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語(yǔ)無倫次銀蟲 (初入文壇)
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[求助]
氧化鋁的一段話求好人幫忙翻譯一下,謝謝
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| 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. |
木蟲之王 (文學(xué)泰斗)
| 接枝到PAA 骨架上的PEO“牙”表現(xiàn)出三個(gè)重要的優(yōu)勢(shì)。首先,在PAA 骨架上以隨機(jī)間距粘附的PEO“牙”的存在能夠防止(PAA 骨架)在溶液中或Al203表面上因響應(yīng)不同鹽離子濃度而造成的較大構(gòu)型變化。其次,PEO“牙”的存在能夠防止純PAA 骨架在溶液中、或PAA-包裹的alpha-Al203粒子在懸浮液中因?yàn)殡x子相互作用而造成的團(tuán)聚。第三,PAA-PEO在Al203表面上形成一種雙層吸附構(gòu)型。其中一層是錨固于Al203表面上的PAA片段,而另一層則是接枝于PAA 骨架上電中性的PEO“牙”。這種雙層吸附構(gòu)型增加了吸附層的厚度,同時(shí)也增加了空間位阻(排斥作用),因而PAA-PEO與純PAA相比具有更好的分散性。 |
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