В первой части учебного пособия подробно и наглядно рассмотрены основные особенности решений уравнений в частных производных параболического типа, общие для курсов как диффузии, так и теплопроводности в твердых телах. Затем делается переход к собственно диффузионно-полимерной специфике. Что нового привносит диффузия именно в полимерах в физический смысл граничных условий? Какие эффекты можно ожидать от выраженной концентрационной зависимости коэффициента диффузии, типичной для полимерных материалов? Как внутренняя микропористая структура застеклованных полимеров может повлиять на сорбцию и десорбцию? Большое внимание в пособии также уделяется современным экспериментальным методам изучения диффузионных процессов.
In the first part of the textbook main features of solutions of parabolic-type partial differential equations are considered in a visual and detailed manner, which are general for courses of both diffusion and heat conduction in solids. Then there is a transition towards particular diffusion-in-polymers peculiarities. What new is introduced by the diffusion particularly in polymers into the physical meaning of boundary conditions? What effects are to be expected due to a distinct concentration dependence of the diffusion coefficient which is typical for polymeric materials? How an internal microporous structure of glassy polymers may affect both sorption and desorption? A significant attention is paid to modern experimental techniques for the study of diffusion processes.
V pervoy chasti uchebnogo posobiya podrobno i naglyadno rassmotreny osnovnye osobennosti resheniy uravneniy v chastnykh proizvodnykh parabolicheskogo tipa, obshchie dlya kursov kak diffuzii, tak i teploprovodnosti v tverdykh telakh. Zatem delaetsya perekhod k sobstvenno diffuzionno-polimernoy spetsifike. CHto novogo privnosit diffuziya imenno v polimerakh v fizicheskiy smysl granichnykh usloviy? Kakie effekty mozhno ozhidat ot vyrazhennoy kontsentratsionnoy zavisimosti koeffitsienta diffuzii, tipichnoy dlya polimernykh materialov? Kak vnutrennyaya mikroporistaya struktura zasteklovannykh polimerov mozhet povliyat na sorbtsiyu i desorbtsiyu? Bolshoe vnimanie v posobii takzhe udelyaetsya sovremennym eksperimentalnym metodam izucheniya diffuzionnykh protsessov. In the first part of the textbook main features of solutions of parabolic-type partial differential equations are considered in a visual and detailed manner, which are general for courses of both diffusion and heat conduction in solids. Then there is a transition towards particular diffusion-in-polymers peculiarities. What new is introduced by the diffusion particularly in polymers into the physical meaning of boundary conditions? What effects are to be expected due to a distinct concentration dependence of the diffusion coefficient which is typical for polymeric materials? How an internal microporous structure of glassy polymers may affect both sorption and desorption? A significant attention is paid to modern experimental techniques for the study of diffusion processes.
In the first part of the textbook in detail and clearly describes the main features of solutions of partial differential equations of parabolic type, common for courses like diffusion and heat conduction in solids. Then a transition is made to the actual diffusion-polymer specificity. What is contribution of diffusion in polymers in the physical sense of boundary conditions? What effects can you expect from a pronounced concentration dependence of the diffusion coefficient, typical for polymeric materials? As an internal microporous structure castelvania polymers can affect the sorption and desorption? A lot of attention in the allowance is also paid to modern experimental methods of studying diffusion processes.
In the first part of the textbook main features of solutions of parabolic-type partial differential equations are considered in a visual and detailed manner, which are general for courses of both diffusion and heat conduction in solids. Then there is a transition towards particular diffusion-in-polymers peculiarities. What new is introduced by the diffusion into polymers particularly in the physical meaning of boundary conditions? What effects are to be expected due to a distinct concentration dependence of the diffusion coefficient which is typical for polymeric materials? How an internal microporous structure of glassy polymers may affect both sorption and desorption? A significant attention is paid to modern experimental techniques for the study of diffusion processes.
