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1. Interfacial electrostatics of poly(vinylamine hydrochloride), poly(diallyldimethylammonium chloride), poly- l -lysine, and poly- l -arginine interacting with lipid bilayers

   https://doi.org/10.1039/C7CP07353D  

   McGeachy, A. C.; Dalchand, N.; Caudill, E. R.; Li, T.; Doğangün, M.; Olenick, L. L.; Chang, H.; Pedersen, J. A.; Geiger, F. M. (January 2018, Physical Chemistry Chemical Physics)

   Charge densities of cationic polymers adsorbed to lipid bilayers are estimated from second harmonic generation (SHG) spectroscopy and quartz crystal microbalance with dissipation monitoring (QCM-D) measurements. The systems surveyed included poly(vinylamine hydrochloride) (PVAm), poly(diallyldimethylammonium chloride) (PDADMAC), poly- l -lysine (PLL), and poly- l -arginine (PLR), as well as polyalcohol controls. Upon accounting for the number of positive charges associated with each polyelectrolyte, the binding constants and apparent free energies of adsorption as estimated from SHG data are comparable despite differences in molecular masses and molecular structure, with Δ G ads values of −61 ± 2, −58 ± 2, −57 ± 1, −52 ± 2, −52 ± 1 kJ mol −1 for PDADMAC 400 , PDADMAC 100 , PVAm, PLL, and PLR, respectively. Moreover, we find charge densities for polymer adlayers of approximately 0.3 C m −2 for poly(diallyldimethylammonium chloride) while those of poly(vinylamine) hydrochloride, poly- l -lysine, and poly- l -arginine are approximately 0.2 C m −2 . Time-dependent studies indicate that polycation adsorption to supported lipid bilayers is only partially reversible for most of the polymers explored. Poly(diallyldimethylammonium chloride) does not demonstrate reversible binding even over long timescales (>8 hours). 

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2. Insight on the Sequential Vapor Infiltration Mechanisms of Trimethylaluminum with Poly(methyl methacrylate), Poly(vinylpyrrolidone), and Poly(acrylic acid)

   https://doi.org/10.1021/acs.jpcc.9b02153  

   Hill, Grant T.; Lee, Dennis T.; Williams, Philip S.; Needham, Craig D.; Dandley, Erinn C.; Oldham, Christopher J.; Parsons, Gregory N. (May 2019, The Journal of Physical Chemistry C)
3. Hydration sphere structure of architectural molecules: poly-ethylene glycol and poly-oxymethylene oligomers

   Rozza, Ahmed M.; Vanpoucke, Danny E.P.; Krammer, Eva-Maria; Bouckaert, Julie; Blossey, Ralf; Lensink, Mark F.; Ondrechen, Mary Jo; Bakó, Imre; Oláh, Julianna; Roos, Goedele (August 2023, Journal of molecular liquids)

   Non-toxic, chemically inert, organic polymers as polyethylene glycol (PEG) and polyoxymethylene (POM) have versatile applications in basic research, industry and pharmacy. In this work, we aim to characterize the hydration structure of PEG and POM oligomers by exploring how the solute disturbs the water structure compared to the bulk solvent and how the solute chain interacts with the solvent. We explore the effect of (i) the C–C–O (PEG) versus C-O (POM) constitution of the chain and (ii) chain length. To this end, MD simulations followed by clustering and topological analysis of the hydration network, as well as quantum mechanical calculations of atomic charges are used. We show that the hydration varies with chain conformation and length. The degree of folding of the chain impacts its degree of solvation, which is measurable by different parameters as for example the number of water molecules in the first solvation shell and the solvent accessible surface. Atomic charges calculated on the oligomers in gas phase are stable throughout conformation and chain length and seem not to determine solvation. Hydration however induces charge transfer from the solute molecule to the solvent, which depends on the degree of hydration. 

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4. Blends of Poly(butylene glutarate) and Poly(lactic acid) with Enhanced Ductility and Composting Performance

   https://doi.org/10.1021/acsapm.1c00078  

   Holt, Apisata; Ke, Yutian; Bramhall, Jessica A.; Crane, Grant; Grubbs, Joe B.; White, Evan M.; Horn, Jessica; Locklin, Jason (March 2021, ACS Applied Polymer Materials)

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5. Unexpected conformational behavior of poly(poly(ethylene glycol) methacrylate)-poly(propylene carbonate)-poly(poly(ethylene glycol) methacrylate) (PPEGMA-PPC-PPEGMA) amphiphilic block copolymers in micellar solution and at the air-water interface

   https://doi.org/10.1016/j.jcis.2020.01.080  

   Lee, Jaewon; Pan, Jingyi; Chun, Jaehun; Won, You-Yeon (April 2020, Journal of Colloid and Interface Science)