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The influence of shape in the system polymethylmethacrylate-ethyl acetate
Abstracts
753
PLASTICIZATION .OF POLYMERS BY HIGH MOLECULAR COMPOUNDS
R . M. A s i m o v a , P . V. K o z l o v , V. A. K a r g i n a n d S. M. V t o r y g i n , V y s o k o m o l . s o e d i n . 4: No. 4, 5 5 4 - 5 5 9 , 1962. TIlE plastieizat.ion of eelltdose aeetobutyrate by the high molecular plasticizer, butadiene ~ilrile rubber, !ms been investigated. Temperature transitions and the mechanical properties ()t' the mixtures have been determined over a wide range of plasticizer concentrations. ln~ra-l)aeket plast.ieizati(m is obserw~d in the region of plasticizer-polymer compatibility: at hi(;h~r plasticizer concentrations the plasticization assumes an inter-packet eharaeter. Two glass transition temperatures appear on the thermo-meehanieal c u r v e - - a t the e~')n('cniration range of plasticizer at which the mixture eompen~,nts are incompatible. Con(.urrenlly the sy:*tem assumes a heterogenie character, leading to brittleness. THE INFLUENCE OF S H A P E IN THE SYSTEM POLYMETHYLMETHACRYLATE E T H Y L ACETATE
E. V. F r i s m a n , N. K , Y a n o v s k a y a a n d V. P. B u d t o v , V y s o k o m o l . s o e d i n . 4: No. 4, 5 6 0 - 5 6 5 . 1962. .\ ,;'r,l)v ()f the ttox~ birefringenee in ethyl acetate solutions of polymethyhnethaeryla~e has revealed a linear D~]/[r/]--31[q] relationship in accord with the theory developed lbr (laussian coils. The relationship was used to determine the optical anisotropy of the segmenl (%-- z2) and the Flory constant. The assymetry of the molecular ellipsoM coil was determined lo t)e 1)=-2.21. The concentration dependence of the shape effect for this system confirms the lhe~)retieal r~,lations deduced earlier. INVESTIGATION OF CHELATE POLYMERS--IV. POLYMERS ALKYLPYRIDINEAMIDO)-DIPHENYLS W I T H METALS
OF 4,4'-bis-(~-THIO-
A. P. T e r e n t e v , E. G. R u k h a d z e , V. V. R o d e a u d G. V. P a n o v a , V y s o k o m o l . s o e d i n . 4: No. 4. 5 6 6 - 5 7 0 . 1962.
('llFA,ATE l)olymers of 4,4"-bis.(~.-thioalkylpyridineamido).dit)henyl and t.he divalent mebals copper, nickel, zinc and cobalt have been synthesized. A number of physieo-ehemieal determinatiolfs have been nmde upon them, namely, Dehye diffraction patt.erns, thermal and chemical stabilities, reflection and luminiseenee spectra and magnetic susceptibilities. ()n the basis of the magneto-chemical studies sugfzest ions haw ~been made as to the structure ,d" t.ht' chelate hundles of the compounds. SYNTHESIS OF N E W CELLULOSE AND OTHER POLYSACCHARIDE D E R I V A T I V E S - XIX. SYNTHESIS OF CELLULOSE AND CARBOCHAIN GRAFT COPOLYMERS W I T H OUT THE SIMULTANEOUS FORMATION OF HOMOPOLYMERS
Z. A. R o g o v i n , S u n T u n , A. D. V i r n i k a n d N. M. K h v o s t e n k o , Vysok.omol. s o e d i n . 4: 5 7 1 - 5 7 6 , 1962. .k METIfOI) for the synthesis of graft cellulose and vinyl eopolymers without the simul,aneous fornmtion of homopolymers has been developed. The method is based on the preliminary formation of little-substituted cellulose ester or ether containing an aromatic amine group followed by diazotization and formation of a maeroradieal grafting initiator. The Publisher will be pleased to quote for the supply of a full English translation of any paper abstracted in these pages.
753
PLASTICIZATION .OF POLYMERS BY HIGH MOLECULAR COMPOUNDS
R . M. A s i m o v a , P . V. K o z l o v , V. A. K a r g i n a n d S. M. V t o r y g i n , V y s o k o m o l . s o e d i n . 4: No. 4, 5 5 4 - 5 5 9 , 1962. TIlE plastieizat.ion of eelltdose aeetobutyrate by the high molecular plasticizer, butadiene ~ilrile rubber, !ms been investigated. Temperature transitions and the mechanical properties ()t' the mixtures have been determined over a wide range of plasticizer concentrations. ln~ra-l)aeket plast.ieizati(m is obserw~d in the region of plasticizer-polymer compatibility: at hi(;h~r plasticizer concentrations the plasticization assumes an inter-packet eharaeter. Two glass transition temperatures appear on the thermo-meehanieal c u r v e - - a t the e~')n('cniration range of plasticizer at which the mixture eompen~,nts are incompatible. Con(.urrenlly the sy:*tem assumes a heterogenie character, leading to brittleness. THE INFLUENCE OF S H A P E IN THE SYSTEM POLYMETHYLMETHACRYLATE E T H Y L ACETATE
E. V. F r i s m a n , N. K , Y a n o v s k a y a a n d V. P. B u d t o v , V y s o k o m o l . s o e d i n . 4: No. 4, 5 6 0 - 5 6 5 . 1962. .\ ,;'r,l)v ()f the ttox~ birefringenee in ethyl acetate solutions of polymethyhnethaeryla~e has revealed a linear D~]/[r/]--31[q] relationship in accord with the theory developed lbr (laussian coils. The relationship was used to determine the optical anisotropy of the segmenl (%-- z2) and the Flory constant. The assymetry of the molecular ellipsoM coil was determined lo t)e 1)=-2.21. The concentration dependence of the shape effect for this system confirms the lhe~)retieal r~,lations deduced earlier. INVESTIGATION OF CHELATE POLYMERS--IV. POLYMERS ALKYLPYRIDINEAMIDO)-DIPHENYLS W I T H METALS
OF 4,4'-bis-(~-THIO-
A. P. T e r e n t e v , E. G. R u k h a d z e , V. V. R o d e a u d G. V. P a n o v a , V y s o k o m o l . s o e d i n . 4: No. 4. 5 6 6 - 5 7 0 . 1962.
('llFA,ATE l)olymers of 4,4"-bis.(~.-thioalkylpyridineamido).dit)henyl and t.he divalent mebals copper, nickel, zinc and cobalt have been synthesized. A number of physieo-ehemieal determinatiolfs have been nmde upon them, namely, Dehye diffraction patt.erns, thermal and chemical stabilities, reflection and luminiseenee spectra and magnetic susceptibilities. ()n the basis of the magneto-chemical studies sugfzest ions haw ~been made as to the structure ,d" t.ht' chelate hundles of the compounds. SYNTHESIS OF N E W CELLULOSE AND OTHER POLYSACCHARIDE D E R I V A T I V E S - XIX. SYNTHESIS OF CELLULOSE AND CARBOCHAIN GRAFT COPOLYMERS W I T H OUT THE SIMULTANEOUS FORMATION OF HOMOPOLYMERS
Z. A. R o g o v i n , S u n T u n , A. D. V i r n i k a n d N. M. K h v o s t e n k o , Vysok.omol. s o e d i n . 4: 5 7 1 - 5 7 6 , 1962. .k METIfOI) for the synthesis of graft cellulose and vinyl eopolymers without the simul,aneous fornmtion of homopolymers has been developed. The method is based on the preliminary formation of little-substituted cellulose ester or ether containing an aromatic amine group followed by diazotization and formation of a maeroradieal grafting initiator. The Publisher will be pleased to quote for the supply of a full English translation of any paper abstracted in these pages.