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以β-石竹烯和马来酸酐为原料,环己酮为溶剂,在过氧化二叔丁基(DTBP)的作用下,合成了β-石竹烯-马来酸酐共聚物(BCPMA)。探讨了反应温度,反应时间,单体物质的量比,溶剂用量以及引发剂用量对BCPMA产率的影响,并采用FTIR,1HNMR,GPC,元素分析对BCPMA的结构进行了表征,利用热重分析(TG)测定了BCPMA的热稳定性。结果表明:当反应温度145℃,反应时间1 h,n(马来酸酐):n(β-石竹烯)=2∶1,m(环己酮):m(β-石竹烯)=2∶1,DTBP加入量为4.5%(以β-石竹烯质量为基准,下同)时,BCPMA的产率最高,为92.9%。该共聚物的起始分解温度为370.6℃,具有较高的热稳定性能。
Β-Caryophyllene-Maleic Anhydride Copolymer (BCPMA) was synthesized from β-caryophyllene and maleic anhydride using cyclohexanone as a solvent under the action of DTBP. The effects of reaction temperature, reaction time, molar ratio of monomer, solvent and initiator on the yield of BCPMA were investigated. The structure of BCPMA was characterized by FTIR, 1HNMR, GPC and elemental analysis. (TG) was used to determine the thermal stability of BCPMA. The results show that when the reaction temperature is 145 ℃, the reaction time is 1 h, the molar ratio of n (maleic anhydride): n (β-caryophyllene) = 2:1, m 1, when the amount of DTBP added is 4.5% (based on the mass of β-caryophyllene, the same applies hereinafter), the yield of BCPMA is the highest at 92.9%. The initial decomposition temperature of the copolymer is 370.6 ℃, with high thermal stability.