Adsorption of polymers at the solution-solid interface. II. Polyethers on carbon
Adsorption of polymers at the solution-solid interface. II. Polyethers on carbon
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DOI：
10.1021/j100868a032
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发表时间：
1967-08
期刊：
影响因子：
--
通讯作者：
G. J. Howard;P. Mcconnell
中科院分区：
文献类型：
--
作者：
G. J. Howard;P. Mcconnell
测定了聚环氧乙烷在六种溶剂中的吸附量。的吸附强烈依赖于溶剂的竞争水平的表面上的蒸汽吸附研究判断。由于木炭的多孔性，在整个分子量范围内，聚合物吸附的变化很小。然而，在无孔碳上的吸附随着分子量的增加而增加。环氧乙烷和环氧丙烷的嵌段共聚物已被用于研究聚合物结构变化的影响;无规共聚物的吸附程度与总组成相同的嵌段共聚物相似。聚醚不与碳紧密结合，并且可以从木炭中解吸而没有过度困难。
The adsorption of poly (ethylene oxide) onto charcoal has been measured from six solvents. The adsorption depends strongly on the level of solvent competition for the surface as judged by vapor sorption studies. As a consequence of the porosity of charcoal, little variation in polymer adsorption is shown over the whole molecular weight range. How-ever, adsorption onto nonporous carbon increases with molecular weight. Block copoly-mers of ethylene oxide and propylene oxide have been used to study the effect of variation in polymer structure; a random copolymer is adsorbed to a similar extent as a block co-polymer of the same over-all composition. Polyethers are not tightly bound to carbon and may be desorbed from charcoal without undue difficulty.