The article discusses the preparation of some thermodynamic parameters characterizing
the final product of complex radical polymerization of amino alkyl acrylate derivatives
containing both methacrylate and alkyl groups of low molecular weight compounds with
electron acceptors - polymerization initiators at temperatures that exclude thermal
decomposition of the initiators themselves. The equilibrium constant of the complication reaction
and the molar extinction coefficient of the complex were determined by graphically solving the
Bеneshe-Hildebrand equation, the heats of complex formation, entropy, Gibbs energy were
found, and the elemental composition of low molecular weight and high molecular weight
substances was determined. As can be seen from the studies, the molar extinction coefficient of
the complex practically does not depend on temperature, and the equilibrium constant of the
complexation reaction even in a narrow temperature range (283–293 K) increases with
increasing temperature. The structure and composition of the synthesized monomeric and
polymer salt were also considered in the work, and confirmed by IR-spectroscopy and analysis
of elemental composition, the obtained spectroscopic data showed that the unit of the formed
polymer corresponds in composition and structure to the monomeric quaternary salt, and the
allyl bond in the polymers is preserved. It can be seen from the studies that, with an increase in
the concentration of both the monomer and the initiator, the reaction rate naturally increases.
Maqolada kompleks-radikal polimerlanishning aminoalkilakrilat hosilali yakuniy maxsulotini
ba'zi bir termodinamik parametrlari ko'rilmoqda, bir vaqtning o'zida metakrilat va allil
guruhlari tutgan quyi molekulyar birikmalar bilan elektron akceptorlari - iniciiatorlarni termik
parchalanishini istisno etgan holda. Formulaning reakciya kompleksining muvozanat sobitligi
va molyar ekstinkciya koeffitcienti Beneshi-Xildebrand tenglamasini grafik usulida, murakkab
shakllanish, entropiya, Gibbs energiyasi qoldiqlari va kuyi molekulyar massali va yuqori
molekulyar massadagi moddalarning elementar tarkibi aniqlandi. Tadqiqotlardan ko'rinib
turibdiki, kompleksning molyar ekstinkciya koefficienti deyarli haroratga bog’liq emas,
haroratning kichik oralig’ida ham (283-293 K) kompleks hosil bo'lish reakciyasining muvozanat
doimiyligi harorat oshishi bilan ortib boradi. Sintez qilingan monomer va polimer tuzining
tuzilishi va tarkibi IQ-spektroskopiya va element tahlil tarkibi bilan tasdiqlangan, olingan
spektroskopik ma'lumotlar shuni ko'rsatdiki, hosil bo'lgan polimerning tarkibi va tuzilishi
monomerdagi to'rtlamchi tuziga to'g’ri keladi va polimerlarda allil birikma saqlanib qoladi.
Tadqiqotlardan ko'rinib turibdiki, monomerning ham, iniciatorning ham koncentraciyasi oshishi
bilan reakciya tezligi tabiiy ravishda oshadi.
The article discusses the preparation of some thermodynamic parameters characterizing
the final product of complex radical polymerization of amino alkyl acrylate derivatives
containing both methacrylate and alkyl groups of low molecular weight compounds with
electron acceptors - polymerization initiators at temperatures that exclude thermal
decomposition of the initiators themselves. The equilibrium constant of the complication reaction
and the molar extinction coefficient of the complex were determined by graphically solving the
Bеneshe-Hildebrand equation, the heats of complex formation, entropy, Gibbs energy were
found, and the elemental composition of low molecular weight and high molecular weight
substances was determined. As can be seen from the studies, the molar extinction coefficient of
the complex practically does not depend on temperature, and the equilibrium constant of the
complexation reaction even in a narrow temperature range (283–293 K) increases with
increasing temperature. The structure and composition of the synthesized monomeric and
polymer salt were also considered in the work, and confirmed by IR-spectroscopy and analysis
of elemental composition, the obtained spectroscopic data showed that the unit of the formed
polymer corresponds in composition and structure to the monomeric quaternary salt, and the
allyl bond in the polymers is preserved. It can be seen from the studies that, with an increase in
the concentration of both the monomer and the initiator, the reaction rate naturally increases.
В статье рассматривается получение некоторых термодинамических параметров,
характеризующих конечный продукт комплексно-радикальной полимеризации
производных аминоалкилакрилатов, содержащих одновременно метакрилатные и
аллильные группы низкомолекулярных соединений с акцепторами электронов –
инициаторами полимеризации при температурах, исключающих термический распад
самих инициаторов. Были определены константа равновесия реакции
комплексообразования и коэффициент молярной экстинкции комплекса путем
графического решения уравнения Бенеши-Хильдебранда, найдена теплота образования
комплекса, энтропия, энергия Гиббса, также определен элементный состав
низкомолекулярных и высокомолекулярных веществ. Как видно из исследований,
коэффициент молярной экстинкции комплекса практически не зависит от температуры,
а константа равновесия реакции комплексообразования даже в узком температурном
интервале (283-293К) растет с повышением температуры. Также в работе
рассмотрены строение и состав синтезированной мономерной и полимерной соли, что
подтверждено методами ИК-спектроскопии и анализом элементного состава,
полученные данные спектроскопических исследований показали, что звено образующегося
полимера по составу и структуре соответствует мономерной четвертичной соли, а
аллильная связь в полимерах сохраняется. Из проведенных исследований видно, что с
повышением концентрации как мономера, так и инициатора скорость реакции
закономерно возрастает.
| № | Author name | position | Name of organisation |
|---|---|---|---|
| 1 | Abdukakhkharova M.N. | talaba | TDTU |
| 2 | Ismailov A.I. | dotsent | TDTU |
| 3 | Mirzaev U.M. | dotsent | TDTU |
| 4 | Ismailov R.I. | professor | TDTU |
| № | Name of reference |
|---|---|
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