✦ LIBER ✦

Comparative studies of reactions of commercial polymers with molecular oxygen, singlet oxygen, atomic oxygen and ozone—I. Reactions with cis-1,4-polybutadiene

✍ Scribed by J.F. Rabek; J. Lucki; B. Rånby

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 766 KB
Volume: 15
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(79)90042-9

No coin nor oath required. For personal study only.

✦ Synopsis

The oxidation of cis-l,4-polybutadiene by molecular oxygen, singlet oxygen, atomic oxygen and ozone has been studied using u.v. and i.r. spectroscopic methods. Some possible implications of the results of oxidation in the presence of singlet oxygen (parallel free radical oxidation) and atomic oxygen (formation of NO2 and its reaction with polymer) are discussed. Chain scission was observed during all types of oxidation. A new mechanism involving opening of double bonds and formation of biradicals has been considered in detail.

📜 SIMILAR VOLUMES

The production of vibrationally-excited

The production of vibrationally-excited oxygen molecules in the reactions of O(1D) atoms with molecular oxygen and ozone

✍ D.W. McCullough; W.D. McGrath 📂 Article 📅 1971 🏛 Elsevier Science 🌐 English ⚖ 476 KB

Measurements of the enhancement of CbrationalIyexcited 02('Zi) formation by added 02 in the UV flashphotolysis of 03'indicate that 02(3Z$v\*r,~ is formed in the deactitition cf O('D) by 02 with an efficiency of 5 0.3. These measurements are also consistent with the formation of 02(3~-) g y",,-, in t

Study of the reactions of oxygen atoms w

Study of the reactions of oxygen atoms with carbonothioicdichloride, carbonothioicdifluoride, and tetrafluoro-1,3-dithietane

✍ Irene R. Slagle; David Gutman 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 352 KB

The reactions of ground-state oxygen atoms with carbonothioicdichloride, carbonothioicdifluoride, and tetrafluoro-1,3-dithietane have been studied in a crossed molecular jet reactor in order to determine the initial reaction products and in a fast-flow reactor in order to determine their overall rat

ChemInform Abstract: Acceleration of Nor

ChemInform Abstract: Acceleration of Norrish Type I Reaction with Molecular Oxygen and Catalytic CBr4.

✍ Shin-ichi Hirashima; Tomoya Nobuta; Norihiro Tada; Akichika Itoh 📂 Article 📅 2009 🏛 John Wiley and Sons ⚖ 27 KB 👁 1 views

ChemInform Abstract: Mechanistic Study o

ChemInform Abstract: Mechanistic Study on the Reaction of Phenyldiazomethanes with Singlet Oxygen: Formation and Cycloreversion of 1,2,3,4-Dioxadiazole Intermediates.

✍ T. NOJIMA; K. ISHIGURO; Y. SAWAKI 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 29 KB 👁 2 views

Studies on the photo-oxidative mechanism

Studies on the photo-oxidative mechanism of polymers. VII. The role of singlet oxygen in the dye-photosensitized oxidation of cis-1,4- and 1,2- polybutadienes and butadiene–styrene copolymers

✍ J. F. Rabek; B. Rånby 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 531 KB

Temperature dependence of the rate const

Temperature dependence of the rate constants of the reactions of oxygen atoms with 1-pentene, 1-hexene, cis-2-pentene, and trans-2-pentene

✍ M. Weber; A. Hake; F. Stuhl 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 92 KB 👁 2 views

The kinetics of the reactions of ground state oxygen atoms with 1-pentene, 1-hexene, cis-2pentene, and trans-2-pentene was investigated in the temperature range 200 to 370 K. In this range the temperature dependences of the rate constants can be represented by k ϭ AЈ T n exp(Ϫ E a Ј/RT) with AЈ ϭ (1