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语无伦次

银虫 (初入文坛)

[求助] 氧化铝的一段话求好人帮忙翻译一下,谢谢

The PEO teeth, grafted to the PAA backbone, exhibit three important merits. First, the presence of the PEO teeth, attached at random intervals along the PAA backbone, prevents large configuration changes in the solution or on the alumina surfaces in response to varying salt ionic concentrations. Second, the PEO teeth protect the underlying PAA backbone from ionic interactions that promote an aggregation of pure PAA species in solution or PAA-coated a-Al203 particles in suspension. Third, the PAA-PEO forms a double-decked adsorption configuration on the alumina surface. One is a PAA segment anchored in the alumina surface, and another is a charge-neutral PEO teeth grafted on the PAA backbone. This kind of double-decked adsorption configuration increases the adsorbed layer thickness, and it also increases the steric hindrance repulsion, therefore PAA- PEO has better dis-persion compared to PAA.
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LifePursuit

木虫之王 (文学泰斗)

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真强必胜: 金币+2, 谢谢 2014-12-31 08:38:07
语无伦次(RXMCDM代发): 金币+5 2015-01-31 16:48:01
接枝到PAA 骨架上的PEO“牙”表现出三个重要的优势。首先,在PAA 骨架上以随机间距粘附的PEO“牙”的存在能够防止(PAA 骨架)在溶液中或Al203表面上因响应不同盐离子浓度而造成的较大构型变化。其次,PEO“牙”的存在能够防止纯PAA 骨架在溶液中、或PAA-包裹的alpha-Al203粒子在悬浮液中因为离子相互作用而造成的团聚。第三,PAA-PEO在Al203表面上形成一种双层吸附构型。其中一层是锚固于Al203表面上的PAA片段,而另一层则是接枝于PAA 骨架上电中性的PEO“牙”。这种双层吸附构型增加了吸附层的厚度,同时也增加了空间位阻(排斥作用),因而PAA-PEO与纯PAA相比具有更好的分散性。
2楼2014-12-14 20:07:49
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