Achieving low dielectric, surface free energy and UV shielding green nanocomposites via reinforcing bio-silica aerogel with polybenzoxazine

Prabunathan, P.; Thennarasu, Palaniyandi; Song, Jang‐Kun; Alagar, M.

doi:10.1039/c7nj00138j

Cited by 26 publications

(8 citation statements)

References 75 publications

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“…The values are comparable with some modified polybenzoxazines and other resins. The dielectric constant of these materials is usually in the range of 2.5 to 4. − In addition, at 200 °C, PDG and PDM still maintained low dielectric constants. We presume that the giant phenanthrene ring structure increases the free volume of polybenzoxazines and that the phenanthrene ring is an electronics supply group that can reduce the polarity of the C–N bond.…”

Section: Results and Discussionmentioning

confidence: 99%

Novel Fully Biobased Benzoxazines from Rosin: Synthesis and Properties

Liu

Zhang

et al. 2017

ACS Sustainable Chem. Eng.

110

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In the present study, two novel fully biobased benzoxazines were synthesized using modified products of rosin, dehydroabietylamine, guaiacol, 4-methylumbelliferone, and paraformaldehyde. The chemical structures of DM (dehydroabietylamine, 4methylumbelliferone) and DG (dehydroabietylamine, guaiacol) were characterized by Fourier transform infrared spectroscopy (FTIR), 1 H nuclear magnetic resonance (NMR) and 13 C NMR spectra, dimensional nuclear magnetic and high-resolution mass spectrometry. The curing process of DM and DG was monitored by differential scanning calorimetry and in situ FTIR. The results demonstrated that the corresponding polymers PDM and PDG had high thermal stability. In addition, they had low dielectric constants below 3.30 at 25 °C and 1 kHz condition. Water contact angle measurements, OPC-time curves, and Tafel plots of PDG and PDM were also studied. The results showed that anticorrosion performances of PDG and PDM were stable during the immersion process and had strong abilities as shield corrosive media. Therefore, these two benzoxazine resins based on dehydrobietylamine may have potential applications in many fields.

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Section: Results and Discussionmentioning

confidence: 99%

Novel Fully Biobased Benzoxazines from Rosin: Synthesis and Properties

Liu

Zhang

et al. 2017

ACS Sustainable Chem. Eng.

110

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“…Alagar's group utilized functionalized silica aerogel (FSA) derived from RHA to reinforce a commercial benzoxazine (BA-a). 82 The 50 wt % FSA reinforced composite exhibited the lowest D k of 2.16 at 1 MHz. The same group also reported the development of biobased benzoxazines derived from agro wastes.…”

Section: Biomass Feedstock For Low-k Materialsmentioning

confidence: 99%

“…Interestingly, rice husk ash ( RHA ) as a source of abundant biomass has also been used to reduce the D k of benzoxazines. Alagar’s group utilized functionalized silica aerogel (FSA) derived from RHA to reinforce a commercial benzoxazine ( BA-a ) . The 50 wt % FSA reinforced composite exhibited the lowest D k of 2.16 at 1 MHz.…”

Section: Low-k Polymers Derived From Biomassmentioning

confidence: 99%

Low-Dielectric Polymers Derived From Biomass

Hou

Fang

Huang

et al. 2021

ACS Appl. Polym. Mater.

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Biomass-derived high-performance polymers have recently received much attention because they are easily available and renewable. More recently, researchers have been interested in low-dielectric polymers derived from biomass feedstock. These polymers display good dielectric properties and high thermostability, as well as good mechanical properties, implying that they have potential application in microelectronic industry, especially in fifth-generation communication (5G). This review summarizes recent progress in low dielectric polymers based on the biomass, including the synthesis and properties of different types of biomass resins such as epoxy resins, benzoxazine resins, benzocyclobutene resins, perfluorocyclobutane resins, cyanate eaters, polyester resins, phthalonitrile resins, and a functional maleimide.

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“…51,52 Various studies have found that composites of silica with different polymers can improve functional behavior, particularly low SFE, water repellency, and UV-shielding tendency. 53,54 As a result, the combination of mesoporous silicates and epoxy is expected to give more water repellency and UV protection.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous silica/epoxy coated cotton fabric for durable oil-water separation

Gopalsamy

Thilagavathi

2022

Journal of Industrial Textiles

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A simple, durable, superior UV-shielded, self-cleanable, hydrophobic/superoleophile cotton fabric was developed using SBA-15 mesoporous silica and epoxy coating (SE). The cotton fabric surfaces after coating with SE showed the highest water contact angle value of 146° and lowest surface free energy of 13.9 mN/m. As a filtration membrane, the developed SE/cotton delivered 95.8% oil–water separation efficiency with a notable flux value of 6800 L/m2h against diesel–water mixture. The presence of an epoxy and silica hybrid layer on the surfaces of cotton fabric induced self-cleaning behavior and notable durability against UV light (UPF-29), pH resistance, washing fastness, and mechanical abrasion. Hence, the present coating developed using mesoporous silica and epoxy can be applied to different types of textile substrates to construct durable low-cost membranes.

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Achieving low dielectric, surface free energy and UV shielding green nanocomposites via reinforcing bio-silica aerogel with polybenzoxazine

Cited by 26 publications

References 75 publications

Novel Fully Biobased Benzoxazines from Rosin: Synthesis and Properties

Novel Fully Biobased Benzoxazines from Rosin: Synthesis and Properties

Low-Dielectric Polymers Derived From Biomass

Mesoporous silica/epoxy coated cotton fabric for durable oil-water separation

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