Biopolymer Composites With High Dielectric Performance: Interface Engineering
01 Jan 2017-pp 27-128
TL;DR: In this article, the preparation and dielectric behavior of various biopolymer composites is presented, including metal nanoparticles and carbon-based nanofillers such as carbon nanotubes, graphene, etc.
Abstract: In recent years, there is a growing interest in studying the dielectric behavior of biopolymer composites due to their potential application as a dielectric material in various electronic devices such as microchips, transformers, and circuit boards. Conducting electroactive polymer composites have also been investigated for various potential applications which include biological, biomedical, flexible electrodes, display devices, biosensors, and cells for tissue engineering. In this chapter, the preparation and dielectric behavior of various biopolymer composites is presented. These biopolymer composites generally consist of nanoscale metal nanoparticles and carbon-based nanofillers such as carbon nanotubes, graphene, graphene oxide (GO), etc., dispersed into the polymer matrix. The physical and chemical properties of these fillers and their interactions with polymers have a significant effect on the microstructure and the final properties of nanocomposites. The biopolymer composites with excellent dielectric properties show great promise as an energy storage dielectric layer in high-performance capacitor applications such as embedded capacitors. This chapter highlights some of the examples of such biopolymer composites; their processing and dielectric behavior will be discussed in detail.
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TL;DR: In this paper , a polyaniline and cupric oxide-based nanocomposite material (PANI-CuO) was used for the adsorption of Pb2+, Cd2+, and Cr6+ ions from contaminated water.
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TL;DR: In this article, the optimal conditions for fabricating electrospun gelatin fiber mats (GFM) loaded with crude C.carandas fruits ethanol extract (CCE) were investigated.
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TL;DR: Nano-emulgel is an emerging drug delivery system intended to enhance the therapeutic profile of lipophilic drugs as discussed by the authors , which is an amalgamated preparation of different systems aiming to deal with these limitations.
Abstract: Nano-emulgel is an emerging drug delivery system intended to enhance the therapeutic profile of lipophilic drugs. Lipophilic formulations have a variety of limitations, which includes poor solubility, unpredictable absorption, and low oral bioavailability. Nano-emulgel, an amalgamated preparation of different systems aims to deal with these limitations. The novel system prepared by the incorporation of nano-emulsion into gel improves stability and enables drug delivery for both immediate and controlled release. The focus on nano-emulgel has also increased due to its ability to achieve targeted delivery, ease of application, absence of gastrointestinal degradation or the first pass metabolism, and safety profile. This review focuses on the formulation components of nano-emulgel for topical drug delivery, pharmacokinetics and safety profiles.
6 citations
01 Jan 2019
TL;DR: In this article, the main focus of this chapter is on energy applications of biopolymers and the study presents the future trend of bi-polymers for energy applications, and briefly explains the types, areas of application, properties and the reasons for the selection of bipolymers in the energy, biomedical and packaging sector.
Abstract: An alternative and/or improved material for the energy sector is of major concern due to the advancement in the sector and the hazardous environmental impact of the current materials in use. Weight is also an issue when it comes to materials for energy generation, conversion, and storage. Bio-polymeric materials are currently being considered as an alternative option due to the inherent properties such as high strength-to-weight ratio, biodegradability, renewability, biocompatibility and cost-effectiveness. Based on these properties and the potentials of biopolymers, the composite materials are considered viable. The main focus of this chapter is on energy applications of biopolymers. The chapter also briefly explains the types, areas of application, properties and the reasons for the selection of biopolymers in the energy, biomedical and packaging sector. Finally, the study presents the future trend of biopolymers for energy applications.
6 citations
TL;DR: In this article , a solid material for a pH-responsive indicator was developed from hydroxypropyl methylcellulose (HPMC) composited with microcrystalline cellulose (MCC).
Abstract: Intelligent packaging with indicators that provide information about the quality of food products can inform the consumer regarding food safety and reduce food waste. A solid material for a pH-responsive indicator was developed from hydroxypropyl methylcellulose (HPMC) composited with microcrystalline cellulose (MCC). MCC at 5%, 10%, 20%, and 30% w/w was introduced into the HPMC matrix and the physical, barrier, thermal, and optical properties of the HPMC/MCC bio-composite (HMB) films were analyzed. At 5, 10, and 20% MCC, improved mechanical, transparency, and barrier properties were observed, where HMB with 20% of MCC (H20MB) showed the best performance. Therefore, H20MB was selected as the biodegradable solid material for fabricating Roselle anthocyanins (RA) pH sensing indicators. The performance of the RA-H20MB indicator was evaluated by monitoring its response to ammonia vapor and tracking freshness status of chicken tenderloin. The RA-H20MB showed a clear color change with respect to ammonia exposure and quality change of chicken tenderloin; the color changed from red to magenta, purple and green, respectively. These results indicated that RA-H20MB can be used as a biodegradable pH sensing indicator to determine food quality and freshness.
6 citations
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TL;DR: Chitin is the second most important natural polymer in the world as mentioned in this paper, and the main sources of chitin are two marine crustaceans, shrimp and crabs, which are used for food, cosmetics, biomedical and pharmaceutical applications.
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4,579 citations