دانلود رایگان مقاله لاتین سلولز نانوفیبردار از سایت الزویر
عنوان فارسی مقاله:
سلولز نانوفیبردار - پلیوینیلپیرولیدون - نانوذرات نقره فیلم با خواص هدایت الکتریکی
عنوان انگلیسی مقاله:
Novel nanofibrillated cellulose/polyvinylpyrrolidone/silver nanoparticles films with electrical conductivity properties
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Nowadays, metal nanoparticles are considered as potential materials due to their various applications (Khalil et al., 2015; Rubilar et al., 2013; Stark, Stoessel, Wooleen, & Hafner, 2015) including electronics industry with their small size and precision of the electronic components. (Mishra, Dabrowski, Vij,Mishra, & Dhar, 2015; Park & Kim, 2014; Shen, Zhang, Huang, Xu, & Song 2014). Particularly, silver nanoparticles (AgNPs) havemany applications; they can be used as antistatic materials, switching devices, conductive inks and adhesives for different electronics etc. . . (Bouvree, Feller, Castro, Grohens, & Rinaudo 2009; Deng et al., 2010; Thostenson & Chou, 2006). Various methods were used to synthesize metal nanoparticles including chemical, physical and thermal ones (Bae, Nam, & Park, 2002; Smetana, Klabunde, & Sorensen 2005). In addition, reduction either chemically, photochemically (Mallicka, Witcombb, & Scurrella, 2005) or electrochemically (Liu & Lin, 2004; Pinto et al., 2009) can be utilized. The chemical reduction methodis one of the most common ones to prepare metal nanoparticles due to its simplicity, facility and abundance in production. Upon utilizing a strong reductant on silver nitrate in an aqueous reaction medium; such as sodium borohydride or hydrazine, silver nanoparticles (AgNPs) result from this process but a disadvantage may arise which is the aggregation of the aforementioned particles and losing their nanostructure. Silver nanoparticles can go through and combine with natural substrates as cotton and cellulosic materials. This can be achieved via reduction methods including the chemical or biological ones (Duran, Marcato, De Souza, Alves, & Esposito, 2007; Ravindra, Mohan, Reddy, & Raju, 2010). Polyvinylpyrrolidone (PVP) can be considered as an important ingredient in the synthesis of metal nanoparticles (MNPs). It has a role as a stabilizing agent in polar solvents and supports in determining the form of the prepared MNPs (Xia, Zeng, Zhang, Moran, & Xia, 2012). PVP has been utilized in preparing silver nanoparticles. These nanoparticles can disperse easily in PVP which in turn can act as protective layer around AgNPs preventing the aggregation that may occur (Zhang, Zhao, & Hu, 1996). Moreover, polyvinylpyrrolidone (PVP) performs an important role in the preparation of various composites (Zhao, Zhang, Du, Li, & Zou, 2015). It has been employed in preparing PVP/Fe3O4 (Wang, Li, Wang, & Wei, 2011). The effect of PVP was studied in investigating the electrical properties of polyacrylonitrile (PAN) composite nanofibers combined with silver nitrate (Ucar et al., 2015). Hence, the aforementioned nanocomopsites loaded with PVP showed the ability to be used as antistatic materials. Nanofibrillated cellulose (NFC) is an interesting natural-based polymeric material with unique properties such as ability for making transparent films with high tensile strength properties. There is a recent interest in using films from nanofibrillated cellulose in flexible electronics. Cellulose itself is a dielectric material and has been used for many years for this purpose. Rendering cellulose electrically conductive material adds a new functionality to it as well as new applications. This has been carried out by mixing it with nanostructured carbon (carbon nanotubes, graphene, reduced graphene oxide) (Deng et al., 2013; Salajkova, Valentini, Zhou, & Berglund, 2013; Zheng, Cai, Ma, & Gong, 2015), metal nanoparticles (Hao, Wang, Shao, & Yang, 2015;Yang & Li, 2015), conductive polymers, grafting its surface with conductive polymers (Jradi, Bideau, Chabot, & Daneault, 2012; Mattoso et al., 2009; Wang et al., 2016), or depositing a conducting material on the surface of cellulose (Wang et al., 2014). Mixing cellulose nanofibers with conductive polymers to prepare electrically conductive materials requires good compatibility between cellulose and the added polymer. Polyvinylpyrrolidone is a water soluble polymer and thus has excellent compatibility with cellulose. Although PVP films have perfect electrical conductivity properties but they suffer from low mechanical properties. Thus, nanocomposites containing cellulose nanofibers and PVP are able to produce novel materials with the unique properties extended from both of them. Surprisingly, few studies have been conducted so far on preparation of nanocomposites between cellulosic nanomaterials (cellulose nanocrystals or cellulose nanofibers) and PVP (Going, Sameoto, & Ayranci, 2015). Conductive polymer composites (CPC) can be fabricated by adding conductive filler into polymer matrix. The most important advantage of CPC is thattheir electrical properties are close to those of fillers, even as their mechanical characteristics and processing are typical to plastics. Those composites have numerous benefits over the traditional conductive materials, inclusive processability, flexibility, light weight, ability to absorb mechanical shocks and low cost. CPC may be used as antistatic materials, switching devices, cables, transducers and gas sensors. Moreover, CPC can be employed as devices for electromagnetic radiation shielding and electrostatic discharge (Park, Thielemann, Asbeck, & Bandaru, 2010; Rashid, Ariffin, Akil, & Kooi, 2008; Liu et al., 2007). There are growing demands to decrease the thickness and diameter of conductive films. To preserve the processability of CPC with low cost, a minimum quantity of filler is mostly preferable. However by introducing an immiscible or partially miscible polymer to another one loaded with a conductive filler, a conductive polymer composite with minimal filler content can be obtained (Arbatti, Shan, & Cheng, 2007; Dang, Yu, Yao, & Liao, 2013). The aim of this study is to utilize the flexibility and high tensile strength of nanofibrillated cellulose, electrical conductivity of PVP and silver nanoparticles in synthesizing nanocomposites in the forms of films with appropriate flexibility and tensile strength properties as well as electrical conductivity.
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کلمات کلیدی:
Eco-friendly Polymer Nanocomposites: Processing and Properties https://books.google.com/books?isbn=8132224701 Vijay Kumar Thakur, Manju Kumari Thakur - 2015 - Technology & Engineering J Biol Eng 3:1–9 Klasen HJ (2000) A historical review of the use of silver in the ... battery cells through a papermaking process based on nano-fibrillated cellulose. ... Electrospun nanofibrous structure: a novel scafold for tissue engineering. ... dispersed ZnO quantum dots in polyvinylpyrrolidone nanotubes prepared by a ... Khalil AM[au] - PubMed Result jpet.aspetjournals.org/external-ref?access_num=Khalil%20AM&link_type... ... Hassan ML, Ward AA. Novel nanofibrillated cellulose/polyvinylpyrrolidone/silver nanoparticles films with electrical conductivity properties. Carbohydr Polym. [PDF]World's largest Science, Technology & Medicine Open Access book ... https://www.intechopen.com/download/pdf/37597 namely vegetable cellulose (VC), bacterial cellulose (BC) and nanofibrillated cellulose .... pyrrolidone (PVP) as colloidal stabilizers has been investigated [58]. ... prepared by using the in situ reduction of a silver(I) salt in the presence of cotton ... [PDF]Download (PDF) - COST Action FP1205 costfp1205.com/wp-content/uploads/2017/04/18.-Worakans-presentation.pdf display. • The films made from: pure BC, BC/SF, and BC/SF/PVP ... "Novel nanofibrillated cellulose/polyvinylpyrrolidone/silver nanoparticles films with electrical ... [PDF]Cellulosic material Properties and industrial potential - COST FP1205 costfp1205.com/wp-content/uploads/2017/04/cost-abstract-book-2017_v2.1.pdf Novel nanofibrillated cellulose/polyvinylpyrrolidone/ silver nanoparticles films with electrical conductivity properties. Carbohydrate Polymers, 157, 503-511. Novel method of ordering silver nanowires for synthesizing flexible ... iopscience.iop.org/article/10.1088/2053-1591/3/11/115022/meta by S Liu - 2016 - Related articles Nov 18, 2016 - In this research, ordered silver nanowires (NWs) were transferred to flexible, freestanding nanofibrillated cellulose (NFC) thin film. .... and Song L 2004 Machinable long PVP-stabilized silver nanowires Chemistry 10 4817–21.
