吸油树脂的结构及性能

Structure and properties of the oil-absorbing resin

以甲基丙烯酸丁酯和丙烯酸丁酯为单体,采用悬浮聚合法制备了吸油树脂。通过傅里叶变换红外光谱和热重分析表征了其结构和组成。研究了吸油树脂对不同油品的吸油率、吸油速率和缓释性能以及吸油树脂的吸油动力学。结果表明:吸油树脂热分解温度为366.68℃,其吸油性能符合一级动力学,对不同油品的吸油速率与油品的极性有关,对CCl_4的吸油速率最快,柴油的吸油速率最慢。缓释性能与油品的种类关系较大,柴油和汽油的缓释保油率较慢,基本为0,甲苯和CCl_4的缓释保油率较快。

The oil-absorbing resin polyacrylate was synthesized from butyl methacrylate （BMA） and butyl acrylate（BA） monomers with suspension polymerization process. The composition and structure of the resin were analyzed by means of Fourier transform infrared speetroscopy（FTIR） and thermogravimetry（TG）. The resin＇s absorptivity, absorption rate and controlled-release property for different oil as well as its swelling kinetic were studied. The results show that the resin decomposes at 366.68 ℃, and its oil-absorbing behavior accords with the first-order kinetics. The resin＇s oil absorption rate depends on ionic polarity of different oils; the rate of absorbing CCl4 is the highest while the corresponding value of diesel is the lowest. The oil controlled-release performance of the resin is relevant to the type of oil; the release rate for diesel and petrol is rather low or even zero, but the corresponding rate for toluene and CCl4 is much higher.