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Evaluation of the Interaction Parameter for Poly(solketal methacrylate)-block-polystyrene Copolymers

Yu, Duk Man; Mapas, Jose Kenneth D.; Kim, Hyeyoung; Choi, Jaewon; Ribbe, Alexander E.; Rzayev, Javid; Russell, Thomas P.

Customer publications

Evaluation of the Interaction Parameter for Poly(solketal methacrylate)-block-polystyrene Copolymers

Yu, Duk Man; Mapas, Jose Kenneth D.; Kim, Hyeyoung; Choi, Jaewon; Ribbe, Alexander E.; Rzayev, Javid; Russell, Thomas P.

A series of symmetric poly(solketal methacrylate-b-styrene) (PSM-b-PS) copolymers with varying molecular weights that can transform a hydrophobic PSM block to a hydrophilic poly(glycerol monomethacrylate) (PGM) block through an acid hydrolysis were investigated. This simple chemical transformation significantly enhances the segmental interaction parameter (χ), enabling a phase-mixed block…
Characterization of cereal β-glucan extracts: Conformation and structural aspects

Zielke, Claudia; Stradner, Anna; Nilsson, Lars

Customer publications

Characterization of cereal β-glucan extracts: Conformation and structural aspects

Zielke, Claudia; Stradner, Anna; Nilsson, Lars

Several health benefits have been established for cereal mixed-linkage β-glucan of high molar mass (M), and are said to be attributed to the ability of β-glucan to form viscous slurries in the gut. As no comprehensive understanding exists yet, the characterization of β-glucan solution behavior is crucial. β-Glucan was characterized…
Designing Block Copolymer Architectures toward Tough Bioplastics from Natural Rosin

Rahman, Md Anisur; Lokupitiya, Hasala N.; Ganewatta, Mitra S.; Yuan, Liang; Stefik, Morgan; Tang, Chuanbing

Customer publications

Designing Block Copolymer Architectures toward Tough Bioplastics from Natural Rosin

Rahman, Md Anisur; Lokupitiya, Hasala N.; Ganewatta, Mitra S.; Yuan, Liang; Stefik, Morgan; Tang, Chuanbing

Resin acids (or natural rosin) are a class of abundant, renewable natural biomass. Most low molecular weight resin acid-containing polymers are very brittle due to their low chain entanglement associated with the pendant, intrinsically bulky hydrophenanthrene group. The use of block copolymer architectures can enhance chain entanglement and thus improve…
Morphological Behavior of A2B Block Copolymers in Thin Films

Kim, Hyeyoung; Kang, Beom-Goo; Choi, Jaewon; Sun, Zhiwei; Yu, Duk Man; Mays, Jimmy; Russell, Thomas P.

Customer publications

Morphological Behavior of A2B Block Copolymers in Thin Films

Kim, Hyeyoung; Kang, Beom-Goo; Choi, Jaewon; Sun, Zhiwei; Yu, Duk Man; Mays, Jimmy; Russell, Thomas P.

Copolymer composed of two poly(2-vinylpyridine) blocks and one polystyrene block ((P2VP)2–PS) with a PS volume fraction (ΦPS) of 0.44 was synthesized, and their morphologies in bulk and thin films were compared to linear block copolymers (BCPs) having a similar ΦPS (PS-b-P2VP). For the symmetric diblock copolymer, a lamellar morphology was…
Chiral Arrangements of Au Nanoparticles with Prescribed Handedness Templated by Helical Pores in Block Copolymer Films

Lu, Xuemin; Song, Dong-po; Ribbe, Alexander; Watkins, James J.

Customer publications

Chiral Arrangements of Au Nanoparticles with Prescribed Handedness Templated by Helical Pores in Block Copolymer Films

Lu, Xuemin; Song, Dong-po; Ribbe, Alexander; Watkins, James J.

Fabrication of films with plasmonic nanoparticles (NPs) arrays arranged in chiral configurations of prescribed handedness is highly attractive for the design of new functional materials; however, this remains a formidable challenge in nanotechnology. In this study, we demonstrated the controlled arrangements of gold (Au) NPs into helical structures templated by…
Characterization of Monoclonal Antibody–Protein Antigen Complexes Using Small-Angle Scattering and Molecular Modeling

Castellanos, Maria Monica; Snyder, James A.; Lee, Melody; Chakravarthy, Srinivas; Clark, Nicholas J.; McAuley, Arnold; Curtis, Joseph E.

Customer publications

Characterization of Monoclonal Antibody–Protein Antigen Complexes Using Small-Angle Scattering and Molecular Modeling

Castellanos, Maria Monica; Snyder, James A.; Lee, Melody; Chakravarthy, Srinivas; Clark, Nicholas J.; McAuley, Arnold; Curtis, Joseph E.

The determination of monoclonal antibody interactions with protein antigens in solution can lead to important insights guiding physical characterization and molecular engineering of therapeutic targets. We used small-angle scattering (SAS) combined with size-exclusion multi-angle light scattering high-performance liquid chromatography to obtain monodisperse samples with defined stoichiometry to…
Mesostructure of Mesoporous Silica/Anodic Alumina Hierarchical Membranes Tuned with Ethanol

Meoto, Silo; Kent, Niall; Nigra, Michael M.; Coppens, Marc-Olivier

Customer publications

Mesostructure of Mesoporous Silica/Anodic Alumina Hierarchical Membranes Tuned with Ethanol

Meoto, Silo; Kent, Niall; Nigra, Michael M.; Coppens, Marc-Olivier

Hierarchically structured membranes composed of mesoporous silica embedded inside the channels of anodic alumina (MS-AAM) were synthesized using the aspiration method. Ethanol is shown to have a significant effect on the type and organization of the mesoporous silica phase. Detailed textural analysis revealed that the pore size distribution of the…