Abstract
A dielectric relaxation of oxidised polyethylene originally observed by Carson was reproduced both by synthetically introducing hydroxyl groups into the polymer molecules, and by adding long-chain secondary alcohols. By comparing the 4.2 K relaxation strengths and rates of polyethylenes containing these and other additives the crystal structure is shown to be of primary importance only in the case of long-chain secondary alcohols. These also produced weak relaxations when introduced into crystals of odd alkanes, but in even alkanes relaxed strongly, and at a different frequency. 8-aminopentadecane only relaxed strongly in odd alkanes. An attempt is made to correlate these findings with the intermolecular steric hindrances in the respective crystals.
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