Browsing Chemistry by Author "Gauthier, Mario"
Now showing items 1-12 of 12
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Application of Pyrene Fluorescence to the Characterization of Hydrophobically Modified Starch Nanoparticles
Kim, Damin; Amos, Ryan; Gauthier, Mario; Duhamel, Jean (American Chemical Society, 2018-06-25)Several aspects of pyrene fluorescence were applied to gain an insight into the nature of the microdomains in hydrophobically modified starch nanoparticles (HM-SNPs), prepared by reacting SNPs with propionic and hexanoic ... -
Arborescent Poly(L-glutamic acid)s as Standards to Study the Dense Interior of Polypeptide Mesoglobules by Pyrene Excimer Fluorescence
Hall, Timothy; Whitton, Greg; Casier, Remi; Gauthier, Mario; Duhamel, Jean (American Chemical Society, 2018-10-01)A series of arborescent poly(l-glutamic acid)s of generations 0 to 3 (PGA(GY) with Y = 0–3) were randomly labeled with 1-pyrenemethylamine to yield several Py-PGA(GY) constructs with pyrene contents ranging between 2.5 and ... -
Asymmetric soft-hard colloidal mixtures: osmotic effects, glassy states and rheology
Merola, Maria Consiglia; Parisi, Daniele; Truzzolillo, Domenico; Vlassopoulos, Dimitris; Deepak, Vishnu D.; Gauthier, Mario (American Institute of Physics, 2017-09-06)Whereas mixtures of colloids and non-adsorbing polymers have been studied in great detail in the last two decades, binary colloidal mixtures have not received much attention. Yet, fragmental evidence from asymmetric mixtures ... -
Depletion gels from dense soft colloids: Rheology and thermoreversible melting
Truzzolillo, Domenico; Vlassopoulos, Dimitris; Munam, Abdul; Gauthier, Mario (American Institute of Physics, 2014-08-01)Upon addition of small nonadsorbing linear polymers, colloidal glasses composed of large hard spheres melt and eventually revitrify into the so-called attractive glass regime. We show that, when replacing the hard spheres ... -
Glassy States in Asymmetric Mixtures of Soft and Hard Colloids
Truzzolillo, Domenico; Marzi, Daniela; Marakis, John; Capone, Barbara; Camargo, Manuel; Munam, Abdul; Moingeon, Firmin; Gauthier, Mario; Likos, Christos N.; Vlassopoulos, Dimitris (APS Physics, 2013-11-14)By employing rheological experiments, mode coupling theory, and computer simulations based on realistic coarse-grained models, we investigate the effects of small, hard colloids on the glassy states formed by large, soft ... -
Monomolecular films of arborescent polystyrene− graft −poly(2-vinylpyridine) copolymers: Precursors to nanostructured carbon materials
Huh, Mongyoung; Gauthier, Mario; Il Yun, Seok (Elsevier, 2017-08-23)An arborescent polystyrene (PS)−graft−poly(2-vinylpyridine) (P2VP) copolymer of overall generation number G2, consisting of side chains with Mn ∼5000, served as template for the preparation of nanostructured carbon films. ... -
pH-Responsive Poly(Ethylene Glycol)- block -Polylactide Micelles for Tumor-Targeted Drug Delivery
Xiao, Lin; Huang, Lixia; Moingeon, Firmin; Gauthier, Mario; Yang, Guang (American Chemical Society, 2017-08-16)A biodegradable micellar drug delivery system with a pH-responsive sheddable PEG shell was developed using an acetal-linked poly(ethylene glycol)-block-polylactide (PEG-a-PLA) copolymer and applied to the tumoral release ... -
Poly(Lactic Acid)-Based Biomaterials: Synthesis, Modification and Applications
Xiao, Lin; Wang, Bo; Yang, Guang; Gauthier, Mario (InTech, 2012-01-20)Chapter 11 entitled "Poly(Lactic Acid)-Based Biomaterials: Synthesis, Modification and Applications" from: "Biomedical Science, Engineering and Technology", book edited by Dhanjoo N. Ghista, ISBN 978-953-307-471-9, Published: ... -
Porous chitosan microspheres as microcarriers for 3D cell culture
Huang, Lixia; Xiao, Lin; Jung Poudel, Abishek; Li, Jixiang; Zhou, Ping; Gauthier, Mario; Liu, Haiqing; Wu, Zhihong; Yang, Guang (Elsevier, 2018-12-15)Highly porous chitosan microspheres (CSM) were prepared through emulsion-based thermally induced phase separation (TIPS) without using toxic crosslinkers and chemical porogenic agents other than ice. The CSM had an average ... -
Synthesis of carboxylated derivatives of poly(isobutylene-co-isoprene) by azide–alkyne “click” chemistry
Deepak, Vishnu D.; Mahmud, Ilias; Gauthier, Mario (Springer, 2018-09-28)The synthesis of carboxylated derivatives of poly(isobutylene-co-isoprene) (isobutylene–isoprene rubber, IIR) with substitution levels ranging from 1 to 4 mol% and different spacer lengths was accomplished through azide–alkyne ... -
Templated Synthesis of Magnetic Nanoparticles through the Self-Assembly of Polymers and Surfactants
Nguyen, Vo Thu An; Gauthier, Mario; Sandre, Olivier (Multidisciplinary Digital Publishing Institute, 2014-08-04)The synthesis of superparamagnetic nanoparticles (NPs) for various technological applications continues to be an interesting research topic. The successful application of superparamagnetic NPs to each specific area typically ... -
Using Pyrene Excimer Fluorescence To Probe Polymer Diffusion in Latex Films
Casier, Remi; Gauthier, Mario; Duhamel, Jean (American Chemical Society, 2017-02-28)This study introduces a simple technique that can be used to quantitatively probe interparticle polymer diffusion (IPD) between adjacent particles in a latex film using pyrene excimer fluorescence (PEF). To demonstrate the ...