LIVIVO - Search results -

Search results

Result 1 - 10 of total 17

Search options

Article ; Online: Thermal degradation and flame spread characteristics of epoxy polymer composites incorporating mycelium.

Chulikavit, Nattanan / Huynh, Tien / Khatibi, Akbar / Das, Raj / Kandare, Everson

2023 Volume 13, Issue 1, Page(s) 17812

Abstract: Although bioderived flame retardants are environmentally sustainable and less toxic, their impact on the thermal stability and flammability of polymers remains poorly understood. In this study, we assessed the influence of mycelium on the thermal ... ...

Abstract	Although bioderived flame retardants are environmentally sustainable and less toxic, their impact on the thermal stability and flammability of polymers remains poorly understood. In this study, we assessed the influence of mycelium on the thermal stability and flame spread characteristics of epoxy through thermogravimetric analysis, Fourier transform infrared spectroscopy, the UL94 flammability test, and scanning electron microscopy. We observed a decrease in the maximum mass loss rate temperature when mycelium was incorporated into epoxy, indicating an earlier onset of thermal degradation. The inclusion of mycelium increased char yields above 418 °C due to mycelium's inherent char-forming ability. However, mycelium did not alter the thermal degradation pathway of epoxy. Furthermore, according to the UL94 test results, the incorporation of mycelium reduced the flame spread rate compared to that of neat epoxy. These findings contribute to our understanding of the interaction between bioderived flame retardants and polymers paving the way for the development of more sustainable fireproofing materials.
Language	English
Publishing date	2023-10-19
Publishing country	England
Document type	Journal Article
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-023-45097-0
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Article ; Online: Fireproofing flammable composites using mycelium: Investigating the effect of deacetylation on the thermal stability and fire reaction properties of mycelium

Chulikavit, Nattanan / Wang, Cheng / Huynh, Tien / Yuen, Anthony Chun Yin / Khatibi, Akbar / Kandare, Everson

Polymer Degradation and Stability. 2023 Sept., v. 215 p.110419-

2023

Abstract: This paper presents research findings on the influence of alkaline deacetylation on the thermal stability and fire reaction properties of non-pathogenic Basidiomycota fungi (mycelium) grown in molasses. The relationship between deacetylation conditions, ... ...

Abstract	This paper presents research findings on the influence of alkaline deacetylation on the thermal stability and fire reaction properties of non-pathogenic Basidiomycota fungi (mycelium) grown in molasses. The relationship between deacetylation conditions, such as incubation time and NaOH concentration, and the thermal and fire reaction properties of mycelium was investigated. The degree of deacetylation was also examined for its influence on the high-temperature thermal stability of mycelium, such as char formation. The findings indicated that the high-temperature thermal stability increased as the degree of deacetylation increased due to the conversion of chitin into chitosan as well as the presence of char-promoting hydroxyl‑terminated polysaccharide moieties. The study further investigated the influence of hollow glass microspheres on the thermal properties and microscale combustion behaviour of unmodified and deacetylated mycelium. This study provides an in-depth analysis of the thermal degradation mechanisms that govern the thermal stability and char-forming ability of unmodified and deacetylated mycelium. Additionally, the link between the thermal stability and fire reaction properties of mycelium and its deacetylated derivatives was established. Finally, the effectiveness of unmodified and deacetylated mycelium mats for fireproofing flammable glass fibre-reinforced epoxy laminates exposed to a simulated moderate-intensity fire was evaluated.
Keywords	Basidiomycota ; chitin ; chitosan ; combustion ; epoxides ; glass ; microparticles ; molasses ; mycelium ; polymers ; thermal degradation ; thermal stability ; Flammability ; Fire reaction properties ; Fireproofing
Language	English
Dates of publication	2023-09
Publishing place	Elsevier Ltd
Document type	Article ; Online
ZDB-ID	1502217-1
ISSN	0141-3910
ISSN	0141-3910
DOI	10.1016/j.polymdegradstab.2023.110419
Database	NAL-Catalogue (AGRICOLA)

Order via subito

Article ; Online: Interfacial Engineering Methods in Thermoplastic Composites: An Overview.

Periasamy, Kailashbalan / Kandare, Everson / Das, Raj / Darouie, Maryam / Khatibi, Akbar A

Polymers

2023 Volume 15, Issue 2

Abstract: The paper critically analyzed different interfacial enhancing methods used in thermoplastic composites. Although the absence of cross-linked polymer chains and chemical bonds on solidification enables the thermoplastics to be remelted, it creates weak ... ...

Abstract	The paper critically analyzed different interfacial enhancing methods used in thermoplastic composites. Although the absence of cross-linked polymer chains and chemical bonds on solidification enables the thermoplastics to be remelted, it creates weak interfacial adhesion between fibre reinforcements and the thermoplastic matrix. The weak fibre-matrix interface bonding reduces the efficiency with which the applied load can be transferred between these composite constituents, causing the composite to fail prematurely. Their need for high-temperature processing, poor compatibility with other polymer matrices, and relatively high viscosity render thermoplastics challenging when used to manufacture composite laminates. Therefore, various methods, including nanoparticles, changing the polarity of the fibre surface by plasma etching, chemical treatment with ozone, or an oxidative attack at the fibre surface, have been applied to improve the fibre/matrix bonding in thermoplastic composites. The fabrication steps followed in these techniques, their progress in research, and the associated toughening mechanisms are comprehensively discussed in this paper. The effect of different fibre-matrix interfacial enhancement methods on the mechanical properties of thermoplastic composites is also deliberated.
Language	English
Publishing date	2023-01-12
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2527146-5
ISSN	2073-4360 ; 2073-4360
ISSN (online)	2073-4360
ISSN	2073-4360
DOI	10.3390/polym15020415
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Development and characterisation of hybrid composite skin simulants based on short polyethylene fibre and bioactive glass particle-reinforced silicone.

Chattrairat, Akanae / Kandare, Everson / Aimmanee, Sontipee / Tran, Phuong / Das, Raj

Journal of the mechanical behavior of biomedical materials

2022 Volume 136, Page(s) 105424

Abstract: Silicone elastomers are widely recognised as artificial skins for medical prosthesis and cranial injury assessment. Since silicone is not an ideal skin simulant due to the lack of mechanical stiffness and a fibrous structure, the present study aimed to ... ...

Abstract	Silicone elastomers are widely recognised as artificial skins for medical prosthesis and cranial injury assessment. Since silicone is not an ideal skin simulant due to the lack of mechanical stiffness and a fibrous structure, the present study aimed to tailor the mechanical and structural characteristics of silicone by integrating biocompatible reinforcements (namely, short polyethylene fibres and bioglass particles) to develop suitable bio-integrative skin simulant candidates. The influences of short polyethylene fibres and bioglass particles in the selected platinum silicone on the mechanical properties of silicone-based composite skin simulants were investigated with various factors, including filler concentration, KMnO
MeSH term(s)	Humans ; Polyethylene ; Materials Testing ; Elastic Modulus ; Dental Materials ; Silicone Elastomers
Chemical Substances	Polyethylene (9002-88-4) ; Dental Materials ; Silicone Elastomers
Language	English
Publishing date	2022-08-23
Publishing country	Netherlands
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2378381-3
ISSN	1878-0180 ; 1751-6161
ISSN (online)	1878-0180
ISSN	1751-6161
DOI	10.1016/j.jmbbm.2022.105424
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article: Thermal-based experimental method and kinetic model for predicting the composition of crumb rubber derived from end-of-life vehicle tyres

Sun, Da / Kandare, Everson / Maniam, Subashani / Zhou, Annan / Robert, Dilan / Buddhacosa, Nathaphon / Giustozzi, Filippo

Journal of cleaner production. 2022 July 10, v. 357

2022

Abstract: End-of-life vehicle tyres are processed into granulised particles (crumb rubber) for reuse in various industries including building and construction. Crumb rubber compositions vary between batches due to the variability in the source of end-of-life tyres ...

Abstract	End-of-life vehicle tyres are processed into granulised particles (crumb rubber) for reuse in various industries including building and construction. Crumb rubber compositions vary between batches due to the variability in the source of end-of-life tyres (EOLTs). Therefore, it is essential to develop cost-effective tools for rapid chemical (rubber) composition assessment of EOLT-derived crumb rubber to match engineering requirements. This study evaluated the effectiveness of a thermal-based (experimental and analytical) model in predicting the rubber chemical composition of EOLT-derived crumb exclusively sourced from passenger cars, light off-road vehicles and heavy trucks. A thermal degradation kinetic model based on thermogravimetric analysis (TGA) was used to predict the fractional weight of rubber components in EOLT-derived crumb rubber. Different rubber components present in the crumb rubber were confirmed via Fourier Transform Infrared (FTIR) spectroscopy. The thermal model predicted marginally higher natural rubber content (+5–6%) in heavy truck compared to passenger car tyre-derived crumb rubber. In contrast, the model predicted a slightly higher content (+5–6%) of styrene-butadiene in passenger car-derived crumb rubber. The thermal model successfully predicted the composition of EOLT-derived crumb rubber enabling rapid screening of such products to match engineering applications.
Keywords	Fourier transform infrared spectroscopy ; automobiles ; chemical composition ; cost effectiveness ; kinetics ; models ; rubber ; thermal degradation ; thermogravimetry
Language	English
Dates of publication	2022-0710
Publishing place	Elsevier Ltd
Document type	Article
ISSN	0959-6526
DOI	10.1016/j.jclepro.2022.132002
Database	NAL-Catalogue (AGRICOLA)

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Influence of growth rates, microstructural properties and biochemical composition on the thermal stability of mycelia fungi.

Chulikavit, Nattanan / Huynh, Tien / Dekiwadia, Chaitali / Khatibi, Akbar / Mouritz, Adrian / Kandare, Everson

Scientific reports

2022 Volume 12, Issue 1, Page(s) 15105

Abstract: Mycelium fungal species exhibit fire retardant characteristics. The influence of the growth media on the fungal growth rates, biochemical composition, and microstructural characteristics and their relationship to thermal properties is poorly understood. ... ...

Abstract	Mycelium fungal species exhibit fire retardant characteristics. The influence of the growth media on the fungal growth rates, biochemical composition, and microstructural characteristics and their relationship to thermal properties is poorly understood. In this paper, we demonstrate that molasses can support the growth of non-pathogenic Basidiomycota phylum fungal species producing bio-derived materials with potential fire retardation characteristics. Scanning electron microscopy and Fourier transform infrared (FTIR) spectrometry were used to interrogate the microstructural and biochemical properties of the molasses-grown mycelia species. Thermal decomposition of molasses-fed mycelia was evaluated via thermogravimetric analysis interfaced with FTIR for real-time evolved gas analysis. The morphological and microstructural characteristics of the residual char post-thermal exposure were also evaluated. The material characterization enabled the establishment of a relationship between the microstructural, biochemical properties, and thermal properties of molasses-fed mycelia. This paper presents a comprehensive exploration of the mechanisms governing the thermal degradation of three mycelial species grown in molasses. These research findings advance the knowledge of critical parameters controlling fungal growth rates and yields as well as how the microstructural and biochemical properties influence the thermal response of mycelia.
MeSH term(s)	Basidiomycota ; Culture Media/metabolism ; Fires ; Molasses ; Mycelium
Chemical Substances	Culture Media
Language	English
Publishing date	2022-09-06
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-022-19458-0
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article: Ultra-tough and in-situ repairable carbon/epoxy composite with EMAA

Loh, Thomas W / Ladani, Raj B / Orifici, Adrian / Kandare, Everson

Composites. 2021 Apr., v. 143

2021

Abstract: Preforming is a common process in the manufacture of net-shaped composites, and there is a critical need for technologies that improve manufacturing speed without adversely impacting the interlaminar fracture toughness. Furthermore, composite structures ... ...

Abstract	Preforming is a common process in the manufacture of net-shaped composites, and there is a critical need for technologies that improve manufacturing speed without adversely impacting the interlaminar fracture toughness. Furthermore, composite structures that are repairable in-situ have potential for significant cost and performance benefits. This paper presents a new multi-functional composite system that combines ultra-high interlaminar fracture toughness with exceptional repair efficiency and is seamlessly integrated into the braiding process for rapid preform manufacture. The co-braided repair agent, EMAA, is shown to improve the interlaminar fracture toughness by over threefold, while enabling full recovery of the fracture properties via a thermal repair process. The resistance to crack initiation and crack propagation were strongly influenced by the geometric shape and spatial distribution of the EMAA which, in turn, was dictated by the preforming time. A new strategy is developed to produce a 3D fused EMAA network that enables the effective delivery of the repair agent into the delamination cracks and a greater than 100% recovery to the steady-state fracture toughness following delamination repair. The EMAA composites developed in this study exhibited repeated (at least three cycles) in-situ delamination repair abilities.
Keywords	carbon ; delamination ; epoxides ; geometry ; manufacturing
Language	English
Dates of publication	2021-04
Publishing place	Elsevier Ltd
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	2012223-8
ISSN	1359-835X
ISSN	1359-835X
DOI	10.1016/j.compositesa.2020.106206
Database	NAL-Catalogue (AGRICOLA)

Order via subito

Article ; Online: Towards antiviral polymer composites to combat COVID-19 transmission.

Mouritz, Adrian P / Galos, Joel / Linklater, Denver P / Ladani, Raj B / Kandare, Everson / Crawford, Russell J / Ivanova, Elena P

Nano select : open access

2021 Volume 2, Issue 11, Page(s) 2061–2071

Abstract: Polymer matrix composite materials have the capacity to aid the indirect transmission of viral diseases. Published research shows that respiratory viruses, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2 or COVID-19), can attach to ... ...

Abstract	Polymer matrix composite materials have the capacity to aid the indirect transmission of viral diseases. Published research shows that respiratory viruses, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2 or COVID-19), can attach to polymer substrata as a result of being contacted by airborne droplets resulting from infected people sneezing or coughing in close proximity. Polymer matrix composites are used to produce a wide range of products that are "high-touch" surfaces, such as sporting goods, laptop computers and household fittings, and these surfaces can be readily contaminated by pathogens. This article reviews published research on the retention of SARS-CoV-2 and other virus types on plastics. The factors controlling the viral retention time on plastic surfaces are examined and the implications for viral retention on polymer composite materials are discussed. Potential strategies that can be used to impart antiviral properties to polymer composite surfaces are evaluated. These strategies include modification of the surface composition with biocidal agents (e.g., antiviral polymers and nanoparticles) and surface nanotexturing. The potential application of these surface modification strategies in the creation of antiviral polymer composite surfaces is discussed, which opens up an exciting new field of research for composite materials.
Language	English
Publishing date	2021-05-04
Publishing country	Germany
Document type	Journal Article ; Review
ZDB-ID	3042763-0
ISSN	2688-4011 ; 2688-4011
ISSN (online)	2688-4011
ISSN	2688-4011
DOI	10.1002/nano.202100078
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article: Evaluating the influence of varied fire-retardant surface coatings on post-heat flexural properties of glass/epoxy composites

Kandare, Everson / Baljinder K. Kandola / Peter Myler

Fire safety journal. 2013 May, v. 58

2013

Abstract: This paper investigates the influence of char-forming, flame-inhibiting and intumescent surface coatings on the post-heat flexural behavior of glass fibre-reinforced epoxy composites exposed to one-sided radiant heating. The fire performance of glass/ ... ...

Abstract	This paper investigates the influence of char-forming, flame-inhibiting and intumescent surface coatings on the post-heat flexural behavior of glass fibre-reinforced epoxy composites exposed to one-sided radiant heating. The fire performance of glass/epoxy laminates surface-coated with varied formulations was evaluated using a cone calorimeter under various external heat fluxes (25, 50 and 65kW/m²). Self-sustained ignition was significantly delayed for fire-protected laminates relative to the control. The peak heat release rates and the time to reach this event were significantly reduced in thermally-protected laminates. In addition to the chemical nature of flame retardant chemicals present in the coatings, the time to reach the peak heat release rate and the magnitude of the total heat release were influenced by the quantity and morphology of the char formed by each type of surface coating. The post-heat flexural performance of heat-damaged laminates was determined via three-point bending. There was a significant improvement in the post-heat flexural moduli retention in thermally-protected glass/epoxy laminates. This may be due to the flame retardation efficacy of the coatings and the ability of the charred structures to reduce the heat transfer into the substrate thereby protecting the underlying composite and its mechanical integrity.
Keywords	calorimeters ; coatings ; epoxides ; fire prevention ; flame retardants ; glass ; heat transfer
Language	English
Dates of publication	2013-05
Size	p. 112-120.
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	1483569-1
ISSN	0379-7112
ISSN	0379-7112
DOI	10.1016/j.firesaf.2013.01.009
Database	NAL-Catalogue (AGRICOLA)

Order via subito

Article: Thermal degradation of acetate-intercalated hydroxy double and layered hydroxy salts.

Kandare, Everson / Hossenlopp, Jeanne M

Inorganic chemistry

2006 Volume 45, Issue 9, Page(s) 3766–3773

Abstract: Two hydroxy double salts (HDSs), zinc copper hydroxy acetate (ZCA) and zinc nickel hydroxy acetate (ZNA), and an analogous layered compound, zinc hydroxy acetate (ZHA), have been prepared by a coprecipitation method. The thermal degradation of these ... ...

Abstract	Two hydroxy double salts (HDSs), zinc copper hydroxy acetate (ZCA) and zinc nickel hydroxy acetate (ZNA), and an analogous layered compound, zinc hydroxy acetate (ZHA), have been prepared by a coprecipitation method. The thermal degradation of these materials was characterized via thermogravimetric analysis (TGA), differential thermal analysis (DTA), and TGA coupled with Fourier transform infrared spectroscopy of gas-phase products, TGA-FTIR. Loss of physisorbed and interlayer H2O was observed between 50 and 150 degrees C for all compounds. Acetic acid, acetone, water, and CO2 were released at high temperatures with relative acetone yields found to be dependent on precursor identity, with very little formed from ZCA compared with ZHA and ZNA. Combined FTIR and XRD analysis of solid residues extracted at different points in the heating profile suggests that ketonization occurs via dissociative adsorption of acetic acid on ZnO surfaces. Nanometer-sized ZnO particles were formed from ZHA, showing slight preferential growth in the ZnO (002) lattice direction, while the presence of a second metal, Ni or Cu, served to retard ZnO crystallite growth at temperatures below 600 degrees C and eliminate preferential growth. ZCA leads to the formation of reduced copper species (metallic copper and Cu2O) when heated to 250 degrees C.
Language	English
Publishing date	2006-05-01
Publishing country	United States
Document type	Journal Article
ZDB-ID	1484438-2
ISSN	1520-510X ; 0020-1669
ISSN (online)	1520-510X
ISSN	0020-1669
DOI	10.1021/ic060071k
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

To top

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito