Macromolecular mixed complexes of copper (II) with glycine and copolymer of acrylamide and sodium acrylate

Kudryavsky, D. L.; Fomina, E. K.; Butovskaya, G. V.; Grinyuk, E. V.; Tychinskaya, L. Yu.; Skakovsky, E. D.

doi:10.32864/polymmattech-2019-5-4-21-32

polymmattech

2019

DOI: 10.32864/polymmattech-2019-5-4-21-32

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Macromolecular mixed complexes of copper (II) with glycine and copolymer of acrylamide and sodium acrylate

D. L. Kudryavsky¹,

E. K. Fomina²,

G. V. Butovskaya³

et al.

Abstract: Makromolekulyarnye smeshannye kompleksy medi (II) s glitsinom i sopolimerom akrilamida i akrilata natriya [Macromolecular mixed complexes of copper (II) with glycine and copolymer of acrylamide and sodium acrylate].

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Swelling behavior of acrylamide and sodium acrylate copolymer hydrogel in aqueous solutions of copper (II) chloride with amino acids additives

Kudryavskii

Fomina

Krul

et al. 2020

Vescì Akademìì navuk Belarusì. Seryâ himičnyh navuk

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Белорусский государственный университет, Минск, Беларусь НАБУХАНИЕ ГИДРОГЕЛЯ НА ОСНОВЕ СОПОЛИМЕРА АКРИЛАМИДА И АКРИЛАТА НАТРИЯ В ВОДНЫХ РАСТВОРАХ ХЛОРИДА МЕДИ (II) С ДОБАВКАМИ АМИНОКИСЛОТ Аннотация. Изучено набухание полиэлектролитного гидрогеля на основе сополимера акриламида и акрилата натрия в водных растворах хлорида Cu(II) с добавками аминокислот глицина и L-гистидина. Актуальность исследований обусловлена применением таких систем в агрохимических препаратах, которые должны сохранять высокую водоудерживающую способность в присутствии ионов микроэлементов и аминокислот, используемых для устранения дефицита питания и придания растениям устойчивости к неблагоприятным погодным условиям и болезням. Использовали гравиметрический метод анализа, а также атомно-абсорбционную спектрометрию, Фурье-ИК НПВО спектроскопию и молекулярную абсорбционную спектрофотометрию. Определено влияние кислотности (рН 3, 5 и 7) водных растворов хлорида Cu(II) с добавками аминокислот на степень набухания гидрогеля и поглощение им ионов Cu(II). Установлены причины изменения степени набухания гидрогеля в водных растворах хлорида Cu(II) в присутствии глицина и L-гистидина. Высказано предположение, что основным продуктом взаимодействия сшитого сополимера с компонентами 0,01 М водного раствора хлорида Cu(II) с добавкой 0,04 M глицина или L-гистидина при рН 3 является смешанный комплекс ионов Cu(II) с функциональными группами сополимера и аминокислот. Ключевые слова: гидрогель, набухание, сополимер акриламида и акрилата натрия, ионы Cu(II), аминокислоты, макромолекулярные металлокомплексы, смешанные комплексы Для цитирования. Набухание гидрогеля на основе сополимера акриламида и акрилата натрия в водных растворах хлорида меди (II) с добавками аминокислот / Д. Л. Кудрявский [и др.] // Вес. Нац. акад. навук Беларусi. Сер. хiм. навук.-2020.-Т. 56, № 3.-С. 339-351.

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Swelling behavior of acrylamide and sodium acrylate copolymer hydrogel in aqueous solutions of copper (II) chloride with amino acids additives

Kudryavskii

Fomina

Krul

et al. 2020

Vescì Akademìì navuk Belarusì. Seryâ himičnyh navuk

Self Cite

View full text Add to dashboard Cite

show abstract

NMR spectroscopy of Cu(II) complexes with acrylamide and sodium acrylate copolymer and ω-amino acids

Кудрявский¹,

Fomina²,

Тычинская³

et al. 2021

Journal of the Belarusian State University. Chemistry

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Macromolecular complexes of acrylamide and sodium acrylate copolymer with microelements, including Cu(II), may form at preparation of crop protection and stimulation compositions, where the copolymer serves as an adhesive, water-retaining and film-forming agent. Preparations for crop production may also contain amino acids that protect plants under stressful conditions (cold, dry, etc.). Carboxylic groups of copolymer, carboxylic and amino groups of amino acids may be involved in mixed Cu(II) ions complexes formation. Number of methylene groups separating carboxylic and amino group of amino acids affects its ability to form a stable chelate cycle and, therefore, ligand composition of mixed Cu(II) ions complexes with acrylamide and sodium acrylate copolymer and amino acid. This work is aimed at determining the ligand composition of mixed macromolecular Cu(II) ion complexes with acrylamide and sodium acrylate copolymer and ω-amino acids (β-alanine, γ-aminobutyric acid, ε-aminocaproic acid). 13C and 1H NMR spectroscopy was used to clarify complexes composition. A complex where carboxylic groups of amino acids are ligands has been found to form in aqueous solutions of Cu(II) ions and ω-amino acid (β-alanine, γ-aminobutyric acid, ε-aminocaproic acid) at molar ratio of Cu(II) ions – amino acid equal to 1 : 6. A chelate complex where both carboxylic and amino groups of β-alanine are involved in coordination has been discovered to form in the solution containing Cu(II) ions, β-alanine, as well as acrylamide and sodium acrylate copolymer at molar ratio of Cu(II) – β-alanine – copolymer COO− equal to 1 : 6 : 30. Carboxylic groups of copolymer participate in complex formation as well. Carboxylic groups of both amino acids and the copolymer have been shown to participate in complex formation in aqueous solutions containing Cu(II) ions, either γ-aminobutyric or ε-aminokaproic acid and also acrylamide and sodium acrylate copolymer.

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Macromolecular mixed complexes of copper (II) with glycine and copolymer of acrylamide and sodium acrylate

Abstract: Makromolekulyarnye smeshannye kompleksy medi (II) s glitsinom i sopolimerom akrilamida i akrilata natriya [Macromolecular mixed complexes of copper (II) with glycine and copolymer of acrylamide and sodium acrylate].

Cited by 2 publications

References 0 publications

Swelling behavior of acrylamide and sodium acrylate copolymer hydrogel in aqueous solutions of copper (II) chloride with amino acids additives

Swelling behavior of acrylamide and sodium acrylate copolymer hydrogel in aqueous solutions of copper (II) chloride with amino acids additives

NMR spectroscopy of Cu(II) complexes with acrylamide and sodium acrylate copolymer and ω-amino acids

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