A Perspective on the Glass Transition and the Dynamics of Polyelectrolyte Multilayers and Complexes

Hongwei Li, Suvesh Manoj Lalwani, Chikaodinaka I. Eneh, Tamunoemi Braide, Piotr Batys, Maria Sammalkorpi, Jodie L. Lutkenhaus

Tutkimustuotos: LehtiartikkeliReview Articlevertaisarvioitu

2 Sitaatiot (Scopus)

Abstrakti

Polyelectrolyte multilayers (PEMs) or polyelectrolyte complexes (PECs), formed by layer-by-layer assembly or the mixing of oppositely charged polyelectrolytes (PEs) in aqueous solution, respectively, have potential applications in health, energy, and the environment. PEMs and PECs are very tunable because their structure and properties are influenced by factors such as pH, ionic strength, salt type, humidity, and temperature. Therefore, it is increasingly important to understand how these factors affect PECs and PEMs on a molecular level. In this Feature Article, we summarize our contributions to the field in the development of approaches to quantify the swelling, thermal properties, and dynamic mechanical properties of PEMs and PECs. First, the role of water as a plasticizer and in the glass-transition temperature (Tg) in both strong poly(diallyldimethylammonium)/poly(sodium 4-styrenesulfonate) (PDADMA/PSS) and weak poly(allylamine hydrochloride)/poly(acrylic acid) (PAH/PAA) systems is presented. Then, factors influencing the dynamics of PECs and PEMs are discussed. We also reflect on the swelling of PEMs in response to different salts and solvent additives. Last, the nature of water’s microenvironment in PEMs/PECs is discussed. A special emphasis is placed on experimental techniques, along with molecular simulations. Taken together, this review presents an outlook and offers recommendations for future research directions, such as studying the additional effects of hydrogen-bonding hydrophobic interactions.
AlkuperäiskieliEnglanti
Sivut14823-14839
Sivumäärä17
JulkaisuLangmuir
Vuosikerta39
Numero42
Varhainen verkossa julkaisun päivämäärä11 lokak. 2023
DOI - pysyväislinkit
TilaJulkaistu - 24 lokak. 2023
OKM-julkaisutyyppiA2 Katsausartikkeli tieteellisessä aikakauslehdessä

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