Dec. 15, 1967
42962
CHEMISTRY
{CONF-670542-1} TRANSURANIUM ELEMENTS AS
BYPRODUCTS OF NUCLEAR FUEL REPROCESSING, Overveck,
W. P, (Du Pont de Nemours (E. 1.) and Co,, Aiken, $,C, Savanneh River Lab.), May 1967 Contract AT(07~2)-1. 16p,
Dep, CFSTI,
From Conference on Nuclear Power Fuel Reprocessing: Tech-
nology and Economics, Augusta, Ga,
The transuranlum (sotopes of principal interest are Pu, “Cm,
and ce,
tq
of these|
pes
can
as by products of the nuclear power industry if the necessary recovery factitties are provided. These quantities can be conaiderably enhanced through recycling of uranium and plutonium fuels.
Within the next 10 years, large-scale production of Pu and “Cm
could be achieved. If an adequate market can be developed, production of these transuranium isotopes could result in significant
Jong-term savings in the cost of nuclear power. (auth)
47063
(SUL-77-RB) RADIOAKTIVE MARKIERUNGEN IM
ELEKTRONENMIKROSKOP, (Radioactive Labeling in the Etec
tron Microecope), Riedel, G. (Kernforechur xeanlage, Juelioh
(Vest Germany), tnetitat fuer Reaktorbeustementes), June 1965,
2%, {in German). Dep.
Three articlea on radioactive labeling in the electron micro
scope are compiied. Preparation of an seroeo! tabeled with @
radioisotope for use in the electron microscope is described.
A means for electr
oscopic differentl
of
lat
of diverse origins exposed to a and f irradiation ia reported.
Improvement of the resolution of radioactive lebeling by atereoscopic picts: ¢ taking in the electron microscope is described
amd illustrated by sterececopic pictures. (J.5.R.)
2 ame
(NYO-844-71) NUCLEAR CHEMISTRY AND GEOCHEMISTRY RESEARCH, CARNEGIE INSTITUTE OF TECHNOLOGY, 1966-1967, Progress Report, (Carnegie Inst, of
Teoh., Pittsburgh, Pa. Dept. of Chemistry), June 30, 1967,
Conutracta AT(30-1)-844; AT(30-1)-3624, 74p, Dep, CFSTI,
Research progress fa reported on: M
ib
py of
Fe in coal, terrestrial occurrence and distribution of '1, y-induced nucleer reactions in natural materiale, activation analyola
of irom meteorites, jectopic composition of thajlium in meteorites,
plans for rad!
ic feotope studies of lunar materials, expectadon levels of
im Meteorites, search for radioactivity of “Ca,
counting systems, and cylindrica! anticoincidence guard counter.
™CG,)
4265
(ORO-2418-3) INFRARED SPECTRA OF PLASTICS
AND ELASTOMERS AFTER NUCLEAK IRRADIATION, Annual
Progress Report, Sears, W.C. (Georgia Univ., Athens,
of Physics), Sept, 12,1967, Contract AT(40-1)-2418,
1p,
Dep. CFSTI,
Since molar absorptivity for the trana-yinylene band in trans-1,
4-polybutadiene was found to change with temperature, a study of it
has begun to determine applicable absorptivities for analyzing irradiated palymers whose spectra have been measured at elevated
temperatures to eliminate crystallinity. It has been found that
mclar ebsorptivity drops sharply at 46°C in changing from crystal-~
Hne modification Ito Il. There is a possibility that this transition
temperature will shift to 76°C after being cooled from above 76°C
or to melt at 145°C to room temperature. Applicable tranavinylene absorptivities for analyzing irradiated Nedprenes may
be evaluated from the Neoprene polymera themselves or from
valaeg obtained [rom trans-1,4-polybutadiene. A study ia also in
progress on the effects of gamma rays on poly -2-vinylpyridine
and a 78/25 copolymer of 1,3~butadiene and 2-methyl-5-vinylpyrt~
dine. (auth)
aM
(NP-tr—-1565)
WOOD-PLASTIC COMPOSITE, WPC,
Miettinen, J, K, Translated from Kem, Teollisuus, 23: 10648(1966), 8p, Dep, CFSTI. JCL $1.10 fe, $0.80 mf,
Studies were made of the production of wood- plastic combloations by impregnating wood blocks with monomers and irradiating them. Bending strength of the wood waa Increhsed,
shearing strength increased, and water absorption decreased,
Dimangional changes in the wood were greatly reduced. Usea
of the wood- plastic combinations are discussed, (4.C.G.)
42067
THE RADIATION CHEMISTRY OF CYCLIC DIENES,
Tl, THE RADIOLYSTS OF 1,4-CYCLOHEXADIENE IN THE GAS
THASE, Nakegawa, Teunthiko; Takamubkn, Seteuc; Sakurai,
Hirosht (Omeke Univ.), Bull, Chem, Soc, Jap,, 0: 2081-5
(apt 1967),
The y radiotysia of 1,4-cyclohexadione vapor was taveatignted
at room temperature. The gaseous products were hydrogen, acetylene, ard 2d-butadiers Ranzene, cyclohexene, 1,2-cyclobexadiene,
and 1S, -haxstriene arr fdenrtfied as the low volatile Hautd produsta Te yfetd of each product wae almost independent af the dose
OT De TT wetle itway conarkatly depeadest om the
cette
.
53
gas pressure (8 to 56 mm Hg). The G-vatues of hydrogen, the C; +
C, gas fraction, benzene, and cyclohexene were 1.95, 1.25, 28.5, and
14,0, respectively at 42 mm Hg. The large ylelds of benzene and
cyclohexene may be explained in terms of a chain mechanism. The
pressure dependence of these products was very similar in both the
Hg-sensitized photolysis and the y radiolyats of this diene vapor.
The presence of the long-lifetime intermediates was
expected.
The experiments with nitric oxide added 20 0 radical scevenger
suggest that the main path of hydrogen formation te the radica! pro-
ceas. (auth)
42968
RADIOLYSIS OF Co'll-EDTA IN AQUEOUS SOLUTION;
THE YIELDS OF HYDROGEN AND HYDROGEN PEROXIDEIN 0.8N
SULFURIC ACID. Matauura, Niro (Tokyo Univ,}; Shinchara, Nobuyosht; Nishikawa, Masaru; Takitewa, Masao, Bull, Chem. Soc.
Jap., 40: 2042-7(Sept. 1967).
‘The hydrogen and hydrogen peroxide produced in the radiolysis
of CoB-EDTA (CoMY-) tn 0,8 N sulfuric acid were measured. The
yletde of hydrogen and hydrogen peroxide were found to be G.(H;' *
0.4 and G_(H,0,) © 2.5 for the aerated system, G«{H;) = 3.2 and
G .{H,0,) = 0 for the deaerated system were G.. denotes the yteld.
at the infinite solute concentration, The decomposition mechanism
proposed previously was discussed in detail on the basie of the
observed G,, (Hy) and G., (H,O,) and of the effect of chloride lon on
the decomposition yield G,+Co!ly-), A similar experiment was
carried out for EDTA alone and the decomposition mechenism !s
d. (auth)
4269
TON-MOLECULE REACTIONS IN THE RADIOLYSIS
OF ORGANIC LIQUIDS, Ward, James A,; Hamill, William H.
(Univ, of Notre Dame, Ind). J, Amer. Chem, Soo, 89: 511620(Sept, 27, 1967),
Conyentional carbonium ion reaction mechanisms provide a
basis for measuring yields of carbontum lons in suitable radiolytic systema, e.g., hydrocarbon-alcoho! Ilquid mixtures. Small
yields of products expected from carbontam fons were found:
anisole from benzene— methanol; cyclohexyl ethyl ether from cyloh
ethanol; t-butyl ethy! ether from neopentane~ ethanol;
ethyl acetate from acetone— ethanol, all at ca. 20°C. Complicating
ion-molecular processes may include proton transfer from
c-C,H}, and t~C,i} to C,H,OH as well as competition between
RH’ — R* +H and RH* + R'OH — R- + R’OHS. There ts evidence
for proton transfer from c-C,Hf, to ethanol, but not from neo-~
Cyitf. The structure of the parent molecule had a marked effect
on ylelds with G(carbonium ion) ranging from ~0,03 for benzene
to greater than 1.2 for neopentane. (uth)
42970
POSITRON ANNIRILATION IN RADIATION-INDUCED
SOLID-STATE POLYMERIZATION, Ogata, Atsushi; Tabata,
Yonsho; Hamaguchi, Hiroshi (Tokyo Univ,), Bull, Chem, Soc,
Jap., 40: 2205Sept, 1967).
Poaitron annihilation in the gamma-radioinduced, solld-state
polymerization of acetaldehyde was studied. It was found that the
positron lifetime spectrum was affected by both lattice deformation due to polymerization and accumulation of active species with
trradiation. It is believed that the variation of positren lifetime
spectra can give useful information about the mechanism of sol id~
state polymerization. (J.G.B.)
4297)
GRAFT-COPOLYMERIZATION OF N- VINYLPHTHA-
LIMIDE TO POLYETHYLENE BY y-RAY RADIATION. Murata,
Kenich! (Government Industrial Research Iost., Osaka). Bull.
Chem. Soc. Jap., 40: 2187~9(Sept, 1967).
The y radiolnduced graft polymerization of N-vinylphthalimide
to polyethylene was studied. The grafted film was reacted with
n-propylamine at room temperature, and the process of the resc-
tion traced by infrared spectra, Reauilts of dyeing the grafted film
as well ag the amine-treated film with direct, acid, basic, and
dispersed dyes are reported. The amine-treated films were dyed
more easily than the original ec oolymer. (J.G.B.)
42972
HYDROGEN ISOTOPE EFFECTS IN THE RADIOLYSIS
OF WATER, Vukmirovic, Zorka B, (Boris Kidric Inst, of NuClear Sctenoes, Belgrade), Israeli J. Chem, 5: 75-87(Maydune 1967),
The tritium fractionstion between water aud radicals formed in
the radiolysie of dilute solutions of monomerous methyl methacryJate in H,D-HTO and D,O- DTO mixtures was studied, A paralie!
determination of the tritium contest in molecular hydrogen was
performed. Also, the isotopic composition of the initia! molecular
was measured in the concentration range 10 to 9% mole
TyO of HyO- HDO—
mixtures, Hydrogen atoma, hydroxy! radicals, and molecular hydrogen produced in the radiviysts of three
solvents were found to be depicted in heavier hydrogen isctopes:
‘The lantope effects oa the compoat'!.a of hydrogea atoms sre diacuase-d tn terias of the rate jactepe effects ip proton transfer The
tacnupe effects ca the composition of hydyasy! radicals are close to