Pulsed electron beam irradiation of dilute aqueous poly(vinyl methyl ether) solutions

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• 作者：Thomas Schmidt ; Ireneusz Janik ; Sł ; awomir Kadł ; ubowski ; Piotr Ulań ; ski ; Janusz M. Rosiak ; Rudolf Reichelt and Karl-Friedrich Arndt
• 关键词：Poly(vinyl methyl ether) ; Pulsed electron beam irradiation ; Nanogels
• 刊名：Polymer
• 出版年：2005
• 出版时间：2005
• 年：2005
• 卷：46
• 期：23
• 页码：9908-9918
• 全文大小：513 K

文摘

A dilute aqueous solution of the temperature-sensitive polymer, poly(vinyl methyl ether) (PVME), was irradiated by a pulsed electron beam in a closed-loop system. At temperatures, below the lower critical solution temperature (LCST), intramolecular crosslinked macromolecules, nanogels, were formed. With increasing radiation dose D the molecular weights M_w increase, whereas the dimensions (radius of gyration R_g, hydrodynamic radius R_h) of the formed nanogels decrease. The structure of the PVME nanogels was analyzed by field emission scanning electron microscopy (FESEM) and globular structures with d