Synthesis of porous vinylnaphthalene/divinylnaphthalene copolymers and their sorptive properties towards phenol and its derivatives
Synthesis of porous vinylnaphthalene/divinylnaphthalene copolymers and their sorptive properties towards phenol and its derivatives
复制标题
多孔乙烯基萘/二乙烯基萘共聚物的合成及其对苯酚及其衍生物的吸附性能
DOI：
10.1016/s0014-3057(01)00263-4
复制
发表时间：
2002
影响因子：
6
通讯作者：
A. Jyo
中科院分区：
文献类型：
--
作者：
A. Trochimczuk;S. Aoki;K. Yamabe;A. Jyo
在甲苯和癸烷存在下，使用悬浮聚合方法合成了具有三种不同标称交联度（60、80和100重量％）的四种多孔乙烯基萘/二乙烯基萘（VN/DVN）聚合物。使用各种交联水平和惰性稀释剂的目的是改变聚合物网络-稀释剂相互作用的程度。所得聚合物的比表面积在 450–700 m2/g 范围内，具体取决于 DVN 含量。在所有树脂中均检测到两组孔：一组直径约为 2 nm，第二组直径在 30-40 nm 范围内。使用苯酚及其衍生物（邻氯苯酚、2-甲基苯酚、邻硝基苯酚、间硝基苯酚和对硝基苯酚）的稀溶液（0.5 mmol/l）研究了它们的吸附特性。已发现，在低平衡浓度下，吸附遵循以下顺序：邻硝基苯酚>邻氯苯酚>间硝基苯酚>邻甲基苯酚>对硝基苯酚>苯酚。通过 77 K 下的氮气吸附获得了所得聚合物多孔结构的完整特征，并使用反气相色谱分析了它们的表面性质。
Four porous vinylnaphthalene/divinylnaphthalene (VN/DVN) polymers having three different nominal crosslinking degrees (60, 80 and 100 wt.%) have been synthesized using the suspension polymerization method in the presence of toluene and decane. The use of various crosslinking levels and inert diluents was aimed at changing the extent of polymeric network-diluent interactions. The resultant polymers have specific surface area in the range 450–700 m2/g depending on the DVN content. Two sets of pores were detected in all resins: one with the diameter of ≈2 nm and the second one in the range of 30–40 nm. Their sorptive properties have been studied using dilute (0.5 mmol/l) solutions of phenol and its derivatives (o-chlorophenol, 2-methylphenol, o-nitrophenol, m-nitrophenol and p-nitrophenol). It has been found that sorption, at low equilibrium concentration, follows the order: o-nitrophenol > o-chlorophenol > m-nitrophenol > o-methylphenol > p-nitrophenol > phenol. Full characteristics of the porous structure of resultant polymers was obtained by nitrogen adsorption at 77 K and their surface properties analyzed using Inverse Gas Chromatography.