聚(4,4-二甲基-1-戊-3- 1)的光解反应

Polymer Photochemistry Pub Date : 1984-01-01 DOI:10.1016/0144-2880(84)90071-X

Ikuo Naito, Kenji Imamura, Hisato Shintomi, Kazuyuki Okamura, Akihiro Kinoshita

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引用次数: 2

摘要

研究了在苯和二氧六环中，在30℃下，313 nm辐照下聚(4,4-二甲基-1-戊烯-3-酮)(PBVK)的光降解。发现PBVK的光解通过三态的I型和II型机制进行。测定了PBVK的主链断裂量子产率(φcs)在苯中为1·3 × 10−2，在二氧六烷中为1·8 × 10−2。II型反应的φcs估计约为7 × 10−3。

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Photolysis of poly(4,4-dimethyl-1-penten-3-one)

Photodegradation of poly(4,4-dimethyl-1-penten-3-one) (PBVK) by 313 nm irradiation was studied in benzene and in dioxane at 30°C. The photolysis of PBVK was found to proceed through both the Type I and Type II mechanisms via the triplet state. The quantum yield of main-chain scission (φ_cs) of PBVK was determined to be 1·3 × 10⁻² in benzene and 1·8 × 10⁻² in dioxane. φ_cs for the Type II reaction was estimated to be about 7 × 10⁻³.

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来源期刊

Polymer Photochemistry

CiteScore

1.20

自引率

0.00%

发文量