Facile one-step construction of covalently networked, self-healable, and transparent superhydrophobic composite films

2018 ◽  
Vol 445 ◽  
pp. 368-375 ◽  
Author(s):  
Yujin Lee ◽  
Eun-Ah You ◽  
Young-Geun Ha
Keyword(s):  
2009 ◽  
Vol 517 (19) ◽  
pp. 5621-5624 ◽  
Author(s):  
Eilidh Morrison ◽  
David Gutiérrez-Tauste ◽  
Concepción Domingo ◽  
Elena Vigil ◽  
José A. Ayllón

2020 ◽  
Vol 59 (7) ◽  
pp. 2544-2544
Author(s):  
Wei Shi ◽  
Sanyin Qu ◽  
Hongyi Chen ◽  
Yanling Chen ◽  
Qin Yao ◽  
...  

2018 ◽  
Vol 9 ◽  
pp. 2980-2988 ◽  
Author(s):  
Qian Zhang ◽  
Qiyu Gu ◽  
Fabrice Leroux ◽  
Pinggui Tang ◽  
Dianqing Li ◽  
...  

An elegant and efficient approach consisting in the co-intercalation of stabilizing molecular anions is described here. The thermal stabilizer calcium diethyl bis[[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]phosphonate] (Irganox 1425, MP-Ca) and a photo-oxidation stabilizer (hindered amine light stabilizer, HALS) are co-intercalated into the interlayer regions of layered double hydroxides (LDH) in a one-step coprecipitation. These hybrid organic–inorganic materials are successively dispersed in polypropylene to form H n M n ′-Ca2Al/PP composite films (with H = HALS and M = MP) through a solvent casting method. The corresponding crystalline structure, chemical composition, morphology as well as the resistance against thermal aging and photo-oxidation are carefully investigated by various techniques. The results show that the powdered H n M n ′-Ca2Al-LDHs hybrid materials have a much higher thermal stability than MP-Ca and HALS before intercalation. In addition, the H n M n ′-Ca2Al/PP composites exhibit a higher overall resistance against thermal degradation and photo-oxidation compared to LDHs intercalated with only HALS or MP. This underlines the benefit of the co-intercalation. The co-intercalated LDH materials pave a new way in designing and fabricating high-performance multifunctional additives for polymers.


2021 ◽  
Author(s):  
Arisara Panthawan ◽  
Nidchamon Jumrus ◽  
Panupong Sanmuangmoon ◽  
Winai Thongpan ◽  
Tewasin Kumpika ◽  
...  

Abstract Copper-iron (Cu-Fe) oxide composite films were successfully deposited on quartz substrate by a facile sparking process. The nanoparticles were deposited on the substrate after sparking off the Fe and Cu tips with different ratios and were then annealed at different temperatures. The network particles was observed after annealed the film at 700°C. Meanwhile, XRD and SAED patterns of the annealed films at 700°C consisted of a mixed phase of CuO, γ-Fe2O3, CuFe2O4 and CuFe2O. The film with a lowest energy band gap (Eg) of 2.56 eV was observed after anneal at 700°C. Interestingly, the optimum ratio and annealing temperature show highly photocatalytic activity than annealed TiO2 at 500 and 700°C. This is a novel photocatalyst which can be replace TiO2 for photocatalytic applications in the future.


Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 1
Author(s):  
Yidong Zhang ◽  
Chao Liu ◽  
Meiyan Wu ◽  
Zhenqiu Li ◽  
Bin Li

Polylactic acid (PLA) films with good sustainable and biodegradable properties have been increasingly explored recently, while the poor mechanical property of PLA limits its further application. Herein, three kinds of nano-sized cellulose formate (NCF: cellulose nanofibril (CNF), cellulose nanocrystal (CNC), and regenerated cellulose formate (CF)) with different properties were fabricated via a one-step formic acid (FA) hydrolysis of tobacco stalk, and the influence of the properties of NCF with different morphologies, crystallinity index (CrI), and degree of substitution (DS) on the end quality of PLA composite film was systematically compared. Results showed that the PLA/CNC film showed the highest increase (106%) of tensile strength compared to the CNF- and CF-based films, which was induced by the rod-like CNC with higher CrI. PLA/CF film showed the largest increase (50%) of elongation at the break and more even surface, which was due to the stronger interfacial interaction between PLA and the CF with higher DS. Moreover, the degradation property of PLA/CNF film was better than that of other composite films. This fundamental study was very beneficial for the development of high-quality, sustainable packaging as an alternative to petroleum-based products.


1996 ◽  
Vol 461 ◽  
Author(s):  
Gong Ke-Cheng ◽  
Ma Wen-Shi

ABSTRACTThe highly electroactive thiokol rubber (TR)/ conjugated polymer (eg. polyaniline (PAn) or polypyrrole (PPy)) composite films were prepared by electropolymenzation deposition via one-step process in the electrolytic solutions containing aniline or pyrrole and TR oligomer. The electrocatalysis of PAn or PPy for the electrodepolymerization (reduction)- electropolymenzation (oxidation) reaction of TR in the interface between PAn or PPy and TR is determined by cyclic voltammograms. The differeme between the oxidation potential and the reduction potential is 0.05V and 0.36V or less for TR/PAn and TR/PPy composite films, respectively The chemical bands between the nitrogen atoms of PAn or PPy and the mercaptan groups of TR (oligomer) are formed in the electropolymenzation process that is indicated by XPS. The conductivities of TR/PAn and TR/PPy composite films and the stability of the cells consisting of those films are remarkably improved after electrochemical reduction with addition of a suitable conducting carbon black.


Nano Energy ◽  
2017 ◽  
Vol 38 ◽  
pp. 576-584 ◽  
Author(s):  
Wanglian Liu ◽  
Kuangzhou Du ◽  
Lu Liu ◽  
Jinxuan Zhang ◽  
Zhiwei Zhu ◽  
...  

2018 ◽  
Vol 30 (4) ◽  
pp. 045707 ◽  
Author(s):  
Zexin Yu ◽  
Hatem Moussa ◽  
Bilel Chouchene ◽  
Meimei Liu ◽  
Raphaël Schneider ◽  
...  
Keyword(s):  

2015 ◽  
Vol 345 ◽  
pp. 175-181 ◽  
Author(s):  
Federico Cesano ◽  
Gaia Fenoglio ◽  
Luciano Carlos ◽  
Roberto Nisticò

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