RATE OF INITIATION IN PHOTODEGRADATION OF POLY(METHYL METHACRYLATE).

被引：0
|
作者：
Selikhov, V.V. [1 ]
Ivanov, V.B. [1 ]
Shlyapintokh, V.Ya. [1 ]
机构：
[1] USSR Acad of Sciences, USSR, USSR Acad of Sciences, USSR
来源：
Polymer science USSR | 1986年 / 28卷 / 02期
关键词：
CHEMICAL REACTIONS - Photochemical Reactions;
D O I：
10.1016/0032-3950(86)90095-X
中图分类号：
学科分类号：
摘要：
The quantum yield in the formation of free radicals upon irradiation of PMMA with 254 nm light has been measured by the inhibition method, using substituted piperidine-and pyrroline-1-oxyls as radical acceptors. Kinetics of photochemical reactions of nitroxide radicals in this polymer has been investigated and the quantum yield has been determined. The values of quantum yield determined for the initiation in degradation of PMMA, together with existing data on the scission of macromolecular chains in photolysis of the solid polymer, enable one to estimate the amount of radicals necessary for a given lowering of PMMA molecular weight.
引用
下载
收藏
页码：385 / 389
相关论文
共 50 条
  • [41] PHOTODEGRADATION OF COPOLYMERS OF METHYL METHACRYLATE AND METHYL ACRYLATE AT ELEVATED TEMPERATURES
    GRASSIE, N
    TORRANCE, BJ
    COLFORD, JB
    JOURNAL OF POLYMER SCIENCE PART A-1-POLYMER CHEMISTRY, 1969, 7 (6PA1): : 1425 - &
  • [42] Fluorescence, room temperature phosphorescence and photodegradation of carbazole compounds in irradiated poly(methyl methacrylate) matrices
    Castex, M. C.
    Olivero, C.
    Pichler, G.
    Ades, D.
    Siove, A.
    SYNTHETIC METALS, 2006, 156 (9-10) : 699 - 704
  • [43] INFLUENCE OF AROMATIC-COMPOUNDS ON PHOTODEGRADATION OF STRESSED POLY(METHYL METHACRYLATE) AND CELLULOSE TRIACETATE SAMPLES
    GUSEVA, LN
    MIKHEEVA, LE
    MIKHEEV, YA
    TOPTYGIN, DY
    SHUBNYAKOV, VF
    VYSOKOMOLEKULYARNYE SOEDINENIYA SERIYA B, 1975, 17 (02): : 117 - 120
  • [44] Energy transfer and photodegradation of a Perylene Orange:LDS821 system in poly(methyl methacrylate)
    Sisk, Wade N.
    Tanaka, Nobuaki
    APPLIED OPTICS, 2006, 45 (21) : 5385 - 5390
  • [45] Poly(methyl methacrylate)-block-polyethylene-block-poly(methyl methacrylate) Triblock Copolymers as Compatibilizers for Polyethylene/Poly(methyl methacrylate) Blends
    Xu, Yuewen
    Thurber, Christopher M.
    Macosko, Christopher W.
    Lodge, Timothy P.
    Hillmyer, Marc A.
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2014, 53 (12) : 4718 - 4725
  • [46] TRANSPORT OF METHYL-METHACRYLATE MONOMER IN POLY(METHYL METHACRYLATE)
    HOPFENBERG, HB
    STANNETT, VT
    JACQUES, CHM
    JOURNAL OF APPLIED POLYMER SCIENCE, 1975, 19 (09) : 2485 - 2491
  • [47] Molecular mobility in poly(butyl methacrylate) and poly(methyl methacrylate)
    Sixou, B
    Menissez, C
    MOLECULAR SIMULATION, 2004, 30 (08) : 521 - 528
  • [48] RATE CONSTANTS DURING HYDROLYSIS OF SYNDIOTACTIC POLY(METHYL METHACRYLATE) WITH BASE
    KLESPER, E
    BARTH, V
    POLYMER, 1976, 17 (09) : 787 - 794
  • [49] Toughening poly(methyl methacrylate) with poly(butyl acrylate)/poly(methyl methacrylate) core/shell particles
    Ahn, TO
    Hwang, TW
    Jho, JY
    POLYMER-KOREA, 1997, 21 (02) : 289 - 295
  • [50] INITIATION OF ANIONIC-POLYMERIZATION OF METHYL-METHACRYLATE BY LIVING POLY(ETHYLENE OXIDE) ANIONS, A NEW WAY FOR THE SYNTHESIS OF POLY(ETHYLENE OXIDE)-BETA-POLY(METHYL METHACRYLATE)
    GARG, D
    HORING, S
    ULBRICHT, J
    MAKROMOLEKULARE CHEMIE-RAPID COMMUNICATIONS, 1984, 5 (09): : 615 - 618
12345