Synthesis, optimization and applications of ZnO/polymer nanocomposites

Ponnamma, Deepalekshmi; Cabibihan, John-John; Rajan, Mariappan; Pethaiah, S. Sundar; Deshmukh, Kalim; Gogoi, Jyoti Prasad; Pasha, S. K. Khadheer; Ahamed, M. Basheer; Jagadish, K.; Chandrashekar, Bananakere Nanjegowda; Polu, Anji Reddy; Cheng, Chun

doi:10.1016/j.msec.2019.01.081

Cited by 207 publications

(84 citation statements)

References 295 publications

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“…The choice of nano-ZnO as an additive is related to its capacity to produce well-compacted geopolymers, its low cost and its wide range of applications as well as its effective influence on improving the properties of many polymers [12,13]. The high heat capacity, low thermal expansion and high melting temperature of ZnO are, moreover, characteristics that are beneficial for ceramic applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of nano-ZnO on mechanical and thermal properties of geopolymer

Zidi

Ltifi

Ayadi

et al. 2019

Journal of Asian Ceramic Societies

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In this experimental study, we synthesized geopolymer materials with different amounts of nano-ZnO (0.3%, 0.5% and 0.7%). The effects of the nano-ZnO concentration on the mechanical, structural and thermal properties were studied in detail. XRD investigation revealed the formation of a glassy phase in all the samples and a small shift of the intense peak, which confirmed the incorporation of nano-ZnO into the geopolymer matrix. FTIR analyses showed an increase in the geopolymerization after the addition of nano-ZnO to geopolymer paste. The morphology of the inorganic polymers was studied by mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM). The addition of nano-ZnO improved the ultrasonic pulse velocity and increased the compressive strength from 30 to 38 MPa. It was found that the strength reached its maximum value at a critical nano-ZnO concentration of 0.5 at.%. The thermal properties of geopolymer nano-ZnO were also investigated using thermogravimetric analysis (TGA), which showed that the incorporation of nano-ZnO decreased weight loss by the geopolymers. The density and the absorption water were also tested and all the results were discussed. ARTICLE HISTORY * The title of this manuscript should define any chemical symbols or structures by the names, so I suggest that authors change the title to "Study the effect of nano zinc oxide on structural, thermal, and mechanical properties of geopolymerbased metakaolin". "Study the effect of nano-ZnO on structural, mechanical and thermal properties of geopolymer-based metakaolin" → Effect of nano-ZnO on mechanical and thermal properties of geopolymer Abstract * Please, authors, clarify and rephrase the concept of the sentences in lines 20 and 21.Furthermore, infrared specters showed an increase of geopolymer gel content with the addition of nano-ZnO → FTIR analyses showed an increase in the geopolymerization after the addition of nano-ZnO to the geopolymer paste. * The sentences in the lines 25 and 26 need rephrasing and English grammar check, please.

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Section: Introductionmentioning

confidence: 99%

Effect of nano-ZnO on mechanical and thermal properties of geopolymer

Zidi

Ltifi

Ayadi

et al. 2019

Journal of Asian Ceramic Societies

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“…Usually, there are three approaches to achieve these requirements: (1) alteration of fillers/nanomaterial properties, (2) alteration of polymer properties by functionalization or formation of co-polymers, and (3) developing desired properties with the hybrid materials/polymeric nanocomposite. On the basis of agricultural applications, polymeric coating or polymeric nanocomposite is important, as higher concentration of nanomaterials might cause some extent of toxicity within the plants [64,65].…”

Section: Metal-polymer Compositesmentioning

confidence: 99%

Polymeric Nanocomposite-Based Agriculture Delivery System: Emerging Technology for Agriculture

Ashfaq¹,

Talreja²,

Chuahan³

et al. 2020

Genetic Engineering - A Glimpse of Techniques and Applications

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The increasing global population has forced the agricultural area to enhance the yield of crop, thereby fulfilling the requirements of people. The advancement has led to synthesis of nanomaterials with different size, shapes, and biocompatibility aspects towards specific applications like agriculture. Several nanomaterials such as metal, metal oxide, carbon nanotubes (CNTs), carbon nanofibers (CNFs), graphene, and its derivatives have shown potential ability for augmenting the yield of crops and protect crops against pathogens. However, these nanomaterials required smart delivery system that might easily deliver the nanofertilizers in a controlled manner. In this context, the incorporation of nanotechnology and polymer science might be developing newer technology with minimal usage and maximum effectiveness for improvement of crops. The incorporation of nanomaterials in polymeric composites offers newer approaches for agricultural delivery system that might provide various advantages such as higher stability, solubility, uniform distribution, and controlled release. Moreover, nanomaterials have potential ability for advancement in the genetic engineering. Herein, we discuss the role of nanomaterials in the growth of the plant, polymeric nanocomposite materials for agriculture delivery system with the advancement in the genetic engineering, and future prospects of these polymeric-nanocomposite materials in agriculture.

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“…In recent times, tremendous research interest has been devoted to the development of novel polymer nanocomposites (PNCs) because of their enhanced properties [1][2][3]. The PNCs reinforced with inorganic nanoparticles (NPs) have potential applications such as optical power limiters, membranes for gas separation, flexible light emitters etc [4,5].…”

Section: Introductionmentioning

confidence: 99%

Enhanced dielectric properties of green synthesized Nickel Sulphide (NiS) nanoparticles integrated polyvinylalcohol nanocomposites*

Reddy

Deshmukh

Kovařík

et al. 2020

Mater. Res. Express

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A green synthesis approach has been adopted to prepare nickel sulphide nanoparticles (NiS NPs) using banana peel extract (BPE) as a reducing and capping agent. Polyvinyl alcohol (PVA)/NiS nanocomposite films were fabricated using a cost-effective solution casting technique by dispersing different contents of NiS NPs (0-3 wt%) in the PVA matrix. Various characterization techniques were employed to analyze the structural, thermal and morphological properties of the PVA/NiS nanocomposite films. Further, the dielectric behaviour of these nanocomposite films was investigated at frequency range 50 Hz-20 MHz and in the temperature range 40°C-140°C. Also, there exists a significant interaction between the polymer matrix and the nanofiller as evident from the notable improvement in the dielectric properties of the nanocomposites. The dielectric constant (ε) value of PVA/NiS nanocomposite film with 3 wt % NiS NPs loading was found to be 154.55 at 50 Hz and at 140°C which is 22 times greater than the dielectric constant value of neat PVA (6.90). These results suggest that NiS NPs were dispersed homogeneously in the PVA matrix.Among various polymers used for the fabrication of PNCs, polyvinyl alcohol (PVA) is most often preferred as a host matrix owing to its excellent film-forming ability, higher dielectric strength, the capability to form strong hydrogen bonding, easy processability, excellent chemical stability, and highly durable nature [17]. PVA has been employed for various applications such as in battery components, packaging, textile applications in the microelectronic industry, electromagnetic interference applications and so on [17,18]. Several research groups reported the dielectric properties of the PVA based nanocomposites [19][20][21]. With this inspiration, in the present study PVA has been chosen as a host polymer to synthesize PVA based nanocomposites. Now a day, more attention has been focussed on metal sulphide nanostructures because of their unique properties and applications [22]. Among these, nickel sulphide (NiS) has been mostly investigated because of its simple production, affordable price and high electronic conductivity [23,24]. It exhibits complicated electrical, optical, structural, compositional and magnetic phase behaviour [25]. Also due to the possession of multi-phases, binary Ni-S systems such as NiS 2 , Ni 3 S 4 , Ni 9 S 8 , Ni 7 S 6 , Ni 6 S 5 , Ni 4 S 3+x , Ni 3 S 2 , and Ni 3+x S 2 have become fascinated materials [26]. NiS NPs exhibit different shapes such as layer-rolled structures, urchin-like nanocrystallites, flower-like architectures, hollow spheres, nanoframes, nanorods, and nanospheres etc [27,28].Recently, increased attention has been given to the green approach for the synthesis of NPs because of its several advantages [29][30][31][32]. For the synthesis of NPs, the plant extracts which serve as reducing/capping agents are considered to be more beneficial than remaining techniques [33]. Several researchers reported the synthesis of metal sulphide NPs through a green synthesis a...

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Synthesis, optimization and applications of ZnO/polymer nanocomposites

Cited by 207 publications

References 295 publications

Effect of nano-ZnO on mechanical and thermal properties of geopolymer

Effect of nano-ZnO on mechanical and thermal properties of geopolymer

Polymeric Nanocomposite-Based Agriculture Delivery System: Emerging Technology for Agriculture

Enhanced dielectric properties of green synthesized Nickel Sulphide (NiS) nanoparticles integrated polyvinylalcohol nanocomposites*

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