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Page 11 35--Synthetic High Polymers Vol. 78, 1973 160277 Kagoku [Kyoto) 1972. 27(2). VJ1-9 (Japan). A discussion on lG0269h Effect of electrodclcss glow discharge on polymers. conformational anal, of polymers. K. Yamoguchi 160252b Influence of the method of removing the unstable tin and of the modification with pnlytethyicne oxide) on Yasuda. H.; Lamaze, C. E.: Saltaoku, K. (Camille Dreyfus Lab., Res. Triangle Inst., Research Triangle Park. N. C.). J. Appt. Polym, Sci. 1973, 17(1), 137-52 (Eng). Gas plasma from decomposition of trioxane-dioxolcne copoiymors at electrodeless glow discharge caused predominantly degrdn. in led temperatures in air, Feiein. -J. (Inst. Lnd. Client., polymers, leading to exposure-area and -time dependent wt. loss. Warsaw, Pol.)- Hoc:. Chen. 1972, 46(9), 1503-12 (PoCl).rdsslinking, except in polymers contg. double bonds, was Tnoxane-aiuxoianc copolymer 11) [24969-26*4) contg. 5% negligible. Both degrdn. and cro&stinkmg by gas plasma were tiinxolane and 1 omionailv moditied with 27c polyethylene oxide) generally limited to the exposed surface, but for butadiene-sty [25522-8!(-3l were decompd. at 140-60 Unstable I fractions were rene copolymers [901)3-55-8) the crosslinking propagated in the removed uefore decompn. by ,3 methods: by heating at 150 in direction of the thickness. Discharge power and type ol gas PhCH.OH sojn. with addn. ot t% triethanolamine. by heating a greatly influenced both the rate of wt. loss and the morpliol. of suspension of l :n 5% KOH. or oy heating I under pressure in a the exposed surface. Polymers contg. ether, CO and OH groups, H*0-PhCH_OH-triethanolamine mist, at 150. The first particularly attached to aliph. chains, had high plasma (homogeneous! method was the most efficient, since no decoinpn. susceptibility. occurred at 140 or 150, although liecompn. was accelerated at 160270b Study of radiation-induced grafting by differential 160. Poivether fragments in modified 1 diminished its thermal scanning calorimetry, Kamel, lhab; Kusy, R. P.; Corneiiussen, stability W. Gustowski R. D. (Dep. Metall. Eng.. Drexel Univ., Philadelphia. Pa.). 160264c Optically active polysulfonamides. Synthesis of the Macromolecules 1973, 6(1), 53-8 (Eng). -y-Irradn. grafting of polycondensate of L-lvsine and 1,3-benzcneuisuironyl chloride. styrene (I00-42-5J onto low-density polyethylene (9002-38-4) Pol'veiectrolvtic properties. Chelation of copper) li) ions. film lowered both the melting point and heat of fusion during the Beaumais, J.: Fenvo. J. C.: Selegnv. E. lLab. Cliim. first differential scanning calorimetry (DSC) detn. In later )SC Macromol.. Univ. Rouen. Mont-Saint-Aignan. Fr.). Eur. detns. the melting point depression was constant, while the ncut Polym. J. 1973. 9(1), 15-26 (Fr). 1,3-Bemenedisulfonyl of fusion increased to the original value, and became grait independent; thus the heat of fusion detd. in the 2nd Dm run was used in apnarent graft ealens. The lower heat of fusin'! onsd. in the DSC run was due to graft-induced strain on the crvstal --so* surface, later relieved by melting and recrystn. The 1st heat of fusion detd. and the degree of covalent graiting correlated. 160271c Cleavage of polytvinyl alcohol) in the presence of cobalt(II) and -(III) and tert-bulyl hydroperoxide in dimethyl sulfoxide and water solutions. Auerbach, A.; Jocnsberger, T.; Indictor, N. (Brooklyn Coll,, City Univ. New York, Brooklyn, chloride-i.-lysine ethyl ester copolymer [39534-61-7] was prepd. N. Y.l, Macromolecules 1973, 6tl), 143-5 iEng). The rate ot by mteriacial poivmn. and hydrolvzed to 1.3-ben:enedisullunvl Co acetylacetonate induced decompn. of ten-butyl hydropero chtonae-L-lysme copolymer (I) (39524-62-81. I was shown by xide 175-91-21 was similar in MeiBO and H.O systems; cleavage viscoraetrv to be a poiyeiectrolyre, ana its ionization cunsts. as a did not depend on peroxide decompn. An NMH contact shift, poiymeric dibasic acid were ealed. 1 formed a Cu chelate, due to a paramagnetic cobalttll) acetvlacetonate-polyivinyi ale.) assumed by antilogy witn monomeric chelates to have the complex was not obsd. on addn. of water traces to Me.BO solns. structure II. the potentiometnc ana spectral properties of which Cobalttll) acetylacetonate [14024-45-7] increased the polymer were detd, decompn. rate more than cobalt)111) acetylacetonate 121679-46-9) 1602(i5d Alkaline hydrolysis of copolymers of vinyl acetate in both water and Me^SO. acrylic esters bearing ether groups in their structure, 160272d Characterization of chain conformation and amo. J. M.. Arranz. F. (Inst. P'.ast. Caucho. Madrid, nl. Ret. Plast. Mod. 1972, 241197). 749-56 (Span). The hydrolysis rate of poiyicin\i acetate) ill [9003-20-7] was reauced by eccolymn. with etnyiene glycol monoetnyi ether thermodynamics of extremely high-molecular weight polys= tyrenes. Slagowski, Eugene L. tCniv. Akron. Akron. Ohio). 1972. 303 pp. lEng). Avail. Univ. Microfilms. Ann Arbor, Mich., Order No. 73-7693. From Diss. Abstr. Int. B 1973. 33191, acrylates and 'he const, lor glvcoi initiation of hydrolysis IKJ 4227. was increased except in cases where a low water concn. in the 160273c Calorimetric studies of bulk polymers. Beatty, hydrolysis medium permuted localized concn. of NaOH. I, and Charles Lee (Univ. Massachusetts, Amherst. Mass.). 1972. vinyl acetate copoiymd. with 10. 20, and 30% ethylene glycol 235 pp. (Eng). Avail. Univ. Microfilms, Ann Arbor, Mich.. monoethyl ether acr.oate til* [106-74-1], atethylene glycol Order No. 73-5526. From Diss. Abstr. Int. B 1973, 33i9t, 4225-6. monoethvl ethc acrylate [7329-17-3) and methylene glycol 16027 tf Initial steps of the thermal degradation of monoethyl ether acrylate 139670-09-21 were hydrolyzed with poly(vinylchloride). Guyot, A.; Bert, M. (Inst, Rech. Catal., NaOH at 25 in 35:13 and 70:30 acetone-water mixts. In the CNRB. Lyon/Villeurbanne, Fr.). Polym. Prepr., Amer. Cheat. system contg 15% H;0 the hydrolysis rate was substantially Sac.. Dw. Polym. Chem, 1971, 12(2), 303-12 (Eng). reduced only for the Il-ccntg. polymer but K., increased with Preliminary studies of the initial steps in the thermal degrdn. of increasing acrylate monomer concn. for all polymers. In the PVC [S002-86-2], using sensitive HC1 measurements, indicated system contg. 30% HjC the stability to hydrolysis increased for linear dehydrochlorination at temps, below 120 and an initial aU the copolymers in comparison with l. acceleration followed by a constant rate for higher temps. The \t 183266e Thermal stability of FYC obtained in o-dichlorob= enzenc by a radical route. Lopez Madpjga, B. E.: Carcamo. J, M. (Sec. Quim. Macromol.. Inst. Plast. Caucho. Madrid, Spain). Rev. Plast. Med. 1972. 24(197). 771-5 (Span). activation energy for the process was 22 kcal/mote. 163275s Mechanisms for the thermal decomposition of polyethylene. Bailey, William John; Baccei. Louis J. (Dej. Chem., Univ, Maryland, College Park. Md.). Polym. Frepr., The rate of dehydrochlorination oi poiytuinyt chloride) [9002-83-= Amer. Chem. Soc., Dio. Polym. Chem. 1971, 12(2), 313-18 2] was inversely proportional to the mol wt. for samples with the (Eng). The products from the thermal decompn, of a 1:1 same degree of stereoregularity. Vinvi chloride was polvmd. at polyethylene ]S002-8S-4 ]-po(v( tetrcdeuterioethylene) [25349-38-- 3-6 mcle/1. concn. in o-dichlorobenzene in tne presence of 3 x 8| mixt. at 420, 520, and 620 indicated that ethylene, propane 10",i mole/lOt'4) 2.2'-azobisisobutyr:mtn!e. At 30 PVC samples and butadiene were formed by intramol. mechanisms, that of mol. wt. 104,000-160,0(4) were obcained and at 50 the mol. wt. 1-butene, butane, and pentane were formed by intermol. range was 62,000 to 39.000 The dehydrochlorination rate decreased with increasing mol. wt through both ranges at 170 and 130. 1302577 Dynamic thermogravimetrio analysis of polystyrene. mechanism, and that propylene and 1-pentene were by a combination of intermol. and intramol. mechanisms. 160276b Mechanism of polyethylene photodegradation. Oxidation of terminal olefins and saturated centers with Effect of molecular weight on tnerm.il decomposition. Kokta, B. V.; Valsde. J. L.; Martin, W N Dep. Ing . Univ, Quebec. Trois-Rivieres, Que.). J. A.ppt. Polym. Set. 1973, 17U), 1-19 (Erg). Dynamic thermogravmetrc a.oal. of polystyrene (I) [fC03-33-6) showed that the max rate, the av specific rate and the activation energy of thermal ceiumpn. increase up to mol. of CCO crii '`--n letoi ru-.' va'a'n ene'gy f -r -'he pert of the ceoyisn. was 3:*-.' hiai.'m'k and for tne r.d part was 50 -- 5 seal mole Overall activation energy cr ?ccmpn. cr 1 wa 42-5 Kcai mole 1'`m',24;'5 Degradation of c-olv'v.nyl chloride!. II Oxidative V Ctgradation in solution. Hcreor., J. H, L.: Hybart. F J. (Dep. Chetn.. Urav Aston. Birmingi-am. Ergi I. J. Apol. Polym. So. singlet oxygen. Kaplan, M. L.: Kelieher, P. G. iBell Lab., Murray Hill, N, J.). Polym. Prepr., Amer. Chem, Soc.. Dio. Polym. Chem. 1971. 12<2i. 319-22 (Eng1. Tetracosane il) [646-31-1] and l-docosene (II) [1399-67-31, as model compos, for polyethylene (HI) [813)2-88-4), were oxidized and excited with mol. O to elucidate the early stages of the p hot i negro n. ct 111 The hvd.r''Fer".tide content of 1 and II a/ter I'vd;:. were ' *'.*'`3 and 0.7%. The presence of OOH m 1 indicated that singiec U could insert into a CH bona ordbstrac: a h. ltil)277i Elueidation of coordination polymer stoichiometry via thermometric titrimetry. Metal complexes of Inthiocvanuric acid. Beezer. A. E,, Chudy. J. C. Che.sea Coil., Unit London. London, Engl.). Thermoch,mtca Acta 1973. 6l2). 1573. 17(11, 129-';8 'Engl The rate oi oxidative degrdn of PVC [5C32-83-2) spin. in Ph FO, depended cr. the partial pressure of O and was not decreased by phenol, quinone. and amine antioxidants. 231-7 1 Erg 1. I he Stoichiometry ot eoc'rriinJ'i"ii polvtners formed bv tnthiocyanunc acid il) [2060-82-4! with metals in DMF and aq solns.. detd. using thermometric tit.-tmetre, varied from O CO h- O