Preparation of Porous Biodegradable Polymer and Its Nanocomposites by Supercritical CO2Foaming for Tissue Engineering

Using supercritical carbon dioxide (scCO2) as an alternative to conventional methods in the preparation of porous biodegradable polymer and polymer/nanocomposites for tissue engineering has attracted increasing interest in recent years due to the absence of using organic solvents and the ability to incorporate thermosensitive biologicals without loss of bioactivity. Additionally, scCO2can exert a high level of control over porosity and morphology of scaffolds by tuning the processing parameters. This paper describes the newly achievements on the preparation of porous polymer materials using scCO2foaming technology with focus on the porous biodegradable materials and its nanocomposites relevant to tissue engineering.

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Possibilities of using biodegradable polymeric materials in the agricultural sector

Elektrotekhnologii i elektrooborudovanie v APK ◽

10.22314/2658-4859-2020-67-2-115-120 ◽

2020 ◽

Vol 67 (2) ◽

pp. 115-120

Author(s):

Raisa A. Alekhina ◽

Victoriya E. Slavkina ◽

Yuliya A. Lopatina

Keyword(s):

Mechanical Properties ◽

Biodegradable Polymers ◽

Biodegradable Polymer ◽

Agricultural Sector ◽

Polymeric Materials ◽

Polymer Materials ◽

Limiting Factors ◽

Research Purpose ◽

Biodegradable Materials ◽

Advantages And Disadvantages

The article presents options for recycling polymers. The use of biodegradable materials is promising. This is a special class of polymers that can decompose under aerobic or anaerobic conditions under the action of microorganisms or enzymes forming natural products such as carbon dioxide, nitrogen, water, biomass, and inorganic salts. (Research purpose) The research purpose is in reviewing biodegradable materials that can be used for the manufacture of products used in agriculture. (Materials and methods) The study are based on open information sources containing information about biodegradable materials. Research methods are collecting, studying and comparative analysis of information. (Results and discussion) The article presents the advantages and disadvantages of biodegradable materials, mechanical properties of the main groups of biodegradable polymers. The article provides a summary list of agricultural products that can be made from biodegradable polymer materials. It was found that products from the general group are widely used in agriculture. Authors have found that products from a special group can only be made from biodegradable polymers with a controlled decomposition period in the soil, their use contributes to increasing the productivity of crops. (Conclusions) It was found that biodegradable polymer materials, along with environmental safety, have mechanical properties that allow them producing products that do not carry significant loads during operation. We have shown that the creation of responsible products (machine parts) from biodegradable polymers requires an increase in their strength properties, which is achievable by creating composites based on them. It was found that the technological complexity of their manufacture and high cost are the limiting factors for the widespread use of biodegradable polymers at this stage.

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Tissue Engineering Researches on Biodegradable Polymer Nanocomposites: Designing Concepts, Properties, and Perspectives

Biodegradable Polymeric Nanocomposites ◽

10.1201/b19314-10 ◽

2015 ◽

pp. 122-151 ◽

Cited By ~ 1

Keyword(s):

Tissue Engineering ◽

Polymer Nanocomposites ◽

Biodegradable Polymer

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Biodegradable polymer nanocomposites for tissue engineering: synthetic strategies and related applications

Materials for Biomedical Engineering ◽

10.1016/b978-0-12-818415-8.00006-1 ◽

2019 ◽

pp. 157-198

Author(s):

Marco Laurenti ◽

Valentina Cauda

Keyword(s):

Tissue Engineering ◽

Polymer Nanocomposites ◽

Biodegradable Polymer

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Biodegradable polymer nanocomposites for ligament/tendon tissue engineering

Journal of Nanobiotechnology ◽

10.1186/s12951-019-0556-1 ◽

2020 ◽

Vol 18 (1) ◽

Cited By ~ 1

Author(s):

Magda Silva ◽

Fernando N. Ferreira ◽

Natália M. Alves ◽

Maria C. Paiva

Keyword(s):

Tissue Engineering ◽

Polymer Nanocomposites ◽

Biodegradable Polymer ◽

Tendon Tissue ◽

Tendon Tissue Engineering

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Engineered Nanocomposites for Capturing and Converting Carbon Dioxide into Useful Chemicals

MRS Proceedings ◽

10.1557/opl.2012.1188 ◽

2012 ◽

Vol 1441 ◽

Author(s):

Michael Ashley ◽

Punnamchandar Ramidi ◽

Timothy Bontrager ◽

Charles Magiera ◽

Anindya Ghosh ◽

...

Keyword(s):

Carbon Dioxide ◽

Metal Oxide ◽

Metal Oxide Nanoparticles ◽

Ruthenium Oxide ◽

Porous Polymer ◽

Polymer Materials ◽

Oxide Nanoparticles ◽

Material System ◽

Catalytic Function ◽

Catalytically Active

ABSTRACTWe describe a simple drop-cast processing method to synthesize multicomponent polymer-based nanocomposites for carbon dioxide (CO2) capture and conversion into stable carbonates. These multicomponent nanocomposites are made of combination of different metal oxide nanoparticles and catalysts in a porous polymer matrix. The formulation includes the combination of titanium dioxide and magnesium oxide, ruthenium oxide, and iron oxide where each metal oxide exhibits its own catalytic function of trapping carbon dioxide. Such a material system provides numerous localized catalytically active hot reaction spots generated by the dispersed multifunctional oxide nanoparticles that react with CO2 when exposed to the gas stream and instantaneously convert the captured carbon into carbonates. Finally, we discuss our ongoing work on the possibility of converting captured-carbon-formed-carbonate into useful products/commodities such as methane, methanol and formic acid. The integration of polymer materials with catalytically active nanomaterials shows a promising strategy for CO2 capture and conversion into useful products towards achieving a sustainable energy future.

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