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Radiation-induced bulk polymerization of 2-methyl-5-vinyltetrazole under γ-irradiation γ辐照下2-甲基-5-乙烯基四唑的本体聚合
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90219-G
A.T. Govorkov, Ye.V. Muryshkina, G.P. Khokhlova, Ye.A. Bannova
{"title":"Radiation-induced bulk polymerization of 2-methyl-5-vinyltetrazole under γ-irradiation","authors":"A.T. Govorkov,&nbsp;Ye.V. Muryshkina,&nbsp;G.P. Khokhlova,&nbsp;Ye.A. Bannova","doi":"10.1016/0032-3950(91)90219-G","DOIUrl":"10.1016/0032-3950(91)90219-G","url":null,"abstract":"<div><p>The radiation-induced bulk polymerization of 2-methyl-3-vinyltetrazole has been investigated by infra-red, capillary viscometry, GPC, EPR and gas chromatography. On the basis of the data obtained by these methods confirmation of the radical mechanism of the reaction has been obtained. The process is accompanied by tetrazole ring opening and by nitrogen elimination. The radiation chemical yield amounted to 9.6 molecules per 100 eV. The polymethylvinyltetrazole is an amorphous polymer with parameters equal to those of the polymer obtained with “substance” type initiation.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 6","pages":"Pages 1138-1142"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0032-3950(91)90219-G","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82476001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Aspects of the copolymerization of ethylene with acetylene on complex organometallic catalysts 复合有机金属催化剂上乙烯与乙炔共聚的研究进展
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90181-O
L.N. Russiyan, P.Ye. Matkovskii, V.N. Noskova, A.Kh. Yusupbekov, L.N. Raspopov, V.M. Rudakov, V.A. Shtarkin
{"title":"Aspects of the copolymerization of ethylene with acetylene on complex organometallic catalysts","authors":"L.N. Russiyan,&nbsp;P.Ye. Matkovskii,&nbsp;V.N. Noskova,&nbsp;A.Kh. Yusupbekov,&nbsp;L.N. Raspopov,&nbsp;V.M. Rudakov,&nbsp;V.A. Shtarkin","doi":"10.1016/0032-3950(91)90181-O","DOIUrl":"10.1016/0032-3950(91)90181-O","url":null,"abstract":"<div><p>The effect of various factors on the kinetics of the consumption of the comonomers during polymerization of ethylene with acetylene on vanadium- and titanium-containing complex catalysts and on the structure of the products formed has been studied. The kinetic method shows that the reactivity of acetylene in the course of copolymerization on complex catalysts exceeds that of ethylene. The copolymerization products of ethylene with acetylene are coloured, contain conjugated and vinyl double bonds, attach ozone, bromine, iodine and maleic anhydride, display paramagnetism and contain a considerable quantity of the crystalline phase. All this indicates that they are block copolymers of ethylene with acetylene. It is shown that the block copolymers in the course of combined polymerization of the two monomers can form only with the condition <em>k</em><sub>12</sub>→0 and <em>k</em><sub>21</sub>→0.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 2","pages":"Pages 206-215"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0032-3950(91)90181-O","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86672924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the intramolecular ordering and the mobility mechanism in solutions of comb-like polyalkyl methacrylates 梳状聚甲基丙烯酸酯的分子内有序及其在溶液中的迁移机理
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90098-B
T.I. Borisova, L.L. Burshtein, V.P. Malinovskaya, V.P. Shibayev
{"title":"On the intramolecular ordering and the mobility mechanism in solutions of comb-like polyalkyl methacrylates","authors":"T.I. Borisova,&nbsp;L.L. Burshtein,&nbsp;V.P. Malinovskaya,&nbsp;V.P. Shibayev","doi":"10.1016/0032-3950(91)90098-B","DOIUrl":"https://doi.org/10.1016/0032-3950(91)90098-B","url":null,"abstract":"<div><p>The dipole polarization relaxation method was used to investigate molecular mobility in solutions of polyhexadecylmethacrylate (PMA-16) in toluene. The previously obtained data on molecular mobility in polymers of type PMA-<em>n</em> (<em>n</em> = 1, 4, 8, 10, 16 and 22) have been analysed. It is shown that a new relaxation process appears as a result of the partial aggregation of side-chains in the case where <em>n</em> &gt; 10.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 10","pages":"Pages 1993-1998"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0032-3950(91)90098-B","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90024101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Effect of precipitants on the phase equilibrium of solutions of polystyrene close to the upper and lower critical solution temperatures 沉淀剂对接近上下临界溶液温度的聚苯乙烯溶液相平衡的影响
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90289-3
S.A. Vshivkov
{"title":"Effect of precipitants on the phase equilibrium of solutions of polystyrene close to the upper and lower critical solution temperatures","authors":"S.A. Vshivkov","doi":"10.1016/0032-3950(91)90289-3","DOIUrl":"https://doi.org/10.1016/0032-3950(91)90289-3","url":null,"abstract":"","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 12","pages":"2376-2383"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0032-3950(91)90289-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72231243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The change in the properties of blends of polypropylene and high-density polyethylene during high-shear extrusion 聚丙烯与高密度聚乙烯共混物在高剪切挤出过程中的性能变化
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90298-5
N.N. Komova, V.M. Gol'dberg, A.N. Kryuchkov, E.V. Prut, V.V. Gustov
{"title":"The change in the properties of blends of polypropylene and high-density polyethylene during high-shear extrusion","authors":"N.N. Komova,&nbsp;V.M. Gol'dberg,&nbsp;A.N. Kryuchkov,&nbsp;E.V. Prut,&nbsp;V.V. Gustov","doi":"10.1016/0032-3950(91)90298-5","DOIUrl":"https://doi.org/10.1016/0032-3950(91)90298-5","url":null,"abstract":"","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 12","pages":"2445-2452"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0032-3950(91)90298-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72231236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Viscosity of moderately concentrated solutions of copolymers and the acrylamide homopolymer 中等浓度的共聚物和丙烯酰胺均聚物溶液的粘度
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90150-O
V.P. Budtov, L.A. Itskovich, V.Ya. Kabo, V.A. Maslennikov, L.V. Mineyev
{"title":"Viscosity of moderately concentrated solutions of copolymers and the acrylamide homopolymer","authors":"V.P. Budtov,&nbsp;L.A. Itskovich,&nbsp;V.Ya. Kabo,&nbsp;V.A. Maslennikov,&nbsp;L.V. Mineyev","doi":"10.1016/0032-3950(91)90150-O","DOIUrl":"10.1016/0032-3950(91)90150-O","url":null,"abstract":"<div><p>The viscosities of dilute and moderately concentrated solutions of PAA (<em>M</em> × 10<sup>6</sup> = 0.43–6.5) have been studied in aqueous and water-methanolic solutions and acrylamide and sodium acrylate copolymers (composition <em>α</em><sub><em>h</em></sub> = 0.05–0.6, <em>M</em> = 3.1 × 10<sup>6</sup>) in aqueous NaCl solution. The experimental data are compared with the theoretical results. Correlations describing the observed patterns have been obtained.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 5","pages":"Pages 862-870"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0032-3950(91)90150-O","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83138694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal decomposition of poly-n-butylcyanoacrylate in the presence of various additives 在各种添加剂的存在下，聚氰丙烯酸正丁酯的热分解
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90091-4
M.I. Frolova, L.A. Oshmarina, V.I. Chervyyakova, E.G. Pomerantseva
{"title":"Thermal decomposition of poly-n-butylcyanoacrylate in the presence of various additives","authors":"M.I. Frolova,&nbsp;L.A. Oshmarina,&nbsp;V.I. Chervyyakova,&nbsp;E.G. Pomerantseva","doi":"10.1016/0032-3950(91)90091-4","DOIUrl":"https://doi.org/10.1016/0032-3950(91)90091-4","url":null,"abstract":"<div><p>The effect of sodium hydroxide, zinc chloride, piperidine and <em>p</em>-toluene sulphonic and orthophosphoric acids on the thermal decomposition of poly-<em>n</em>-butylcyanoacrylate has been studied by TGA, DTA, IR spectrometry, etc. The ionic mechanism of the decomposition of poly-<em>n</em>-butylcyanoacrylate in presence of sodium hydroxide is proposed.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 10","pages":"Pages 1939-1944"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0032-3950(91)90091-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91746298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kinetic features of radical polymerization occurring with auto-acceleration 自由基聚合自加速发生的动力学特征
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90318-K
V.A. Ivanov, V.A. Kaninskii, Ye.B. Brun, B.A. Korolev, M.B. Lachinov
{"title":"Kinetic features of radical polymerization occurring with auto-acceleration","authors":"V.A. Ivanov,&nbsp;V.A. Kaninskii,&nbsp;Ye.B. Brun,&nbsp;B.A. Korolev,&nbsp;M.B. Lachinov","doi":"10.1016/0032-3950(91)90318-K","DOIUrl":"10.1016/0032-3950(91)90318-K","url":null,"abstract":"<div><p>Within the framework of modern ideas on the dynamic properties of polymer solutions a theoretical analysis is made of the kinetic anomalies of radical polymerization at the auto-acceleration stage. The manifestation of these features is related to the dependence of the diffusion-controlled constant of bimolecular termination on conversion and the length of the terminated chains exceeding the critical size of the scale of the entanglements. Polymerization of the monomers of the alkylmethacrylate series is taken to look at the influence of a number of factors (concentration of initiator and transfer agent and the nature of the monomer) on the character of the manifestation of the gel effect and it is shown that fall in the termination constant results from reduction in the free volume of the reaction systems and the topological restrictions of the “network of entanglements”. Increase in the length of the alkyl radical of the monomers of the series studied diminishes the role of the topological restrictions in the termination reaction which leads to decline in the gel effect.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 7","pages":"Pages 1336-1347"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0032-3950(91)90318-K","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87323622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Study of polyorganocarbosilanes based on calculation of the volume increments 基于体积增量计算的多有机碳硅烷的研究
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90170-U
V.M. Polikarpov, Ye.V. Matukhina, Yu.P. Polyakov, P.M. Matveichev, N.V. Ushakov, N.B. Bespalova, I.V. Razumovskaya, Ye.M. Antipov
{"title":"Study of polyorganocarbosilanes based on calculation of the volume increments","authors":"V.M. Polikarpov,&nbsp;Ye.V. Matukhina,&nbsp;Yu.P. Polyakov,&nbsp;P.M. Matveichev,&nbsp;N.V. Ushakov,&nbsp;N.B. Bespalova,&nbsp;I.V. Razumovskaya,&nbsp;Ye.M. Antipov","doi":"10.1016/0032-3950(91)90170-U","DOIUrl":"10.1016/0032-3950(91)90170-U","url":null,"abstract":"<div><p>Characteristic parameters of some polyorganocarbosilanes have been determined and compared by means of the calculation of volume increments, and also by experimental methods based on X-ray structural analysis, thermomechanical analysis and DSC. It is shown that the volume increments method may be used to calculate the packing coefficients, melting points, <em>T</em><sub>g</sub> and the <em>T</em><sub>g</sub>/<em>T</em><sub>melt</sub> ratios for these polymers. The results of experimental determinations of the studied parameters show that the calculations are highly accurate, and that the properties of the polymers may be predicted from their structural formulae.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 5","pages":"Pages 1001-1005"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0032-3950(91)90170-U","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86345787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interpolymeric complexes of poly-N-vinylamides with polycarboxylic acids in solvents of varied nature 聚n -乙烯酰胺与聚羧酸在不同性质溶剂中的聚合配合物
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90212-9
Ye.V. Anufriyeva, M.R. Ramazanova, M.G. Krakovyak, V.B. Lushchik, T.N. Nekrasova, T.V. Sheveleva
{"title":"Interpolymeric complexes of poly-N-vinylamides with polycarboxylic acids in solvents of varied nature","authors":"Ye.V. Anufriyeva,&nbsp;M.R. Ramazanova,&nbsp;M.G. Krakovyak,&nbsp;V.B. Lushchik,&nbsp;T.N. Nekrasova,&nbsp;T.V. Sheveleva","doi":"10.1016/0032-3950(91)90212-9","DOIUrl":"10.1016/0032-3950(91)90212-9","url":null,"abstract":"<div><p>Study of the intramolecular mobility of interacting polymer chains by polarized luminescence has established the patterns of the structural changes of the interpolymeric poly-<em>N</em>-vinylamide-polycarboxylic acid complexes on passing from water to organic solvents (DMF, <em>N</em>-methylpyrrolidone, methanol) for poly-<em>N</em>-vinylamides of varied chemical structure. It is shown that on passing from water to organic solvents the tertiary structure of the interpolymeric complexes is completely destroyed, the two-stranded structure persists in the non-amide solvent-methanol-and is destroyed in the amide solvents completely (in <em>N</em>-methylpyrrolidone) or partially (in DMF). It was found that for all the poly-<em>N</em>-vinylamides studied on interaction with polymethacrylic and polyacrylic acids interpolymeric complexes of the molecular type form in water and methanol and an interpolymeric complex of the supramolecular type in DMF in the systems poly-<em>N</em>-vinylcaprolactam-polyacrylic acid and poly-<em>N</em>-vinylcaprolactam-polymethacrylic acid.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 6","pages":"Pages 1091-1096"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0032-3950(91)90212-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90534838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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