Formation in polyme

Ebook "From single molecules to nanoscopically structured materials" principle relied on the defined functionalization of macromolecules and macromolecular assemblies. The basic idea was to chemically encode the building blocks, permitting better control of structure formation. The placement of ionic or hydrogen-bonding groups into well-defined positions, the definition of amphiphilic “patches” and the creation of directed as well as non-directed interactions have led to novel aggregate topologies in solution as well as on surfaces.

293p tudohanhtau1006 29-03-2024 2 1   Download

Ebook "Polyelectrolyte complexes in the dispersed and solid state I: Principles and theory" is intended to extend the content of this former chapter by bringing together selected state-of-the-art contributions on principles and theory. Progress and new knowledge on theoretical aspects of electrosorption phenomena between PEL and oppositely charged surfaces and of the practically always apparent aggregation and clustering tendency of PEC particles are reviewed.

236p tudohanhtau1006 29-03-2024 6 1   Download

Ebook "Hydrogen bonded supramolecular structures" covers the advances in the studies of hydrogen-bonding-driven supramolecular systems made over the past decade. It is divided into four parts, with the first introducing the basics of hydrogen bonding and important hydrogen bonding patterns in solution as well as in the solid state. The second part covers molecular recognition and supramolecular structures driven by hydrogen bonding.

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In ebook "Metal catalysts in olefin polymerization" the most recent major breakthroughs in the development of new olefin polymerization catalysts, including early metal metallocene and non-metallocene complexes and late transition metal complexes, are discussed by leading experts. The authors highlight the most important discoveries in catalysts and their applications in designing new polyolefin-based functional materials.

260p coduathanh1122 27-03-2024 1 1   Download

Part 2 book "Chemical engineering of polymers - Production of functional and flexible materials" includes content: Study of temperature dependence of specific resistance of nickel tungsten coating on copper; topology of formation of latexes in heterogeneous static monomer water systems; synthesis and research of some phtalocyaninic dyes with Cu, Zn for testing in the systems of solar cells type; polymeric recording media based on carbazole containing copolymers and benzoxyphthalocyanines of transition metalsnment,... and other contents.

246p muasambanhan09 16-03-2024 1 1   Download

In ebook "Metal catalysts in olefin polymerization (Topics in organometallic chemistry, Volume 26)" the most recent major breakthroughs in the development of new olefin polymerization catalysts, including early metal metallocene and non-metallocene complexes and late transition metal complexes, are discussed by leading experts. The authors highlight the most important discoveries in catalysts and their applications in designing new polyolefin-based functional materials.

262p manmanthanhla0201 26-02-2024 2 1   Download

Ebook "Crystallization modalities in polymer melt processing: Fundamental aspects of structure formation" trial and error dominated. In fact, other apposite subjects as polymer melt rheology or heat transfer, had reached high levels. A great number of books has been devoted to them. Moldifilling of amorphous polymers and the solidification of these polymers by vitrification can nowadays be simulated numerically with a high degree of accuracy.

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Ebook "Enzyme stabilization and immobilization: Methods and protocols (Second edition)" introduces the reader to the field of enzyme stabilization and the different theories of enzyme stabilization, including the use of immobilization as a stabilization technique. The first part of the book focuses on protocols for enzyme stabilization in solutions including liposome formation, micelle introduction, crosslinking, and additives.

231p lucchinguyen 28-12-2023 6 3   Download

Ebook "Polymer colloids: Formation, characterization and applications" provide an update on mature topics and introduce new ones for the seasoned soft matter scientist. Part I of the book focuses on recent advances in polymer colloid formation including Dow Chemical’s Bluewave Technology and Flash NanoPrecipitation.

442p loivantrinh 29-10-2023 6 2   Download

Part 1 of ebook "Polymer microscopy" provides readers with contents including: Chapter 1 - Introduction to polymer morphology; Chapter 2 - Fundamentals of microscopy; Chapter 3 - Image formation in the microscope; Chapter 4 - Specimen preparation methods;...

259p loivantrinh 29-10-2023 6 3   Download

In this study, a new copolymer, which is a combination of two chemical structure (9,10-di(furan-2-yl)anthracene and 3,4-ethylenedioxythiophene was synthesized via electrochemical synthesis methods in the electrolyte medium of 0.1 M TBAPF6 / ACN solution. PEDOT homopolymer was also electrosynthesized for comparator experiments of the polymer formations in the same medium. The characterizations of polymers were achieved with general optical and electrochemical characterization techniques.

10p lyhuyenthu 31-01-2023 7 2   Download

The combination of four iso-nicotinate appended tetrathiacalix[4]arene (TCA-1) in 1,2-alternate imposed conformation behaving as neutral tectons with Co(II)Cl2 and Hg(II)Cl2 metallic salts, leads to the formation of neutral, new coordination networks. Indeed, the tetrasubstituted TCA-1 derivative leads to a 1D coordination polymer with Co(II)Cl2 and a 2D grid-like network with, Hg(II)Cl2 . The effect of the nature of the metal used on the dimensionality was demonstrated by X-ray diffraction studies on a single crystal.

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New ligand based on p-tertbutyltetrathiacalix[4]arene blocked in 1,3-alternate conformation, was achieved via a multistep synthesis with the introduction of thiomethylpropoxy groups on the lower rim which leads to a neutral tecton. The combination of this p-tertbutyltetrathiacalix[4]arene (p-TCA-2), in 1, 3-alternate imposed conformation, with tetrahedral Ag(I)SbF6 salt, leads to the formation of neutral, new 2-D coordination network, which was structurally investigated in the solid state by X-ray diffraction methods on a single crystal.

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Gellan gels were produced using different approaches forming structures with varied potential applications. Gels were characterized from appearance, mechanical properties, water holding capacity (WHC) and microstructure. In addition, in vitro digestibility of these gels was evaluated to understand the effect of gastrointestinal environment on their structure stability.

7p vihermione 06-01-2023 13 2   Download

Difficulties in the treatment of Candida spp. invasive infections are usually related to the formation of biofilms. The aim of this study was to determine the effects of molecular weight (MW) of chitosan (using high (HMW), medium (MMW) and low (LMW) molecular weight chitosan) on Candida albicans, Candida tropicalis and Candida parapsilosis sensu stricto.

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The aim of this study was to evaluate and characterize the interaction between fish gelatin (FG) and Gum Arabic (GA) and its effects in obtaining optimal atomization conditions. The technological properties of FG-GA shown high potential to be applied in the food industry as well in other industrial fields like chemical and pharmaceutical areas.

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Here, we synthesise a new isocyanate-based crosslinker with the aim of obtaining novel tailored gels. The newly crosslinked hyaluronic acid (HA) gels were analysed in terms of rheological properties, chemical structure, swelling, biocompatibility and immunological response.

10p viginny 30-12-2022 9 2   Download

In the present study, supramolecular polyelectrolyte complexes (SPEC) based on a cyclodextrin-grafted chitosan derivative and carrageenan were prepared and evaluated for controlled drug release. Samples were characterized by FTIR, SEM, and ζ-potential measurements, which confirmed the formation of the polymeric complex.

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Herein, environmentally benign chitin nanofiber (ChNF) membranes were fabricated by regulating suspension behavior. The introduction of zeolitic imidazole frameworks (ZIF-8) into the composite membranes led to the domain formation of ChNF derived by coordinative interaction, resulting in pore size-tunable membranes.

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With amphiphilic properties, cellulose molecules are expected to adsorb at the O/W interface and be capable of stabilizing emulsions. The effect of solvent quality on the formation and stability of cellulose-based O/W emulsions was evaluated in different alkaline systems: NaOH, NaOH-urea and tetrabutylammonium hydroxide (TBAH).

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