The effect of hot DMSO treatment on the γ-ray-induced grafting of acrylamide onto PET films
The effect of hot DMSO treatment on the γ-ray-induced grafting of acrylamide onto PET films
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热DMSO处理对PET薄膜γ射线诱导丙烯酰胺接枝的影响
DOI：
10.1038/pj.2014.12
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发表时间：
2014
期刊：
影响因子：
2.8
通讯作者：
Kazuhiro Hara
中科院分区：
文献类型：
--
作者：
Nazia Rahman;Nobuhiro Sato;Masaaki Sugiyama;Yoshiki Hidaka;Hirotaka Okabe;Kazuhiro Hara
在本研究中，丙烯酰胺（AAm）到聚（对苯二甲酸乙二醇酯）（PET）膜的γ-射线诱导接枝和由此产生的性能的变化，包括汞（II）捕获功能，进行了研究。在原始PET膜上没有观察到接枝。因此，在γ-射线接枝之前用二甲基亚砜（DMSO）处理膜以促进接枝;一些样品在高温（100-160 C）下预处理，并且显示出从溶液中吸附AAm的显著增加。在本研究中获得的最高接枝率为15.5%的DMSO样品在140 ℃预处理和γ射线照射的总剂量为100 kGy（1 kGy h-1剂量率）在50重量%的AAm-单体溶液中，在1重量%的FeCl 3（阻聚剂）的存在下。除了促进接枝率，形成微孔的DMSO预处理的标本中被发现在光学显微镜调查。假设这种结构变化有助于AAm吸附和γ-射线接枝到PET上。使用DMSO预处理制备的AAm接枝的PET膜显示出高的Hg（II）离子的去除效率，而原始的PET膜显示没有吸收，反映了这些变化。
In the present study, the γ-ray induced grafting of acrylamide (AAm) onto poly (ethylene terephthalate)(PET) films and the resulting changes in properties, including the Hg (II)-capturing functionality, were investigated. No grafting was observed on pristine PET films. Therefore, the films were treated with dimethyl sulfoxide (DMSO) before the γ-ray grafting with the goal of facilitating grafting; some of the samples were pretreated at high temperature (100–160 C) and showed a considerable increase in the adsorption of AAm from solution. The highest graft yield obtained in the present study was 15.5% for the DMSO specimens pretreated at 140 C and γ-ray irradiated with a 100-kGy total dose (1-kGy h− 1 dose rate) in 50 wt% AAm-monomer solutions in the presence of 1 wt% FeCl 3 (polymerization inhibitor). In addition to the promotion of the graft yield, the formation of micropores in the DMSO-pretreated specimens was found during the optical microscopy investigations. This structural change is hypothesized to assist the adsorption and γ-ray grafting of AAm to PET. The AAm-grafted PET films prepared using DMSO pretreatment showed high removal efficiency for Hg (II) ions, whereas the pristine PET film showed no uptake, reflecting these changes.