Nattakan Soykeabkaew; Phattharasaya Rattanawongkun; Nutchanad Kunfong; Supattra Klayya; Nattaya Tawichai; Uraiwan Intatha
Abstract
The nanofibrillated celluloses (NFCs) from banana pseudostem (BA) and pineapple leaf (PA) were prepared by soda pulping pretreatment and microfluidization. TEM and XRD results revealed a slight diverse in features of both NFCs. Their average diameter was 15.5-20.0 nm with ~1.7 µm average length. ...
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The nanofibrillated celluloses (NFCs) from banana pseudostem (BA) and pineapple leaf (PA) were prepared by soda pulping pretreatment and microfluidization. TEM and XRD results revealed a slight diverse in features of both NFCs. Their average diameter was 15.5-20.0 nm with ~1.7 µm average length. Each NFC (1-5 wt%) was integrated into the bagasse microfiber (BG) papers. From SEM images, it was showed that the voids between the microfibers were filled up and bridged by NFCs, hence, greatly increasing fiber bonded area and remarkably reinforcing the papers as a result. The BG/NFC-BA 5 wt% sheet exhibited to be the strongest one. Then again, the BG/NFC-PA 5 wt% sheet (highly elongated before breaking) was shown to be the toughest one. This can bring a conclusion that NFCs can effectively be used to improve quality of the microfiber papers in many aspects. In addition, it was also found that the source of NFCs showed a noticeable influence on the paper strength while the quantity of added NFCs was more critical to the paper toughness. Therefore, a selection of both suitable source and usage quantity of NFCs for desired performance of papers and other related products has to be considered beforehand. Copyright © VBRI Press
Neha Singh; Jyoti Srivastava;Pawan K. Khanna; Priyesh V. More
Abstract
The article describes an efficient method for the preparation of silver nanoparticles ink for its application in printed electronics. The effective formulation using polyvinylpyrrolidone (PVP) and triethylamine leads to highly stable silver nano-ink. The spin-coated silver nanoparticulate films fabricated ...
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The article describes an efficient method for the preparation of silver nanoparticles ink for its application in printed electronics. The effective formulation using polyvinylpyrrolidone (PVP) and triethylamine leads to highly stable silver nano-ink. The spin-coated silver nanoparticulate films fabricated using the as-prepared nano-ink exhibit bulk-like conductivity at moderate annealing temperature of 60°C -100°C. Additionally; pen-on-paper type of conventional writing is successfully demonstrated with modifying the formulation of such nano-inks. The viscosity of as-prepared Ag nano-ink can be easily altered by varying the concentration of binders and solvents to suit its end applications. Such flexibility coupled with high conductivity and amphiphilic nature makes this silver nano-ink highly useful in various advanced printing techniques.
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