Effect of nanosilica and neem tree oil on antimicrobial, thermal, mechanical and electrical insulate of biodegradable composite film

Thiyagu, T Thendral; Rajeswari, N.

doi:10.1088/2053-1591/ab30a1

Cited by 16 publications

(13 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Overcoming new technological challenges and greater social awareness of environmental protection are the ideal basis for investigating new materials that improve the properties of existing ones, but by putting natural resources to better use. In recent years, considerable efforts have been carried out to develop biodegradable materials [1][2][3][4][5][6][7][8] and composites [9,10], allowing the reduction of plastic contamination and optimizing composite components and structures. Thermoplastic materials have shown a strong growth due to their good mechanical properties and possibility to be recycled [11].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Moduli of Polybutylene Terephthalate Glass Fiber Reinforced in High-Temperature Environments

et al. 2021

View full text Add to dashboard Cite

The aim of this work was to show the evolution over time of the dynamic moduli in components made of Polybutylene Terephthalate reinforced with glass fiber when they are held to temperatures close to the glass transition temperature over time. For this purpose, PBT samples reinforced with short, glass fibers of Ultradur® material with 0%, 20%, and 50% in weight content were tested. Dynamic moduli showed an increment with glass fiber content showing a nonlinear behavior with the temperature. The evolution of storage modulus was depicted by means of a modified law of mixtures with an effectiveness factor depending on temperature and fiber content, whereas the evolution over time was obtained with a time–temperature transformation generated with the TTS Data Analysis software of TA-instruments for a given temperature. Storage modulus showed a linear relationship with glass fiber content when components were held to temperatures near to their respective glass transition temperature, obtained from the maximum of loss modulus curve with temperature. In summary, the value and evolution of dynamic moduli of PBT samples improved with glass fiber content, allowing us to increase the durability of components when they are submitted to high-temperature environments.

show abstract

Section: Introductionmentioning

confidence: 99%

Dynamic Moduli of Polybutylene Terephthalate Glass Fiber Reinforced in High-Temperature Environments

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Figure 6A shows the sustained release profiles of SiO 2 -CA microcapsules at different temperatures (40,23, and 4 • C). Active-agent released over 15 days which was divided into three stages, rapid release from 0-18 h, slow-release from 19 h to equilibrium, and the final plateau (complete release on the 3rd d at 40 • C, the 7th d at 25 • C and the 9th d at 4 • C).…”

Section: Sustained-release Performance Analysismentioning

confidence: 99%

“…In other words, it possesses the flexibility and biodegradability of aliphatic polyesters and the good mechanical properties of aromatic polyesters [18][19][20][21]. Several researchers have studied that the addition of natural substances can enhance the basic properties of PBAT films and impart antibacterial properties [22,23]. However, no research work has been found on development of antimicrobial nanoscale silica microcapsule containing cinnamaldehyde (CA) and its application in packaging films.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Long-Term Antibacterial SiO2-Cinnamaldehyde Microcapsule via Sol-Gel Approach as a Functional Additive for PBAT Film

Huang

Dang

et al. 2020

Processes

View full text Add to dashboard Cite

The mesoporous silica wall materials can achieve controlled load and sustained-release of active agents. An antimicrobial nanoscale silica microcapsule containing cinnamaldehyde (CA) was prepared by the sol-gel method and applied in poly (butyleneadipate-co-terephthalate) (PBAT) film. The surface morphology, physical and chemical properties, and antibacterial properties of microcapsules and films were studied. The effects of different temperatures and humidities on the release behavior of microcapsules were also evaluated. Results showed that CA was successfully encapsulated in silica microcapsule which had a diameter of 450–700 nm. The antibacterial CA agent had a long-lasting release time under lower temperature and relative humidity (RH) environment. At low temperature (4 °C), the microcapsules released CA 32.35% in the first 18 h, and then slowly released to 56.08% in 216 h; however, the microcapsules released more than 70% in 18 h at 40 °C. At low humidity (50%RH), the release rates of microcapsules at the 18th h and 9th d were 43.04% and 78.01%, respectively, while it reached to equilibrium state at 72 h under 90% RH. The sustained release process of CA in SiO2-CA microcapsules follows a first-order kinetic model. Physicochemical properties of PBAT films loaded with different amounts of microcapsules were also characterized. Results showed that the tensile strength and water vapor transmission rate (WVTR) of the composite film containing 2.5% microcapsules were increased by 26.98% and 14.61%, respectively, compared to the raw film, while the light transmittance was slightly reduced. The crystallinity of the film was improved and can be kept stable up to 384.1 °C. Furthermore, microcapsules and composite film both exhibited distinctive antibacterial effect on Escherichia coli and Listeria monocytogenes. Therefore, SiO2-CA microcapsules and composite films could be a promising material for the active packaging.

show abstract

“…The presence of biochar particles results in a severe reduction in contact angle, which leads to a significant increase in surface energy in the composite's surface. [38] Because both C. urens and biochar have a hydrophilic nature, they absorb a lot of water molecules. [39] The contact angle is maintained at 70 despite the addition of 7 wt% biochar.…”

Section: Thermal Conductivitymentioning

confidence: 99%

“…The contact angle was also reduced due to the high surface energy of the composite. Contact angles of 98 , 92 , 81 , and 70 are given by the composite designations ECB1, ECB2, ECB3, and ECB4.The presence of biochar particles results in a severe reduction in contact angle, which leads to a significant increase in surface energy in the composite's surface [38]. Because both C. urens and biochar have a hydrophilic nature, they absorb a lot of water molecules [39].…”

mentioning

confidence: 99%

Mechanical, dielectric, and hydrophobicity behavior of coconut shell biochar toughened Caryota urens natural fiber reinforced epoxy composite

Jayabalakrishnan¹,

Prabhu²,

Iqbal

et al. 2021

Polymer Composites

View full text Add to dashboard Cite

High toughness epoxy bio-composites were prepared using Caryota urens fiber and biochar particle for light weight and low cost engineering applications.The main aim of this research was to study the effect of adding biochar along with C. urens fiber in epoxy resin composite and its properties. The biochar used in this present study was prepared from coconut shell using pyrolysis process. The composites prepared with 5 vol% of biochar gives highest tensile strength and modulus of 172 MPa and 6.7 GPa. Similarly, the biochar of 7 vol% in epoxy resin reduced the wear volume to the greater extend. Moreover, a highest dielectric constant and loss factor of 6.2, 1.6, and a thermal conductivity of 0.33 W/mK with high hydrophobic contact angle of 70 was observed for composite made using 7 vol% of biochar. These improved dielectric, mechanical, barrier and tribological properties composite could be used as microwave shielding material in electronic gadgets, signal processing units and other telecommunication devices as shielding material with good mechanical properties required.

show abstract

Effect of nanosilica and neem tree oil on antimicrobial, thermal, mechanical and electrical insulate of biodegradable composite film

Cited by 16 publications

References 22 publications

Dynamic Moduli of Polybutylene Terephthalate Glass Fiber Reinforced in High-Temperature Environments

Dynamic Moduli of Polybutylene Terephthalate Glass Fiber Reinforced in High-Temperature Environments

Preparation of Long-Term Antibacterial SiO2-Cinnamaldehyde Microcapsule via Sol-Gel Approach as a Functional Additive for PBAT Film

Mechanical, dielectric, and hydrophobicity behavior of coconut shell biochar toughened Caryota urens natural fiber reinforced epoxy composite

Contact Info

Product

Resources

About