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Citation: HUANG Hong-Liang, YAO Zhan-Hai, ZHANG Jian-Guo, YIN Jing-Hua. Investigation of Reaction Mechanism of Maleic Anhydride Grafted onto Ethylene-Propylene Copolymer[J]. Chinese Journal of Applied Chemistry, ;2000, 17(3): 256-259. shu

Investigation of Reaction Mechanism of Maleic Anhydride Grafted onto Ethylene-Propylene Copolymer

1.
Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Received Date: 12 October 1999
Available Online: 17 January 2000
Fund Project: 国家自然科学基金(59873022) (59873022)"九七三"项目(G1999064806)资助课题 (G1999064806)

Squalane has been used as a simulated substrate to investigate the reaction mechanism of maleic anhydride in grafting onto ethylene-propylene copolymer in the presence of a peroxide initiator. Mass spectrometric analysis shows the products contain both poly(maleic anhydride) and squalane grafted maleic anhydride. This result indicates that instead of 150℃, the ceiling polymerization temperature of maleic anhydride as suggested by Gaylo rd, maleic anhydride can form short chain homopolymer even at 170℃, the reaction tempe rature used in this paper, in case of V(sq): W (MA): W (init)=100:2:0.2. ¹³C NMR study shows that maleic anhydride can be grafted onto both methine carbons and methylene carbons of squalane, but the amount of maleic anhydride grafted onto methine carbons is greater than that onto methylene carbons. Most maleic anhydride are grafted onto squalane in form of single unit due to the inter-and intramolecular hydrogen transfer.
- ethylene-propylene copolymer,
- grafting reaction,
- squalane,
- maleic anhydride,
- simulation investigation
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