Development Of Polymer Science Research Articles

Thermomechanical and mechanical properties of biocidal materials based on polyhexamethylene guanidine hydrochloride and polyvinyl alcohol

During the development of polymer science, attention has been attracted to different research areas. The current focus on polymer mixtures is due to their practical significance. Studying the physical and mechanical properties of polymer mixtures has led to a revision of existing basic concepts, the emergence of new research directions and the solution of practical problems. From this point of view, polymer mixtures are similar to copolymerization in achieving specific properties by combining different chemical structures. The use of polymer mixtures allows materials with the desired properties to be obtained at a faster rate than the synthesis of high-molecular compounds. In recent years, numerous studies have been published on the interaction of various polymers, particularly water-soluble and naturally occurring polymers that are safe for humans and the environment. The development of such materials is of great interest due to their high adhesive strength. These materials can be used to obtain polymer films with new valuable properties. This work investigates the potential of improving the thermomechanical and mechanical properties of films for use in construction as polymer biocidal additives by modifying polyhexamethylene guanidine hydrochloride with polyvinyl alcohol. Films based on a polymer-polymer mixture of polyhexamethylene guanidine hydrochloride and polyvinyl alcohol were used as a research object.

Polymers and rheology: A tale of give and take

Polymers and rheology were both born in the twenties of the last century, fruit of the disruptive and creative scientific atmosphere of this decade. The development of polymer science and technology in the last almost 100 years has been colossal, whereas rheology has been able to create its own route as a branch of Physics. In this review paper we describe the interactions between both scientific areas, demonstrating that many of the crucial aspects for the progress of one of them owes to contribution of the other and viceversa. This interrelationship is shown through a historical survey of the principal milestones, starting from the correlation of the molecular weight with the intrinsic viscosity. A pondered analysis of the contributions of rheology to polymer science and technology, lead us to assert that the role of the former is rather founded on 50 years old discoveries.

Nucleic Acid‐Backboned Chimeric Polymers with Designable Physics and Chemistry

Comprehensive SummaryThe chain effect of polymer is the kernel of the precise synthesis of complex polymer compounds and the development of polymer science. Nucleic acids, a special type of polyester, can form supramolecular polymers via hydrogen bonds among corresponding bases. We focused on the precise control of polymer chains and proposed the concept of “nucleic acid‐backboned chimeric polymers” (NCPs). There are three important elements of NCPs, namely nucleic acid backbone, side group and intra‐/inter‐chain weak interactions. In this review, we expound how to realize the construction of intelligent DNA structures through the regulation of these three elements and the applications of NCPs in various fields. What is the most favorite and original chemistry developed in your research group?Nucleic acid‐backboned chimeric polymers, frame guided assembly and kinetically interlocking multiple‐units (KIMU) strategy.How do you get into this specific field? Could you please share some experiences with our readers?I was always interested in how life is organized from molecules since my college time. During my PhD, I started to realize the important roles of the natural polymers and their essential feature in chain effect. When I set up my own research group in 2005, I focused on the investigation in nucleic acid‐backboned chimeric polymers, which provide an optimal model for the study of precise controllable polymer synthesis, assembly and functions, benefiting the understanding of the life science.What is the most important personality for scientific research?Thinking deeply and working hard.How do you keep balance between research and family?I am always working hard when I work, but I always remind myself to enjoy my family and spare time.What are your favorite journals?Nature, Science, Journal of the American Chemical Society, Angewandte Chemie International Edition, and Advanced Materials.What are your hobbies?Travel; cooking.

A Mini Review on Polymers and their Applications

This review presents a comprehensive overview of the recent advancements and developments in polymer science and technology. The structure and classifications of polymers are discussed, highlighting their unique properties and potential for tailoring specific applications. New polymeric technologies in medical applications, including as implantation of various body parts, have grown in popularity in recent years. This review paper discusses many types of polymers and their use in various fields. Polymers have an essential function in medicine and medication delivery. Polysaccharides have also been used to target medications to the colon following oral delivery. Moulds are the type of polymers which are used by dentists during the procedure. Polymeric semiconductor like Polypyrrole (PPy), polyaniline, and polydopamine which show remarkable applications in the field of electronics. Purification of water and elimination of harmful elements found in industrial water effluent is accomplished by the use of polymer membranes.

Advances in the application of named reactions in polymer synthesis

With the development of polymer science, more and more named reactions have been applied to synthesizing polymers. Introducing new reactions into polymer synthesis is undoubtedly an excellent expansion for monomer and polymer libraries. In this review, the named reactions employed in polymer-chain synthesis were divided into seven types: electrophilic reactions, nucleophilic reactions, transition metal-mediated cross-coupling reactions, free radical reactions, pericyclic reactions, multi-component reactions and rearrangement reactions. The discussion was mainly focused on the progress in the utilization of these named reactions in polymer synthesis, which could be a valuable reference for researchers in the polymer field.

РАЗВИТИЕ НАУКИ О ПОЛИМЕРАХ В 1950-1970 ГОДЫ: РОЛЬ МЕЖДУНАРОДНЫХ СВЯЗЕЙ УЧЕНЫХ-ХИМИКОВ

The article is based on archival materials and is devoted to the contribution of scientists and specialists of the Scientific Research Physics and Chemical Institute named after L.Ya. Karpov, first of all, of scientific schools headed by Academicians S.S. Medvedev and V.A. Kargin, in the development of polymer science. The author draws attention to the role of international relations of scientists in the development of physical and chemical science in general, the chemistry of high molecular compounds in particular. Special attention is paid to the work of the laboratory under the leadership of Academician V.A. Kargin, his international activities. The author also focuses on the activities of the State Committee of the Council of Ministers of the USSR for Chemistry on the implementation of international contacts between scientists of the USSR and researchers of the member countries of the Council of Mutual Economic Assistance, Western countries, the USA, etc.

Unique Slow Crack Growth Behavior of Isotactic Polypropylene: The Role of Shear Layer-Spherulites Layer Alternated Structure.

With the development of polymer science, more attention is being paid to the longevity of polymer products. Slow crack growth (SCG), one of the most important factors that reveal the service life of the products, has been investigated widely in the past decades. Here, we manufactured an isotactic polypropylene (iPP) sample with a novel shear layer–spherulites layer alternated structure using multiflow vibration injection molding (MFVIM). However, the effect of the alternated structure on the SCG behavior has never been reported before. Surprisingly, the results showed that the resistivity of polymer to SCG can be enhanced remarkably due to the special alternated structure. Moreover, this sample shows unique slow crack propagation behavior in contrast to the sample with the same thickness of shear layer, presenting multiple microcracks in the spherulites layer, which can explain the reason of the resistivity improvement of polymer to SCG.

Terminology of polymers in advanced lithography (IUPAC Recommendations 2020)

Abstract As increasingly smaller molecular materials and material structures are devised or developed for technological applications, the demands on the processes of lithography now routinely include feature sizes that are of the order of 10 nm. In reaching such a fine level of resolution, the methods of lithography have increased markedly in sophistication and brought into play 2terminology that is unfamiliar, on the one hand, to scientists tasked with the development of new lithographic materials or, on the other, to the engineers who design and operate the complex equipment that is required in modern-day processing. Publications produced by scientists need to be understood by engineers and vice versa, and these commonly arise from collaborative research that draws heavily on the terminology of two or more of the traditional disciplines. It is developments in polymer science and material science that lead progress in areas that cross traditional boundaries, such as microlithography. This document provides the exact definitions of a selection of unfamiliar terms that researchers and practitioners from different disciplines might encounter.

Radicals and Polymers.

This article describes some selected results of my 30 years as an industrial researcher. During this time, I had the chance to work on many very different projects. About two thirds of them were dealing with the fascinating interaction of radicals and polymers. Of the more than 350 million tons of industrial polymers produced worldwide every year, about 50% are made by the radical polymerization of monomers that are often stabilized against undesired premature polymerization by addition of polymerization inhibitors. Stabilizers are necessary to protect the majority of polymeric materials during their service life from radical degradation processes triggered by oxygen, heat or light. Modification of the polymeric architecture can be easily achieved via radical polymer analogous reactions. One of the most important developments in polymer science in the last 25 years is controlled radical polymerization. Recently, radical bearing redox-active polymers emerged as promising in energy storage applications, for example, in organic radical batteries. Our contributions to the fields mentioned above are described with examples of: a) novel benzofuranone stabilizers for polymers; b) the serendipidous discovery of novel dyestuffs; c) eco-friendly polymerization inhibitors; d) novel nitroxides and alkoxyamines for the first industrial realization of controlled radical polymerization; e) novel and safe radical initiators; f) nitroxide radicals bearing polymers for electrochemical applications.

Recent Developments in the Fabrication, Characterization, and Properties Enhancement of Polymer Nanocomposites: A Critical Review

During the last few decades, significant progress in developing polymer nano-composites and their wide scope in extensive engineering applications such as packaging, sports equipment, automobile sector and bio-medical, has been the result of continuous developments in polymer science and nanotechnology. Moreover, the polymer nano-composites can be tailored to meet the widespread engineering accomplishments due to unique combination of mechanical properties, electrical properties, corrosion resistance, thermal stability and high reliability in rigorous environments. The present research study significantly reviews the various theories and models used to fabricate the polymer nano-composites. Furthermore, the paper also emphasizes the impact of nanofillers dispersion on morphology, thermal, water barrier, flame retardant and mechanical properties of nanocomposites. Earlier research unveils that addition of different nano-particle, for instance, carbon nanotubes, nanofibers, layered silicate clays and metallic nanoparticles into thermosetting or thermoplastic polymers acquire high surface area to volume ratio of the spherical nanofiller and high aspect ratio which results in properties enrichment. Therefore, this analysis would discover several key research gaps and to discuss the future scope for the synthesis of advanced polymer nanocomposites with tunable mechanical, thermal and electrical properties.

Polymeric Materials for Printed-Based Electroanalytical (Bio)Applications

Advances in design of selective interfaces and printed technology have mighty contributed to the expansion of the electroanalysis fame. The real advantage in electroanalytical field is the possibility to manufacture and customize plenty of different sensing platforms, thus avoiding expensive equipment, hiring skilled personnel, and expending economic effort. Growing developments in polymer science have led to further improvements in electroanalytical methods such as sensitivity, selectivity, reproducibility, and accuracy. This review provides an overview of the technical procedures that are used in order to establish polymer effectiveness in printed-based electroanalytical methods. Particular emphasis is placed on the development of electronalytical sensors and biosensors, which highlights the diverse role of the polymeric materials depending on their specific application. A wide overview is provided, taking into account the most significant findings that have been reported from 2010 to 2017.

New Editorial Structure for the Macromolecular Journals

New Editorial Structure for the Macromolecular Journals

Happy birthday, Rolf Mülhaupt!

Happy birthday, Rolf Mülhaupt!

New Editorial Structure for the Macromolecular Journals

New Editorial Structure for the Macromolecular Journals

New Editorial Structure for the Macromolecular Journals

New Editorial Structure for the Macromolecular Journals

Nanotechnology in Therapeutics – Current Technologies and Applications

Nanotechnology is an area of science devoted to the design, construction and utilization of functional structures on the nanometer scale (often 100nm or smaller). Therapeutic applications of nanotechnologies include the treatment of cancer liver diseases. Avoiding the recognition by the liver is also possible by developing long circulating polymeric colloidal carriers (“stealth” systems) able to avoid the opsonisation process and the recognition by the macrophages. The design of such carriers is based on the physico-chemical concept of the “steric repulsion” by grafting polyethylene glycol chains at the surface of nanoparticles, the adsorption of steric proteins may be dramatically reduced due to steric hindrance. Such an approach allows maintaining the drug carrier for a longer time into the circulation and the resulting extravasation towards non reticuloendothelial-located cancers may become possible. Now, new applications and exciting perspectives are proposed for the delivery of drugs to previously non-accessible diseased sanctuaries, like the brain (treatment of glioma and autoimmune diseases of the brain) or the ocular tissues (treatment of the autoimmune uveitis). Ocular autoimmunity is especially intriguing because of the unique immunological characteristics of the eye. On the basis of laboratory data, the feeding of ocular antigens, has been proposed as a safe and efficacious therapy for uveitis. This review highlights how these obstacles can be overcome by polymer science and nanotechnology. New developments in polymer science coupled with cell-based delivery strategies support the notion that diseases that now have limited therapeutic options can show improved outcomes by advances in nanomedicine. Keywords: Nanomedicine, cancer therapy, dendrimers, neurodegenerative disorders, osteoporosis

On Some Future Developments in Polymer Science

On Some Future Developments in Polymer Science

A Growing Family …

A Growing Family …

A Growing Family …

A Growing Family …

A Growing Family …

A Growing Family …