H 43 Heat pulse monitoring of curing and polymer-gas systems [Text] / V. P. Skripov, S. E. Puchinscics, V. P. Begishev, A. I. Lipchak, P. A. Pavlov // Journal of Applied Polymer Science. - 1994. - V. 51, N 9. - P1607-1619 Рубрики: ФИЗИКА Кл.слова (ненормированные): ТЕРМООБРАБОТКА СИСТЕМ -- СИСТЕМЫ ПОЛИМЕР-ГАЗ -- ПОЛИМЕР-ГАЗ (СИСТЕМЫ) -- ИМПУЛЬСЫ ТЕПЛОВЫЕ -- ТЕПЛОВЫЕ ИМПУЛЬСЫ -- ТЕПЛОФИЗИКА |
S 66 Skripov, V. P. Spontaneous boiling up as a specific relaxation process in polymer solvent systems [Text] / V. P. Skripov, S. E. Puchinscics // Journal of Applied Polymer Science. - 1996. - V. 59, №11. - P1659-1665 Рубрики: ФИЗИКА Кл.слова (ненормированные): КИПЕНИЕ СПОНТАННОЕ -- СПОНТАННОЕ КИПЕНИЕ -- ПРОЦЕСС СПЕЦИАЛЬНЫЙ -- СПЕЦИАЛЬНЫЙ ПРОЦЕСС -- ПРОЦЕСС ОСЛАБЛЕННЫЙ -- ОСЛАБЛЕННЫЙ ПРОЦЕСС -- СИСТЕМА ПОЛИМЕРНАЯ -- ПОЛИМЕРНАЯ СИСТЕМА -- СИСТЕМА РАСТВОРЯЮЩАЯСЯ -- РАСТВОРЯЮЩАЯСЯ СИСТЕМА Аннотация: The phenomenon of spontaneous bubble nucleation in extremely supersaturated (superheated) polymer–solvent systems has been studied experimentally. Spontaneous boiling-up temperatures T* for polystyrene and poly(ethylene glycol) solutions in a number of solvents have been measured at different values of pressure p and weight fraction of polymer c by the pulse heating method. The heating rate Ṫ varied from 105 to 107 K/s. For all systems studied, the values of T* have been found to increase with increasing p and c. The T*(p, c) dependence is discussed with the use of the data on the degree of compatibility of components. The peculiarities of polymeric solutions manifest themselves in the region c → 1, as follows: (i) an abrupt increase (by 1–2 orders of magnitude) in the slope of the T*(c) dependence, and (ii) the appearance of the dependence of T* values on the heating rate. Our approach to the interpretation of this result assumes a change in the initial composition of a solution in the course of heating due to polymer decomposition. An example of the extended phase diagram of a polymer–solvent system including the kinetic surface of T*(p, c) is given |
P 80 Polymer material laser destruction threshold studies [Текст] / V. P. Efremov, V. E. Privalov, P. V. Skripov, P. V. Charty, V. G. Shemanin // Proceedings of SPIE-The International Society for Optical Engineering. - 2005. - Vol. 5447: Lasers for Measurements and Information Transfer 2004. - С. 234-241 Рубрики: ФИЗИКА Кл.слова (ненормированные): POLYMER MATERIALS Аннотация: The polymer films are widely used in any industry as the construction materials with some specific properties. It demands the detail studies of the laser destruction threshold parameters of such a materials irradiated by the he power laser radiation pulse with energy density in range from 0 up to 200 J/cm2. The probability of the target laser ablation destruction versus the incident laser radiation energy density dependencies for any polymers -- the high pressure polyethylene, epoxy compound, polymethylmetacrylate, styrosil and rubber for comparing -- have been a subject of the experimental studies. The plots of the breakdown probability and plasma emission intensity for all of the samples versus energy density dependences have been got and the breakdown energy density for these targets have been determined by this probability is equal to 0,5 or zero plasma intensity condition. These results show that about 11% of absorbed laser pulse energy was transferred to the target as the shock wave spreading in it when the target thickness is greater than the distance which this shock wave spreads in the time of laser pulse action. ?? |
S 66 Skripov, P. V. Explosive Boiling of Polymer Liquids [] / P. V. Skripov, S. E. Puchinscics // High Temperature. - 1999. - V.37, N4. - С. 614-619 Рубрики: ФИЗИКА Кл.слова (ненормированные): BOILING EXPLOSIVE -- LIQUID POLYMER |
P 34 Pavlov, P. A. Vaporization in Polymer Liquids under Conditions of Rapid Heating [] / P. A. Pavlov, P. V. Skripov // High Temperature. - 1998. - V.36, N3. - С. 448-455 Рубрики: ФИЗИКА Кл.слова (ненормированные): VAPORIZATION -- LIQUID POLYMER -- HEATING RAPID -- POLYMER |
O-39 Okonishnokov, G. B. Solubility and Diffusion of Carbon Dioxide in Poly(methyl Methacrylate) [] / G. B. Okonishnokov, V. P. Skripov // Polymer Science. Series B. - 1973. - V.15, N12. - С. 890-893 Рубрики: ФИЗИКА Кл.слова (ненормированные): SOLUBILITY OF CARBON DIOXIDE -- DIFFUSION OF CARBON DIOXIDE -- CARBON DIOXIDE -- POLY (METHYL METHACRYLATE) |
B 65 Blednykh, Ye. I. Thermodynamic and Structural Conditions of Bubbles Nucleation in Gas-Saturated Polymethyl Methacrylate [] / Ye. I. Blednykh, V. P. Skripov // Polymer Science. Series B. - 1992. - V.34, N9. - С. 61-65 Рубрики: ФИЗИКА Кл.слова (ненормированные): THERMODYNAMIC CONDITIONS OF NUCLEATION -- STRUCTURAL CONDITIONS OF NUCLEATION -- NUCLEATION BUBBLES -- POLYMETHYL METHACRYLATE GAS-SATURATED -- NUCLEATION HOMOGENEOUS -- CARBON DIOXIDE -- LIMIT GAS-POLYMER |
S 66 Skripov, P. V. Molecular Mass Dependence of the Spontaneous Boiling Temperature of Polymer Solutions [] / P. V. Skripov, S. E. Puchinscics, A. A. Starostin // Polymer Science. Series A and B. - 1996. - V.38, N11. - С. 1881-1887 Рубрики: ФИЗИКА Кл.слова (ненормированные): MASS MOLECULAR -- TEMPERATURE SPONTANEOUS BOILING -- SOLUTIONS POLYMER |
S 66 Skripov, P. V. Superheat and Spontaneous Boiling of Polymer Solutions [] / P. V. Skripov, S. E. Puchinscics // Polymer Science. Series A. - 1995. - V.37, N2. - С. 283-290 Рубрики: ФИЗИКА Кл.слова (ненормированные): BOILING SPONTANEOUS -- BOILING SPONTANEOUS -- SOLUTION POLYMER -- DEPENDENCE OF TEMPERATURE |
A 53 An Experimental Investigation of Heat Transfer in Thermally Unstable Polymer Systems [] / D. V. Volosnikov, P. V. Efremov, A. A. Skripov, A. V. Starostin, A. V. Shishkin // Теплофизика высоких температур. - 2006. - V. 44, N 3. - С. 465-471: il., tabl. - Bibliogr.: p. 471 (18 ref.) . - ISSN 0040-3644 Рубрики: ФИЗИКА Кл.слова (ненормированные): UNSTABLE POLYMER SYSTEMS |
S 89 Vshivkov, S. A. Effect of molecular dimensions of components on phase transitions in solutions of oligomeric polyethers / S. A. Vshivkov, M. Z. Faizullin // Polymer Science. Series A. - 2009. - Vol.51, №9. - С. 974-978 Рубрики: ФИЗИКА Кл.слова (ненормированные): POLYMER-SOLVENT INTERACTION -- POLYSTYRENE -- REGION Аннотация: The molecular masses and intrinsic viscosities of a series of oligomeric poly(propylene glycols) have been studied by light scattering, analysis of chain ends, viscometry, and the cloud-point method. Phase diagrams are plotted and the Flory-Huggins thermodynamic interaction parameters and the second virial coefficients are calculated for oligomeric poly(propylene glycol)-n-alkane systems. The effects of the molecular dimensions of components on their mutual solubility and positions of boundary curves are determined. UCST decreases with an increase in the size of poly(propylene glycol) macromolecules and increases with an increase in the size of n-alkane mol |
N 64 Nikitin, E. D. Using the phenomenon of liquid superheat to measure critical properties of substances / E. D. Nikitin, A. P. Popov // Journal of Engineering Thermophysics. - 2007. - Vol.16, №3. - С. 200-204 Рубрики: ФИЗИКА Кл.слова (ненормированные): CRITICAL TEMPERATURES -- R1(CH2)nR2 Аннотация: A method to measure the critical temperature and critical pressure of substances, in particular, thermally unstable ones, is briefly described. The method is used to measure the temperature of attainable superheat of liquids with the help of a wire probe heated by electric current pulses. As the pressure increases, the temperature of attainable superheat tends to a critical temperature. The duration of the heating pulses is from 0.03 to 1 ms. A list of about 130 substances for which measurements of the critical properties were made is presented. The results of these measurements confirmed the scaling form of the relation between the critical constants of substances consisting of long chain molecules and the number of molecular units. Two methods to extrapolate the experimental data for the critical properties of the initial members of homologous series to heavier polymer homologs are proposed. One of the methods is based on the equation of state for the fluid of chain molecules. In this method, the extrapolating equations are power series in n, where n is the number of main units in a chain molecule. In the other method, the hypothesis of functional self-similarity and the presentation of scaling behavior of the critical constants of long chain molecules are used. Homologous series with the general formula R1 (CH2)nR2, where R1 and R2 are different end groups, are considered. We obtain equations to calculate, with good accuracy, the critical temperature and critical pressure of any member of any homologous series with the molecule structure R1(CH2)nR2 if they are known for one compound belonging to this series |
S 66 Skripov, P. V. Method of controlled pulse heating: applications for complex fluids and polymers [Electronic resource] / P. V. Skripov // NATO Science for Peace and Security Series A: Chemistry and Biology. - 2010. - P323-335 Рубрики: ФИЗИКА Кл.слова (ненормированные): PULSE-HEATING METHOD -- POLYMER MATERIALS |
H 43 Heat pulse monitoring of curing and polymer-gas systems [Text] / V. P. Skripov, S. E. Puchinscics, V. P. Begishev, A. I. Lipchak, P. A. Pavlov // Journal of Applied Polymer Science. - 1994. - V. 51, N 9. - P1607-1619 Рубрики: ФИЗИКА Кл.слова (ненормированные): ТЕРМООБРАБОТКА СИСТЕМ -- СИСТЕМЫ ПОЛИМЕР-ГАЗ -- ПОЛИМЕР-ГАЗ (СИСТЕМЫ) -- ИМПУЛЬСЫ ТЕПЛОВЫЕ -- ТЕПЛОВЫЕ ИМПУЛЬСЫ -- ТЕПЛОФИЗИКА |
S 66 Skripov, V. P. Spontaneous boiling up as a specific relaxation process in polymer solvent systems [Text] / V. P. Skripov, S. E. Puchinscics // Journal of Applied Polymer Science. - 1996. - V. 59, №11. - P1659-1665 Рубрики: ФИЗИКА Кл.слова (ненормированные): КИПЕНИЕ СПОНТАННОЕ -- СПОНТАННОЕ КИПЕНИЕ -- ПРОЦЕСС СПЕЦИАЛЬНЫЙ -- СПЕЦИАЛЬНЫЙ ПРОЦЕСС -- ПРОЦЕСС ОСЛАБЛЕННЫЙ -- ОСЛАБЛЕННЫЙ ПРОЦЕСС -- СИСТЕМА ПОЛИМЕРНАЯ -- ПОЛИМЕРНАЯ СИСТЕМА -- СИСТЕМА РАСТВОРЯЮЩАЯСЯ -- РАСТВОРЯЮЩАЯСЯ СИСТЕМА Аннотация: The phenomenon of spontaneous bubble nucleation in extremely supersaturated (superheated) polymer–solvent systems has been studied experimentally. Spontaneous boiling-up temperatures T* for polystyrene and poly(ethylene glycol) solutions in a number of solvents have been measured at different values of pressure p and weight fraction of polymer c by the pulse heating method. The heating rate Ṫ varied from 105 to 107 K/s. For all systems studied, the values of T* have been found to increase with increasing p and c. The T*(p, c) dependence is discussed with the use of the data on the degree of compatibility of components. The peculiarities of polymeric solutions manifest themselves in the region c → 1, as follows: (i) an abrupt increase (by 1–2 orders of magnitude) in the slope of the T*(c) dependence, and (ii) the appearance of the dependence of T* values on the heating rate. Our approach to the interpretation of this result assumes a change in the initial composition of a solution in the course of heating due to polymer decomposition. An example of the extended phase diagram of a polymer–solvent system including the kinetic surface of T*(p, c) is given |
P 80 Polymer material laser destruction threshold studies [Текст] / V. P. Efremov, V. E. Privalov, P. V. Skripov, P. V. Charty, V. G. Shemanin // Proceedings of SPIE-The International Society for Optical Engineering. - 2005. - Vol. 5447: Lasers for Measurements and Information Transfer 2004. - С. 234-241 Рубрики: ФИЗИКА Кл.слова (ненормированные): POLYMER MATERIALS Аннотация: The polymer films are widely used in any industry as the construction materials with some specific properties. It demands the detail studies of the laser destruction threshold parameters of such a materials irradiated by the he power laser radiation pulse with energy density in range from 0 up to 200 J/cm2. The probability of the target laser ablation destruction versus the incident laser radiation energy density dependencies for any polymers -- the high pressure polyethylene, epoxy compound, polymethylmetacrylate, styrosil and rubber for comparing -- have been a subject of the experimental studies. The plots of the breakdown probability and plasma emission intensity for all of the samples versus energy density dependences have been got and the breakdown energy density for these targets have been determined by this probability is equal to 0,5 or zero plasma intensity condition. These results show that about 11% of absorbed laser pulse energy was transferred to the target as the shock wave spreading in it when the target thickness is greater than the distance which this shock wave spreads in the time of laser pulse action. ?? |
S 66 Skripov, P. V. Explosive Boiling of Polymer Liquids [] / P. V. Skripov, S. E. Puchinscics // High Temperature. - 1999. - V.37, N4. - С. 614-619 Рубрики: ФИЗИКА Кл.слова (ненормированные): BOILING EXPLOSIVE -- LIQUID POLYMER |
P 34 Pavlov, P. A. Vaporization in Polymer Liquids under Conditions of Rapid Heating [] / P. A. Pavlov, P. V. Skripov // High Temperature. - 1998. - V.36, N3. - С. 448-455 Рубрики: ФИЗИКА Кл.слова (ненормированные): VAPORIZATION -- LIQUID POLYMER -- HEATING RAPID -- POLYMER |
O-39 Okonishnokov, G. B. Solubility and Diffusion of Carbon Dioxide in Poly(methyl Methacrylate) [] / G. B. Okonishnokov, V. P. Skripov // Polymer Science. Series B. - 1973. - V.15, N12. - С. 890-893 Рубрики: ФИЗИКА Кл.слова (ненормированные): SOLUBILITY OF CARBON DIOXIDE -- DIFFUSION OF CARBON DIOXIDE -- CARBON DIOXIDE -- POLY (METHYL METHACRYLATE) |
B 65 Blednykh, Ye. I. Thermodynamic and Structural Conditions of Bubbles Nucleation in Gas-Saturated Polymethyl Methacrylate [] / Ye. I. Blednykh, V. P. Skripov // Polymer Science. Series B. - 1992. - V.34, N9. - С. 61-65 Рубрики: ФИЗИКА Кл.слова (ненормированные): THERMODYNAMIC CONDITIONS OF NUCLEATION -- STRUCTURAL CONDITIONS OF NUCLEATION -- NUCLEATION BUBBLES -- POLYMETHYL METHACRYLATE GAS-SATURATED -- NUCLEATION HOMOGENEOUS -- CARBON DIOXIDE -- LIMIT GAS-POLYMER |