摘要
采用1,4-二氯甲氧基丁烷(BCMB)为氯甲基化试剂,在Lewis酸ZnO/1,1,2-三氯乙烷的均相反应体系中高效的进行了酚酞聚芳醚砜(PES-C)的氯甲基化,观察了溶剂和催化剂等因素对氯甲基化反应的影响,得到了PES-C氯甲基化的最佳条件。由1H NMR方法表征了氯甲基化的酚酞聚芳醚砜(CMPES-C)的结构及氯甲基化程度(χCH2Cl-)。实验结果表明,BCMB完全可以替代氯甲醚,在相似的反应条件下对PES-C树脂进行有效的氯甲基化改性,ZnO/1,1,2-三氯乙烷体系在温和的反应条件下可制得适度的(χCH2Cl-为0.2~0.6)且完全线型结构的CMPES-C。
Chloromethylation of phenophthalein polyether sulfone(PES-C) was performed in a homogeneous system using 1,4-bis(chloromethoxyl)butane(BCMB) as the chloromethylation reagent.Chloromethylation of PES-C(CMPES-C) with an appropriate chloromethylation degree and complete linearity was obtained under the optimum reaction conditions.The chemical structures and compositions of the products were characterized by IR and 1H NMR.The chloromethylation degree and properties of CMPES-C,such as solubility in common organic solvents and thermal stability compared with phenophthalein polyether ketone(PEK-C) were also discussed.The chloromethylation degree was determined by 1H NMR integration.
出处
《应用化学》
CAS
CSCD
北大核心
2011年第12期1360-1363,共4页
Chinese Journal of Applied Chemistry
基金
吉林省科技发展重大项目(20106017)
关键词
二氯甲氧基丁烷
氯甲基化改性
酚酞聚芳醚砜
bis(chloromethoxyl)butane
chloromethylation modification
phenophthalein polyether sulfone