纤维素-甲基丙烯酸丁酯接枝聚合吸油材料的表征及其吸油性能

以纤维素(棉浆粕)为基材、硝酸铈铵-HNO_3为引发剂、甲基丙烯酸丁酯(BMA)为接枝单体、N,N′-亚甲基双丙烯酰胺为交联剂,采用悬浮振荡接枝聚合法合成了棉浆粕-BMA接枝聚合吸油材料。用FFIR,XRD,SEM,TG-DSC等分析手段对产物的结构进行了表征,提出了用聚合度增量法测定产物接枝率的新方法,并对产物的吸油率、保油率、吸油速率、水面浮油回收率等吸油性能及其重复使用性能进行了分析。实验结果表明,产物为棉浆粕与BMA的接枝聚合物,该产物对黏度较大和极性较强的油品有较高的吸油率,对各类油品都具有较高的吸油速率,对不易挥发的油品有较好的保油率,水面浮油回收率低于产物饱和吸油率,回收规律与吸油规律基本一致,即吸油性能较好的试样对水面浮油的回收能力也较高。

Characterization and Performance of Graft Butyl Methacrylate-Cellulose Copolymer as Oil Absorbent

A cellulose-based oil absorbent,butyl methacrylate-cellulose(cotton pulp)graft copolymer,was synthesized using butyl methacrylate as grafting monomer,Ce(NH_4)3(NO__3)6/HNO_3 as initiator and N,N′-methylene-bis-acrylamide as crosslinker on the cellulose substrate by suspension graft copolymerization.The synthesized graft copolymer was characterized by means of FTIR,XRD, SEM and TG-DSC.A new method of determining the graft yield by polymerization degree addition method was suggested.The product's oil absorption properties such as oil absorption,oil retention,oil absorption rate,recovery of floating oil on the water surface and repeatability were evaluated.The results showed that the product,poly(butyl methacrylate)-cotton pulp graft copolymer,had strong oil absorption to sticker and more polar oil,a high oil absorption rate for various oil and good oil retention for less volatile oils.Its recovering ability to floating oil on the water surface was lower than its saturated oil absorption.