摘要
对机械加工不同程度、不同部位苦竹的自由基浓度进行了比较,并研究了胶粘剂的施加对自由基浓度的影响。结果表明,加工程度愈深,比表面积愈大,试样的自由基浓度愈大,竹棒试样的自由基浓度只有粉状试样的1/3～1/10;竹肉自由基浓度为竹青的两倍、竹黄的八倍;酚醛胶与脲醛胶的施加均使竹材试样的自由基浓度降低,说明胶与自由基产生了作用,但二者在ESR谱线上有明显不同。
Free radical contents of samples with different sizes and in various parts of bamboo wall were determined, and an effect of adding adhesives on free radical contents was also studied. The findings showed that the finer samples, the greater free radical contents, the free radical content of rod sample was only one third to one tenth as many as that of dust sample, and that the free radical content of the median part of bamboo wall was two times as many as that of the outer part, eight times the inner part, the addition of PF and UF made radical contents decrease, which demonstrated the adhesives had reacted with free radicals, but ESRs were different.
出处
《竹子研究汇刊》
北大核心
1991年第3期1-10,共10页
Journal of Bamboo Research
关键词
自由基
竹材
ESR
苦竹
Free radicals
ESR
Bamboo (Pleioblastus amarus)
Urea-formaldehyde resin
Phenol-formaldehyde resin
