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Adriana Cristina Wenceslau, Adley Forti Rubira, Edvani Curti Muniz
Pág. 233 - 241
IPN hydrogels based on chemically modified poly(vinyl alcohol) (or PVA-Ma), with different degrees of substitution (DS), and poly(N-isopropylacrylamide) (or PNIPAAm) were obtained and characterized through measures of LCST, swelling ratio and mechan...
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Shaotian Zhang, Dafu Wei, Xiang Xu and Yong Guan
It is still crucial to improve the mechanical characteristics of polyvinyl alcohol (PVA) films without resorting to chemical cross-linking. In this study, boric acid (BA) was used to enhance the mechanical characteristics of PVA films while maintaining t...
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Lala Gahramanli, Mustafa Muradov, Goncha Eyvazova, Mahammad Baghir Baghirov, Sevinj Mammadyarova, Gunel Aliyeva, Elman Hajiyev, Faig Mammadov and Stefano Bellucci
The present research involves producing graphene oxide (GO) using the Hummers method, generating a composite using GO and PVA, and analyzing these composites? structural and optical characteristics. PVA and GO were used in varied percentages to deal with...
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Mohd Aizuddin Salihfudin
Pág. 8
Carrageenan, CAR are the natural occurring polysaccharides and have desirable biocompatibility with biological systems especially in biomedical fields. But, efforts in developing the carrageenan based nanofibers remain unexplored due to its fabrication l...
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Sherrine Aruldass
Pág. 10
Polyvinyl Alcohol (PVA) is a biodegradable resemblance of natural polymers which is easily degraded by the biological organisms. PVA have established noteworthy applications in several industries. PVA is essentially synthesized via hydrolysis of Polyviny...
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Valerii Kotok,Vadym Kovalenko
Pág. 58 - 65
Films based on nickel (II) oxides and hydroxides are used in electrochromic cells as one of the active materials that change their optical characteristics under the action of an electric current. Electrochemical deposition, due to which composite films o...
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Lijuan Li, Fang Xing, Zhijun Xu, Wang Chen, Wuxin Chen and Yongquan Li
The feasibility of PVA fiber rubber concrete modified by modifier in the structure was investigated using the portal frame as the research object. The basic mechanical properties of modified PVA rubber concrete materials were tested mechanically first, a...
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Nisreen S. Mohammed, Bashar Abid Hamza, Najla?a H. AL-Shareef and Husam H. Hussein
In several areas worldwide, the high cost and shortage of natural resources have encouraged researchers and engineers to explore the serviceability and feasibility of using recycled aggregates in concrete mixtures, substituting a normal aggregate percent...
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Johanna Marcela Flórez Castillo, Mercedes Perullini, Matias Jobbágy, Herminsul de Jesús Cano Calle
Pág. 12 - 13
La liberación controlada de antibióticos utilizando biomateriales ha despertado un gran interés para aplicaciones de terapias locales en el campo clínico. Las matrices poliméricas se han convertido en una opción en el desarrollo de nuevos sistemas de lib...
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Zhao Yang, Jiankun Li, Yilan Zhong and Xiaolong Qi
Although shape memory alloy/Polyvinyl alcohol (SMA/PVA) hybrid fiber reinforced cementitious composites, (SMA/PVA-ECC) exhibit excellent crack closure and deformation recovery capabilities, however, the research on their fundamental mechanical properties...
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Muhammad Akbar Malik, Manas Sarkar, Shilang Xu and Qinghua Li
This exertion introduces polyvinyl alcohol fiber/silica nanoparticles (poly vinyl alcohol (PVA)/SiO2 NPs) in the fly ash-based geopolymer at ambient curing temperature. The present study aims at investigating the structural properties (compressive, bond ...
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Weiping Wang, Chongrui Wang, Jinxiang Yu and Bin Wu
Using the VORTEX v. 10. 5.0.0, population viability analysis (PVA) was performed for Yangtze finless porpoise (YFP, Neophocaena asiaeorientalis) in the highest density section between Hukou and Meilong section (HMS) of the Yangtze River. Baseline model s...
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Lianghui Li, Bixiong Li, Zhiwen Wang, Zhibo Zhang and Othman Alselwi
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Asmaa Selim, András József Tóth, Eniko Haáz, Dániel Fózer, Péter Mizsey
Pág. 377 - 383
Thermal crosslinking sequential method applied for DN-PVAs generation efficiently. The swelling measurements investigated that the hydrophilicity of the membrane decreases because of the collaboration of the second thermal crosslinked PVA matrix. Th...
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Asmaa Selim, András József Tóth, Eniko Haáz, Dániel Fózer, Péter Mizsey
Pág. 85 - 92
The features of pervaporation are continuously improved with the production of more and more efficient membranes. In our present study, silver nanoparticles are in-situ generated in a poly (vinyl alcohol) using solution-casting in order to enhance its ca...
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Nedjla Amri, Djamila Ghemati, Nadia Bouguettaya, Djamel Aliouche
Pág. 179 - 189
This study involved preparation of hybrid polymer systems based on chitosan-poly(vinyl alcohol) (PVA) blends and modified Montmorillonite. These structures were characterized through microscopy and infrared spectroscopy; swelling measurements were perfor...
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Wenxiu Wang, Hui Xu, Jian Chen, Yuanfang Shen, Imre Bertóti, Xinli Guo, Xiangru Shi, Zuhair Agab Elsiddig
Pág. 8 - 20
Graphene oxide foams with a wide range of poly (vinyl alcohol) contents were synthesized by freeze casting, and then thermally reduced at 300ºC in argon atmosphere. Their thermal stability, microstructure, composition and chemical states of constituents,...
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Jianchao Wu, Changhang Xu, Baoxin Qi and Francisco C. Robles Hernandez
The main purpose of the current research is to pilot study the impact damage detection in a beam structure using infrared thermography. In this study, a beam structure, made of polyvinyl alcohol fiber reinforced engineering cementitious composite (PVA-EC...
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Huan Liu and Baoqi Zuo
Noise pollution has become one of the four major pollution issues in the world and has drawn much attention recently. Controlling the sound source and using sound-absorbing materials reasonably is considered an effective way to reduce noise. Due to the h...
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Yaowen Liu, Shuyao Wang, Wenting Lan and Wen Qin
Strawberry packaging based on four different chitosan?poly(vinylalcohol) blend films with chitosan contents of 0 wt %, 20 wt %, 25 wt %, and 30 wt % was tested. The samples were stored at 18 ± 2 °C and 60% ± 5% relative humidity for six days. Strawberry ...
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