Characterization and some properties of cellulose acetate-co-polyethylene oxide blends prepared by the use of gamma irradiation
Characterization and some properties of cellulose acetate-co-polyethylene oxide blends prepared by the use of gamma irradiation
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DOI：
10.1016/j.jrras.2014.01.003
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发表时间：
2014-04-01
影响因子：
1.7
通讯作者：
Lotfy, S.
中科院分区：
文献类型：
--
作者：
Kamal, H.;Abd-Elrahim, F. M.;Lotfy, S.
以γ射线为引发剂制备了醋酸纤维素（CA）、聚环氧乙烷（PEO）共混共聚物。以基于乙酸纤维素的不同浓度（0 - 5%）添加作为添加剂的PEO。由于PEO是水溶性的，因此将它们的一部分萃取到水溶液中。为了克服这一点，PEO添加剂与N，N '亚甲基双丙烯酰胺（MBAAm）交联以稳定地包埋在CA基质中。效率计算为100%。使用扫描电子显微镜（SEM）的形态变化和体积性质，如吸水性，导电性，和化学稳定性进行了研究。开发的共聚物共混物的热稳定性也进行了研究，使用热重分析（TGA），和差示扫描量热仪（DSC）。研究了不同的共聚反应，如交联剂浓度和PEO与醋酸纤维素的比例。据观察，添加少量的PEO 3重量%作为添加剂导致的热特性的相当大的变化。Copyright（C）2014，The Egyptian Society of Radiation Sciences and Applications. Elsevier B. V.制作和主持。保留所有权利。
Cellulose acetate (CA), polyethylene oxide (PEO) copolymer blend was prepared using gamma-rays as initiator. PEO as an additive was added with different concentrations (0 - 5%) based on cellulose acetate. As the PEO is water soluble, some portions of them were extracted into aqueous solution. To overcome this, the PEO additives were crosslinked with N,N'Methylene bis-acrylamide (MBAAm) to be stably entrapped in the CA matrix. The efficiency was calculated to be 100%. Morphological changes using scanning electron microscope (SEM) and the bulk properties such as water sorption, electrical conductivity, and chemical stability were investigated. The thermal stability of the developed copolymer blend has also been studied using thermogravimetric analysis (TGA), and differential scanning calorimeter (DSC). Different variations of the copolymerization were studied such as crosslinker concentration and ratio of PEO to cellulose acetate. It was observed that the addition of small amounts of PEO 3 weight % as an additive resulted in a considerable change of the thermal characteristics. Copyright (C) 2014, The Egyptian Society of Radiation Sciences and Applications. Production and hosting by Elsevier B.V. All rights reserved.