Pattern Transfer Using Alkanethiolate-Protected Templates:  A New Approach in Polymeric Materials Nanofabrication

Nano Letters ◽  
2001 ◽  
Vol 1 (6) ◽  
pp. 291-294 ◽  
Author(s):  
O. Azzaroni ◽  
P. L. Schilardi ◽  
R. C. Salvarezza
Keyword(s):  
Polymeric Materials ◽  
Pattern Transfer ◽  
New Approach

scholarly journals A new approach to the identification of high-potential materials for cost-efficient membrane-based post-combustion CO2capture

2018 ◽  
Vol 2 (6) ◽  
pp. 1225-1243 ◽  
Author(s):  
Simon Roussanaly ◽  
Rahul Anantharaman ◽  
Karl Lindqvist ◽  
Brede Hagen
Keyword(s):  
Polymeric Materials ◽  
High Potential ◽  
Cement Plant ◽  
Significant Cost ◽  
New Approach ◽  
Cost Reductions ◽  
Cost Efficient

Identification of polymeric materials with a high potential to achieve significant cost-reductions for membrane-based CO2capture from a cement plant.

scholarly journals An Overview of the Main Trends in the Creation of Biodegradable Polymer Materials

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Irina N. Vikhareva ◽  
Evgeniya A. Buylova ◽  
Gulnara U. Yarmuhametova ◽  
Guliya K. Aminova ◽  
Aliya K. Mazitova
Keyword(s):  
Raw Materials ◽  
Polymeric Materials ◽  
Polymer Materials ◽  
New Approach ◽  
Renewable Raw Materials ◽  
Biodegradable Composite ◽  
Operational Characteristics ◽  
Technical Solutions ◽  
Further Development ◽  
Degradation Time

Plastic is one of the most demanded materials on the planet, and the increasing consumption of which contributes to the accumulation of significant amounts of waste based on it. For this reason, a new approach to the development of these materials has been formed: the production of polymers with constant operational characteristics during the period of consumption and capable of then being destroyed under the influence of environmental factors and being involved in the metabolic processes of natural biosystems. The paper outlines the prerequisites for the development of the field of creating biodegradable composite materials, as well as the main technical solutions for obtaining such polymeric materials. The main current solutions for reducing and regulating the degradation time of polymer materials are presented. The most promising ways of further development of the field of bioplastics production are described. Common types of polymers based on renewable raw materials, composites with their use, and modified materials from natural and synthetic polymers are considered.

scholarly journals Ionic Liquids as Floatation Media for Cryo-Ultramicrotomy of Soft Polymeric Materials

2013 ◽  
Vol 19 (6) ◽  
pp. 1554-1557
Author(s):  
Paul Kim ◽  
Emeric David ◽  
Louis Raboin ◽  
Alexander E. Ribbe ◽  
Thomas P. Russell ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Ionic Liquids ◽  
Polymeric Materials ◽  
Solidification Temperature ◽  
Thin Sections ◽  
New Approach ◽  
Polymer Systems ◽  
Transmission Electron ◽  
Soft Polymer ◽  
Molecular Solvents

AbstractIonic liquids (ILs) and their mixtures with low molecular solvents present ideal properties for use as flotation liquids in cryo-ultramicrotomy. With control of Tg and η by co-solvent addition, flat, ultra-thin sections are reliably floated onto transmission electron microscopy grids even at temperatures as low as −100°C. Even more, the liquids and their mixtures are stable in the microtome trough for several hours because of low vapor pressure and low solidification temperature. Compared to established flotation media for soft polymer systems, the time and skill needed for cryo-ultramicrotomy are significantly reduced. Although just a handful of ILs are discussed and a good general choice identified, if different liquid characteristics are needed for a particular sample, thousands of additional ILs will perform similarly, giving this new approach enormous flexibility.

scholarly journals Biodegradable polymer materials and modifying additives: state of the art. Part I

2020 ◽  
Vol 12 (6) ◽  
pp. 320-325
Author(s):  
I.N. Vikhareva ◽  
I.I. Zaripov ◽  
D.F. Kinzyabulatova ◽  
N.S. Minigazimov ◽  
G.K. Aminova
Keyword(s):  
Biodegradable Polymers ◽  
Raw Materials ◽  
Optimal Solution ◽  
Polymeric Materials ◽  
Polymer Materials ◽  
New Approach ◽  
Factors Analysis ◽  
Current State ◽  
Production Capacities ◽  
Further Development

One of the most demanded materials on the planet is plastic, the excellent performance of which contributes to the accumulation of a significant amount of waste on its basis. In this regard, a new approach to the development of these materials has been formed in scientific circles: the production of polymer composites with constant performance characteristics for a certain period and then capable of destruction under the influence of environmental factors. Analysis of the current state of the industry of polymeric materials shows that the most urgent is the use of such classical polymers as polyolefins and polyvinyl chloride. First of all, the optimal solution to this problem due to the lack of a suitable replacement for traditional polymers is the development of composites based on them with the use of biodegradable additives. In this case, a set of problems associated with waste disposal is solved: the decomposition period of the recycled waste is significantly reduced, the territories required for plastic waste are reduced. The paper outlines the preconditions for the emergence and further development of the field of biodegradable polymers. The main quantitative characteristics of the production capacities of manufactured bioplastics by types, regions and industries of application are given. Modern methods of reducing and regulating the degradation time of polymer materials are presented. The main global and domestic manufacturers of biodegradable polymers and their products are listed, as well as a list of the main manufacturers of biodegradable additives for polymeric materials. Modern types of bioplastics based on renewable raw materials, composites with their use, as well as modified materials from natural and synthetic polymers are listed. The main methods for determining the biodegradability of existing bioplastics are described

A New Approach for Preparation of Modern Polymeric Materials Based on Polymer Glasses

1998 ◽  
Vol 40 (3-4) ◽  
pp. 161-175
Author(s):  
M. S. Arzhakov ◽  
S. A. Arzhakov ◽  
V. A. Chernavin
Keyword(s):  
Polymeric Materials ◽  
Polymer Glasses ◽  
New Approach

scholarly journals Transparent Ultraviolet (UV)-Shielding Films Made from Waste Hemp Hurd and Polyvinyl Alcohol (PVA)

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1190 ◽  
Author(s):  
Yi Zhang ◽  
Rechana Remadevi ◽  
Juan P. Hinestroza ◽  
Xungai Wang ◽  
Maryam Naebe
Keyword(s):  
Polyvinyl Alcohol ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Polymeric Materials ◽  
Vapor Permeability ◽  
New Approach ◽  
Chemical Treatments ◽  
Uv Shielding ◽  
Shielding Properties ◽  
Hemp Hurd

This work proposes a new approach to fabricate highly transparent and flexible composite films that exhibit enhanced UV-shielding properties. Lignin has innate UV-shielding properties. However, when purified lignin, which is conventionally extracted through chemical treatment, is mixed with polymeric materials, its presence negatively influences the transparency of the resulting composite. High transparency and UV-shielding are desirable properties for many applications. In this study, composites were made by mixing lignocellulose particles and polyvinyl alcohol (PVA), where lignocellulose particles were obtained from ball-milled waste hemp hurd without chemical treatments. The UV-shielding properties of the resulting composite film, as a function of hemp/PVA weight ratios, were investigated. The intermolecular interactions between the hemp particles and the PVA were characterized using infrared spectroscopy with the presence of –C=O group at 1655 cm−1, providing evidence that the chemical structure of lignin was preserved. The fabricated hemp/PVA films exhibit stronger UV-shielding, in the UVA-I range (340–400 nm) than TiO2/PVA films. The composite films also showed comparable water vapor permeability (WVP) with commercial packaging plastic film made of HDPE (high-density polyethylene). The optimization experiments were reported, with aim at understanding the balance between the UV-shielding and mechanical properties of the hemp/PVA films. The findings of this work can be applicable to the packaging, food and cosmetic industries where UV shielding is of utmost importance, hence adding value to hemp hurd waste.

scholarly journals Processability and Mechanical Properties of Thermoplastic Polylactide/Polyhydroxybutyrate (PLA/PHB) Bioblends

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 898
Author(s):  
Olga Olejnik ◽  
Anna Masek ◽  
Jakub Zawadziłło
Keyword(s):  
Mechanical Properties ◽  
Endocrine System ◽  
Polymeric Materials ◽  
Surface Characteristics ◽  
Extrusion Process ◽  
Test Results ◽  
Mass Ratio ◽  
New Approach ◽  
Packaging Industry ◽  
Processing Properties

This work considers the application of eco-friendly, biodegradable materials based on polylactide (PLA) and polyhydroxybutyrate (PHB), instead of conventional polymeric materials, in order to prevent further environmental endangerment by accumulation of synthetic petro-materials. This new approach to the topic is focused on analyzing the processing properties of blends without incorporating any additives that could have a harmful impact on human organisms, including the endocrine system. The main aim of the research was to find the best PLA/PHB ratio to obtain materials with desirable mechanical, processing and application properties. Therefore, two-component polymer blends were prepared by mixing different mass ratios of PLA and PHB (100/0, 50/10, 50/20, 40/30, 50/50, 30/40, 20/50, 10/50 and 0/100 mass ratio) using an extrusion process. The prepared blends were analyzed in terms of thermal and mechanical properties as well as miscibility and surface characteristics. Taking into account the test results, the PLA/PHB blend with a 50/10 ratio turned out to be most suitable in terms of mechanical and processing properties. This blend has the potential to become a bio-based and simultaneously biodegradable material safe for human health dedicated for the packaging industry.

A New Approach for Hydroxyapatite Coating on Polymeric Materials Using Laser-Induced Precursor Formation and Subsequent Aging

2009 ◽  
Vol 1 (7) ◽  
pp. 1520-1524 ◽  
Author(s):  
Baek-Hee Lee ◽  
Ayako Oyane ◽  
Hideo Tsurushima ◽  
Yoshiki Shimizu ◽  
Takeshi Sasaki ◽  
...  
Keyword(s):  
Polymeric Materials ◽  
Hydroxyapatite Coating ◽  
Subsequent Aging ◽  
New Approach
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