γ射线引发甲基丙烯酸十二酯乳液聚合及其吸油性能的研究

Study of lauryl methacrylate emulsion polymerization by γ-rays irradiation and its oil absorption performances

讨论了以OP-10、十二烷基苯磺酸钠为乳化剂,γ射线引发甲基丙烯酸十二酯与少量N-羟甲基丙烯酰胺和丙烯酸乳液聚合制备高吸油性树脂。分别采用红外,SEM和TG表征了聚合物的成分、结构和热性能。SEM显示乳液胶束粒子尺寸均一,粒径约为170nm。聚合物在300℃以下时热稳定性良好。研究了反应条件如吸收剂量、剂量率、固含量、N-羟甲基丙烯酰胺和丙烯酸用量等对聚合物的吸煤油性能的影响。聚合物对煤油、氯仿、二甲苯的最大饱和吸油率(g/g)分别为18.1、19.5和15.3。

In this paper, a high-oilabsorption resin was prepared through the emulsion polymerization of lauryl methacrylate with additive of a small amount of N-hydroxymethyl acrylamide and acrylic acid, OP-10 and sodium lauryl benzenesulfate as the emulsifier, and initiated by γ-rays. Characterization analysis of the sample was carried out by FTIR, SEM and TG. SEM image shows that the morphology of the micelles from the polymer emulsion is regular, and the average particle size is about 170 nm. Polymer remains queit stable below 300℃. The influence of reaction conditions such as total absorbed dose, dose rate, solids content, N-hydroxymethyl acrylamide and acrylic acid con- tent on kerosene absorption performances of the polymer has been studied. The maximal saturated oil absorbed ratio （g/g） of kerosene, chloroform and dimethyl benzene is 18.1, 19.5, and 15.3, respectively.