IAAM Scietific Medal Lecture: Natural rubbers current situation, challenges and opportunities for a sustainable world

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027022%3A_____%2F24%3AN0000073" target="_blank" >RIV/00027022:_____/24:N0000073 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

IAAM Scietific Medal Lecture: Natural rubbers current situation, challenges and opportunities for a sustainable world

Popis výsledku v původním jazyce

IAAM Scietific Medal Lecture Ancient Mesoamerican peoples were processing natural rubber (ND) and possessed functional equivalent to vulcanization by 1600 B.C. (1), which predated development of the vulcanization proces, first describes by natural rubber has remained one of the key and irreplaceable strategic materials in many industrial applications to this day. It is used in in countless products of critical importance in our day-to-day life, such as in the automotive sector and in the healthcare system. Polyisoprene of NR has extremely high density of C atoms in its molecule and during the NRL biosynthesis in the rubber tree Hevea brasiliensis (or other plant sources) significant amounts of carbon dioxide can be sequestered from atmosphere, especially in the case of massive use of natural rubber in construction/building industries. The pursuit of carbon neutrality creates the conditions for a renaissance of a number of technologies and products based on NR, that have been replaced by synthetic plastics and elastomers in the past (such as the gutta-percha industry in the British Empire in 19th century), and for development novel technologies and products based on NR. Our effort in the field of utilization of natural rubber led to the development of a new technology of vulcanization at laboratory temperature and to a functional sample of an unique 3D printer of natural rubber based on this technology. In this lecture, we will present our results in the field of development of new types of natural rubber composite latex foams and new technologies for their production. Two different methods of NR latex foam production - modified Dunlop and hydrodynamic cavitation have been developed in our laboratories. Toxic agents used for industrial production of NRL foams have been replaced with safe natural compounds. Different inorganic or natural fillers of the foams have been tested. The main application areas of the developed NR composite foams are advanced thermal and sound - traditional cotton fabric drenched in NR latex extracted from wild rubber trees (Hevea brasiliensis) in Amazonia, sold in fabric sheets to textile corporations and marketed as an alternative to leather. We have also developed new kind of scaffolds for tissue engineering produced from NR latex with experimentally verified biocompatibility proved by successful colonization with adipose derived stem cells. Natural rubber belongs to natural biocompatible polymers and has been proved as inducing tissue repair by enhancing the vasculogenesis process, guiding and recruiting cells responsible for osteogenesis, and acting as a solid matrix for controlled drug release. In-vivo biodegradability of the NR latex based scaffolds can be accelerated by addition of different biopolymers, such as hyaluronic acid. The hydrodynamic cavitation is simple, cheap method with unrivalled production capacity and produces stable NRL foams with interconnected porosity. Pore sizes can be regulated by process conditions. In our opinion, hydrodynamic cavitation has significant potential to replace the standard industrial methods of NRL foams production.

Název v anglickém jazyce

IAAM Scietific Medal Lecture: Natural rubbers current situation, challenges and opportunities for a sustainable world

Popis výsledku anglicky

IAAM Scietific Medal Lecture Ancient Mesoamerican peoples were processing natural rubber (ND) and possessed functional equivalent to vulcanization by 1600 B.C. (1), which predated development of the vulcanization proces, first describes by natural rubber has remained one of the key and irreplaceable strategic materials in many industrial applications to this day. It is used in in countless products of critical importance in our day-to-day life, such as in the automotive sector and in the healthcare system. Polyisoprene of NR has extremely high density of C atoms in its molecule and during the NRL biosynthesis in the rubber tree Hevea brasiliensis (or other plant sources) significant amounts of carbon dioxide can be sequestered from atmosphere, especially in the case of massive use of natural rubber in construction/building industries. The pursuit of carbon neutrality creates the conditions for a renaissance of a number of technologies and products based on NR, that have been replaced by synthetic plastics and elastomers in the past (such as the gutta-percha industry in the British Empire in 19th century), and for development novel technologies and products based on NR. Our effort in the field of utilization of natural rubber led to the development of a new technology of vulcanization at laboratory temperature and to a functional sample of an unique 3D printer of natural rubber based on this technology. In this lecture, we will present our results in the field of development of new types of natural rubber composite latex foams and new technologies for their production. Two different methods of NR latex foam production - modified Dunlop and hydrodynamic cavitation have been developed in our laboratories. Toxic agents used for industrial production of NRL foams have been replaced with safe natural compounds. Different inorganic or natural fillers of the foams have been tested. The main application areas of the developed NR composite foams are advanced thermal and sound - traditional cotton fabric drenched in NR latex extracted from wild rubber trees (Hevea brasiliensis) in Amazonia, sold in fabric sheets to textile corporations and marketed as an alternative to leather. We have also developed new kind of scaffolds for tissue engineering produced from NR latex with experimentally verified biocompatibility proved by successful colonization with adipose derived stem cells. Natural rubber belongs to natural biocompatible polymers and has been proved as inducing tissue repair by enhancing the vasculogenesis process, guiding and recruiting cells responsible for osteogenesis, and acting as a solid matrix for controlled drug release. In-vivo biodegradability of the NR latex based scaffolds can be accelerated by addition of different biopolymers, such as hyaluronic acid. The hydrodynamic cavitation is simple, cheap method with unrivalled production capacity and produces stable NRL foams with interconnected porosity. Pore sizes can be regulated by process conditions. In our opinion, hydrodynamic cavitation has significant potential to replace the standard industrial methods of NRL foams production.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20903 - Bioproducts (products that are manufactured using biological material as feedstock) biomaterials, bioplastics, biofuels, bioderived bulk and fine chemicals, bio-derived novel materials

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů