摘要
用ESR分别对20,200和500mesh(目)的毛竹试样进行自由基强度的测定,最大的是500mesh,最小的是20mesh,g=2.003 3。经过紫外辐照后,毛竹表面的自由基强度明显增强,当辐照时间达到50min时,自由基趋于饱和,自由基强度是机械自由基的2倍左右,辐射产生的自由基强度随辐照时间按指数规律增长,3组试样的自由基衰变系数也各不相同。
ESR assay of the moso bamboo saw dust samples of the 20mesh.200mesh and 500mesh with g equaling 2. 003 showed that after the irradiation, the intensity of free radicals increased outstandingly. As the irradiation time reached 50mins, the free radicals tended to be saturated and the intensity of the free radicals was 2 times that of the mechanically produced free radicals. With the increase of the irradiation time, the intensity of free radicals increased exponentially. After irradiation, the decay coefficients of the free radicals of the three samples were different.
出处
《表面技术》
EI
CAS
CSCD
北大核心
2011年第6期65-67,104,共4页
Surface Technology
基金
国家自然科学基金资助项目(31170535)
福建省教育厅科学基金资助项目(JA10122)
关键词
毛竹
自由基
紫外光
增长
衰变
moso bamboo
free radical
UV-B
growth
decay
