[3] REX R W. Electron paramoneuc resonance studies of stable free radicals in lignins and humic acide[J]. Nature, 1960, 188(4): 1185-1186.
[4] XU Hong-lin, ZHANG Wen-hui. Wood surface mechanical free radical research[J]. Journal of Nanjing Forestry University, 1993, 17(1): 69.
[6] KRIROGUZ Y M, PESETSKII S S, JURKOWSKI B. Grafting of itaconic acid onto LDPE by the reactive extrusion:effect of neutralizing agents[J]. Journal of Applied Polymer Science, 2003, 89(3): 828-836.
[7] LI Ying, XIE Xu-ming, GUO Bao-hua. Study on styrene-assisted melt free-radical grafting of maleic anhydride onto polypropylene[J]. Polymer, 2001, 42(1): 3419-3425.
[8] KIM B K, SHON K H, JEONG H M. Modification of polystyrene by reactive extrusion with peroxide and trimethylolpropane triacrylate[J]. Journal of Applied Polymer Science, 2004, 92(3): 1672-1679.
[9] DU Guan-ben, YANG Zhong, QIU Jian, et al. Microwave plasma processing southwest Kay wood surface ESR and XPS analysis[J]. Forestry Science, 2004, 40(2): 148.