af5acd8771deef0296f     
v.新生,再生( regenerate的过去式和过去分词 )
参考例句:
  • they are regarded as being enveloped in regenerated gneisses. 它们被认为包围在再生的片麻岩之中。 来自辞典例句
  • the party soon regenerated under her leadership. 该党在她的领导下很快焕然一新。 来自辞典例句
2 jdpyf     
adj.严格的,死板的;刚硬的,僵硬的
参考例句:
  • she became as rigid as adamant.她变得如顽石般的固执。
  • the examination was so rigid that nearly all aspirants were ruled out.考试很严,几乎所有的考生都被淘汰了。
3 4e9d78104c402c263f5154f3360372c7     
n.间隔( compartment的名词复数 );(列车车厢的)隔间;(家具或设备等的)分隔间;隔层
参考例句:
  • your pencil box has several compartments. 你的铅笔盒有好几个格。 来自《简明英汉词典》
  • the first-class compartments are in front. 头等车室在前头。 来自《简明英汉词典》
4 pcbzu     
n.(动,植)杂种,混合物
参考例句:
  • that is a hybrid perpetual rose.那是一株杂交的四季开花的蔷薇。
  • the hybrid was tall,handsome,and intelligent.那混血儿高大、英俊、又聪明。
5 jsgzz     
n.能力;才能;(pl)可发展的能力或特性等
参考例句:
  • she has the capability to become a very fine actress.她有潜力成为杰出演员。
  • organizing a whole department is beyond his capability.组织整个部门是他能力以外的事。
6 lubwm     
n.刺激(物)
参考例句:
  • it is necessary to curtail or alter normally coexisting stimuli.必需消除或改变正常时并存的刺激。
  • my sweat glands also respond to emotional stimuli.我的汗腺对情绪刺激也能产生反应。
7 cz7zma     
adj.生气勃勃的,活跃的,愉快的
参考例句:
  • his observations gave rise to an animated and lively discussion.他的言论引起了一场气氛热烈而活跃的讨论。
  • we had an animated discussion over current events last evening.昨天晚上我们热烈地讨论时事。
8 5hmxa     
adj.为实用而设计的,具备功能的,起作用的
参考例句:
  • the telephone was out of order,but is functional now.电话刚才坏了,但现在可以用了。
  • the furniture is not fancy,just functional.这些家具不是摆着好看的,只是为了实用。
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