Effect of Dose on Mole Percentages of Polymer Brush and Root Grafted onto Porous Polyethylene Sheet by Radiation-Induced Graft Polymerization

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• 作者：Ryo Ishihara ; Shoichiro Uchiyama ; Hidekazu Ikezawa ; Shinsuke Yamada ; Hideyuki Hirota ; Daisuke Umeno ; Kyoichi Saito
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：September 4, 2013
• 年：2013
• 卷：52
• 期：35
• 页码：12582-12586
• 全文大小：291K
• 年卷期：v.52,no.35(September 4, 2013)
• ISSN：1520-5045

文摘

Glycidyl methacrylate (GMA) was graft-polymerized onto a porous sheet ( 75% porosity and 1.6-渭m average pore size) previously irradiated with an electron beam. The resultant grafted poly-GMA chain can be classified as a polymer brush extending from the pore surface toward the pore interior and a polymer root invading the polymer matrix. The boundary crossing the pore/matrix interface can be detected in two independent ways: molar conversion of the epoxy group into a sulfonic group providing a plateau in the molar conversion versus reaction time curve and molar conversion exhibiting a breakthrough point in the swelling ratio versus molar conversion curve. A higher irradiation dose was found to lead to a higher mole percentage of polymer brush in the graft chain. The dose range from 20 to 200 kGy corresponded to the mole percentage range of polymer brush from 6% to 15%.