摘要
研究了光引发剂二苯甲酮（ＢＰ）在紫外光照射下与ＬＤＰＥ薄膜发生光还原反应（即氢消除反应）动力学及其影响因素。考察了紫外光照射强度、氧气、温度的影响，得出ＢＰ的光还原反应速率与浓度及光强的关系为：Ｒ∝Ｉ０．５ｃ０．７，光还原反应的表观活化能为２７３ｋＪ／ｍｏｌ。
The photoreduction
reaction kinetics of BP which take place in the interlayer between the LDPE film were studied. The
effect of some principal reaction parameters on reaction, such as temperature, oxygen and the
intensity of UV, was measured. The results show that the rate of photoreduction reaction follows
the relation: R∝I 0.5 c 0.7 . The apparent activation energy E a is 27 3kJ/mol. At the
same time the mechanism of photoreduction of BP under UV irradiation was discussed too.
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
1999年第1期31-33,40,共4页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
基金
国家自然科学基金
