EPDM-g-SAN接枝共聚反应的研究 |
Study on copolymerization of EPDM-g-SAN |
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DOI: |
中文关键词: EPDM 苯乙烯 丙烯腈 接枝共聚 |
英文关键词: EPDM styrene acrylonitrile graft copolymerization |
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中文摘要: |
探讨以正庚烷/甲苯混合物为溶剂,采用共聚法制备EPDM接枝聚苯乙烯-丙烯腈(EPDM-g-SAN)的反应条件。试验得出的优化反应条件为:单体苯乙烯/丙烯腈质量比 3/1,EPDM/单体质量比 45/55,引发剂BPO浓度 3.38×10-3mol·L-1,正庚烷/甲苯体积比 60/40,反应温度 80 ℃,反应时间 20 h。在此条件下,反应的单体转化率、接枝率和接枝效率分别为 75%,33%和 36%。红外光谱分析证明,EPDM分子链上接枝了SAN支链。 |
英文摘要: |
The copolymerization of EPDM-g-SAN usingn-heptane/toluene as solvent was investigated.The optimized reaction conditions from the test were as follows:the mass ratio of styrene monomer/acrylonitrile monomer 3/1,the mass ratio of EPDM/monomers 45/55,the concentration of initiator BPO 3.38×10-3mol·L-1,the volume ratio of n-heptane/toluene 60/40,the reaction temperature 80 ℃ and the reaction time 20 h.Under these conditions,the conversion,graft yield and graft efficiency of reaction monomers were 75%,33% and 36% respectively.It was confirmed by IRS that the branched chain of SAN was grafted on the back bone of EPDM. |
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