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Polymer Science U.s.s.r.最新文献

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Physicochemical properties and morphology of poly-p-xylylene film surfaces 聚对二甲苯薄膜表面的物理化学性质和形态
Polymer Science U.s.s.r. Pub Date : 1991-01-01 DOI: 10.1016/0032-3950(91)90330-S
K. Mailyan, A. V. Pebalk, Y. Mishina, I. Kardash
{"title":"Physicochemical properties and morphology of poly-p-xylylene film surfaces","authors":"K. Mailyan, A. V. Pebalk, Y. Mishina, I. Kardash","doi":"10.1016/0032-3950(91)90330-S","DOIUrl":"https://doi.org/10.1016/0032-3950(91)90330-S","url":null,"abstract":"","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"25 1","pages":"1420-1426"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82437175","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
Structure of intumescent char formed by pyrolysis and burning of polymers containing intumescent fire retardants 含膨胀阻燃剂的聚合物热解燃烧后形成的膨胀焦的结构
Polymer Science U.s.s.r. Pub Date : 1991-01-01 DOI: 10.1016/0032-3950(91)90335-N
Ye.V. Gnedin, N. Kozlova, R. Gitina, O. N. Fedoseyeva, M. Sevost’yanov, S. Novikov
{"title":"Structure of intumescent char formed by pyrolysis and burning of polymers containing intumescent fire retardants","authors":"Ye.V. Gnedin, N. Kozlova, R. Gitina, O. N. Fedoseyeva, M. Sevost’yanov, S. Novikov","doi":"10.1016/0032-3950(91)90335-N","DOIUrl":"https://doi.org/10.1016/0032-3950(91)90335-N","url":null,"abstract":"","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"23 1","pages":"1458-1466"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82182872","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 properties of network segmented polyester urethanes 网段聚酯聚氨酯的性能研究
Polymer Science U.s.s.r. Pub Date : 1991-01-01 DOI: 10.1016/0032-3950(91)90244-K
N. P. Apukhtina, I. V. Dal’gren, N.Ye. Lukina, T. A. Yagfarova, A. Gubaidullin, B. Teitel'baum
{"title":"On the properties of network segmented polyester urethanes","authors":"N. P. Apukhtina, I. V. Dal’gren, N.Ye. Lukina, T. A. Yagfarova, A. Gubaidullin, B. Teitel'baum","doi":"10.1016/0032-3950(91)90244-K","DOIUrl":"https://doi.org/10.1016/0032-3950(91)90244-K","url":null,"abstract":"","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"145 1","pages":"458-466"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75857670","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
Separation by dynamic light scattering of internal motion in polymer coils from brownian motion 聚合物线圈内部运动与布朗运动的动态光散射分离
Polymer Science U.s.s.r. Pub Date : 1991-01-01 DOI: 10.1016/0032-3950(91)90265-R
N. Griko, A. Timchenko, A. Kipper, I. Baranovskaya, S. Lyubina, S. I. Klenin, I. Serdyuk
{"title":"Separation by dynamic light scattering of internal motion in polymer coils from brownian motion","authors":"N. Griko, A. Timchenko, A. Kipper, I. Baranovskaya, S. Lyubina, S. I. Klenin, I. Serdyuk","doi":"10.1016/0032-3950(91)90265-R","DOIUrl":"https://doi.org/10.1016/0032-3950(91)90265-R","url":null,"abstract":"","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"34 1","pages":"603-609"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85660751","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 model of radical-chain degradation of a system of loaded polymer chains of different length 不同长度负载聚合物链体系自由基链降解动力学模型
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90017-K
M.G. Zaitsev, S.A. Stremyakov
{"title":"Kinetic model of radical-chain degradation of a system of loaded polymer chains of different length","authors":"M.G. Zaitsev,&nbsp;S.A. Stremyakov","doi":"10.1016/0032-3950(91)90017-K","DOIUrl":"10.1016/0032-3950(91)90017-K","url":null,"abstract":"<div><p>Kinetic equations for radical-chain degradation as applied to a model of chains of different length simulating a loaded amorphous layer of an oriented polymer are recorded in the narrow degradation front approximation. A method for their numerical analysis on a computer has been developed and the durability is calculated for different values of the length variations of the communicating chains. For values of the kinetic constants corresponding to PE, allowance for free radical reactions leads only to an insignificant decrease in the effective activation energy of the degradation process <em>U</em><sub>0</sub> from 0.5 <em>D</em><sub>1</sub> to 0.44 <em>D</em><sub>1</sub> (where <em>D</em><sub>1</sub> is the dissociation energy of the C—C bond in the macromolecule).</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 9","pages":"Pages 1808-1815"},"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)90017-K","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75634385","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
Kinetics of curing of a mixture of aromatic and aliphatic epoxide oligomers-diethylenetriamine and strength-strain properties of networks based on them 芳香族和脂肪族环氧化合物低聚物-二乙烯三胺混合物的固化动力学及基于它们的网络的强度-应变特性
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90301-6
M.A. Markevich
{"title":"Kinetics of curing of a mixture of aromatic and aliphatic epoxide oligomers-diethylenetriamine and strength-strain properties of networks based on them","authors":"M.A. Markevich","doi":"10.1016/0032-3950(91)90301-6","DOIUrl":"10.1016/0032-3950(91)90301-6","url":null,"abstract":"<div><p>The kinetics of curing of mixtures of the epoxydiane (E-40) and the epoxyoligoether resin Oxiline-5, based on trimethylolpropane and epichlorohydrin under the action of diethylenetriamine are studied calorimetrically. Curing of the mixtures involves the reaction of epoxide with primary and secondary amines (at temperatures up to 80°C), as far as complete decomposition of the functional groups, which are in short supply, and obeys a second order equation. The epoxypolyester resin is somewhat less active than the epoxydiane resin. The thermal effect of the epoxide-amine reaction is equal to 131 kJ/mole. The Young's modulus and rupture strength of the cross-linked polymers are decreased, and the elongation at break increases with increases in the quantity of epoxyologoether resin in the compositions at a stoichiometric ratio of the functional groups. The value of <em>T</em><sub>g</sub> for the cured compositions is decreased from +92 to −5°C when the quantity of Oxiline-5 resin is increased from 0 to 100%; moreover, <em>M</em><sub>c</sub> increases from 650–700 to 1100–1200. The maximum values of the strain-strength properties of the cured 50:50 compositions are obtained at a stoichiometric ratio of the functional groups.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 12","pages":"Pages 2468-2477"},"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)90301-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80685522","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
Orientational-deformational nature of flow birefringence in solutions of worm-like chains 蠕虫状链溶液中流动双折射的定向-变形性质
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90021-H
N.V. Pogodina
{"title":"Orientational-deformational nature of flow birefringence in solutions of worm-like chains","authors":"N.V. Pogodina","doi":"10.1016/0032-3950(91)90021-H","DOIUrl":"10.1016/0032-3950(91)90021-H","url":null,"abstract":"<div><p>It has been confirmed experimentally that dynamic birefringence in solution worm-like chains is orientation-deformational in nature. It is shown that it is possible to determine the coefficient of internal viscosity of a worm-like chain directly from the way in which the relaxation time depends on the solvent's viscosity and that it is displayed indirectly in the relaxation time in the way in which the model coefficient depends on the degree of chain convolution.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 9","pages":"Pages 1838-1847"},"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)90021-H","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86216642","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
Physicochemical properties and morphology of poly-p-xylylene film surfaces 聚对二甲苯薄膜表面的物理化学性质和形态
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90330-S
K.A Mailyan, A.V Pebalk, Ye.I Mishina, I.Ye Kardash
{"title":"Physicochemical properties and morphology of poly-p-xylylene film surfaces","authors":"K.A Mailyan,&nbsp;A.V Pebalk,&nbsp;Ye.I Mishina,&nbsp;I.Ye Kardash","doi":"10.1016/0032-3950(91)90330-S","DOIUrl":"https://doi.org/10.1016/0032-3950(91)90330-S","url":null,"abstract":"<div><p>The physicomechanical properties of poly-<em>p</em>-xyleylene films obtained from the gas phase by pyrolytic polymerization of cyclodi-<em>p</em>-xylyene are studied. The effect of the process parameters (sublimation and polymerization temperatures) on the strain-strength properties of poly-<em>p</em>-xyleylene films are established: the tensile stress is changed over the range 25–62 MPa, relative breaking elongation within 18–330%, and Young's modulus within 0.6–1.4 GPa. Excellent mechanical properties are obtained at polymerization temperatures of 0–30°C and at the sublimation temperature of cyclo-di-<em>p</em>-xylylene 120–140°C. Over the range 5–10°C an abrupt change in the breaking elongation is observed. The effect of the process parameters of pyrolytic polymerization on the surface morphology of the poly-<em>p</em>-xylylene films obtained is studied by electron and optical microscopy.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 7","pages":"Pages 1420-1426"},"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)90330-S","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91740820","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 role of the hyperbaric phase in the formation of crystals with extended chains in polyethylene under high pressure 高压相在高压下聚乙烯长链晶体形成中的作用
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90336-O
A.I Shul'gin, V.A Aulov
{"title":"On the role of the hyperbaric phase in the formation of crystals with extended chains in polyethylene under high pressure","authors":"A.I Shul'gin,&nbsp;V.A Aulov","doi":"10.1016/0032-3950(91)90336-O","DOIUrl":"https://doi.org/10.1016/0032-3950(91)90336-O","url":null,"abstract":"<div><p>In this work, phase diagrams are examined of linear polyethylene (PE) of various molecular mass (MM), as obtained by the DTA method under high pressure. The formation of crystals with extended chains at various pressures is studied. The relation between the formation of crystals with extended chains and the existence of the hyperbaric phase under high pressure is discussed.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 7","pages":"Pages 1466-1473"},"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)90336-O","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91740813","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
Aspects of the degradation of polystyrene on its intensive reprocessing in blends with polyethylene 聚苯乙烯在与聚乙烯共混物中密集再加工的降解方面
Polymer Science U.s.s.r. Pub Date : 1991-01-01 Epub Date: 2003-06-11 DOI: 10.1016/0032-3950(91)90187-U
N.N. Komova, O.N. Boiko, G.Ye. Zaikov, S.V. Portnenko
{"title":"Aspects of the degradation of polystyrene on its intensive reprocessing in blends with polyethylene","authors":"N.N. Komova,&nbsp;O.N. Boiko,&nbsp;G.Ye. Zaikov,&nbsp;S.V. Portnenko","doi":"10.1016/0032-3950(91)90187-U","DOIUrl":"10.1016/0032-3950(91)90187-U","url":null,"abstract":"<div><p>Change in the mean viscous MM of polystyrene when processed on a disc extruder in a mixture with PE of varied composition has been studied. The results are analysed with reference to the rheological properties of PE-PS blends and the character of the process of degradation of PS in similar conditions. Change in the MM depends on the processing regimes and the composition of the blend. In certain regimes and ratios of components increase in the MM on processing PS with PE is possible.</p></div>","PeriodicalId":20280,"journal":{"name":"Polymer Science U.s.s.r.","volume":"33 2","pages":"Pages 247-252"},"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)90187-U","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86724161","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
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