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arXiv 0807.4997cond-mat.softq-bio.BM
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耗尽理论与polymer沉淀蛋白质

Depletion theory and the precipitation of protein by polymer

Theo Odijk

摘要:

用聚合物链段的耗尽理论重新解释了半稀释聚合物溶液中纳米粒子的耗尽理论。讨论了平均场论的局限性和扩展.推导出两个小球之间相互作用的显式表达式。一般形状的粒子的耗尽自由能以电容或有效斯托克斯半径的形式给出。这为聚合物对蛋白质沉淀的影响提供了接近定量的解释。

英文摘要:

The depletion theory of nanoparticles immersed in a semidilute polymer solution is reinterpreted in terms of depleted chains of polymer segments. Limitations and extensions of mean-field theory are discussed. An explicit expression for the interaction between two small spheres is derived. The depletion free energy for a particle of general shape is given in terms of the capacitance or effective Stokes radius. This affords a close to quantitative explanation for the effect of polymer on protein precipitation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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