Results 81 to 90 of about 967,661 (341)
MODIFICATION OF POLYVINYL ALCOHOL WITH HYDRAZINE
Sen'i Gakkaishi, 1970 A modified polyvinyl alcohol containing 5.25 mol% of hydrazide group in the polymer chain was prepared by the reaction of vinyl acetate-acrylamide copolymer with hydrazine hydrate. Similar polyvinyl alcohol containing 1.05% of nitrogen was readily obtained from commercial polyvinyl acetate by the hydrolysis with hydrazine hydrate.Thermal stability of ...
Ryuji Yamamura +2 more
openaire +3 more sources
Advanced Functional Materials, EarlyView.A Ni‐doped PBSCN20 air electrode is proposed as a promising air electrode material for reversible protonic ceramic cells. An isovalent doping significantly facilitates oxygen vacancy formation and proton uptake while simultaneously reducing the energy barrier for proton migration.
Jiwon Yun +7 more
wiley +1 more source
Advanced Functional Materials, EarlyView.By turning off hydrogen bonds by bulky ethyl cinnamate ester derivatization, softwood kraft lignin can flow under elevated temperatures, providing tough fiber in the melt for high take‐up speed. Subsequently, lignin ethyl cinnamate derivatives are readily stabilized with only dilute nitric acid leading to direct carbonized fiber with outstanding ...
Qi Hua +8 more
wiley +1 more source
Preparation of Polyvinyl Alcohol/Graphene Oxide Composites and Their Adsorption Properties [PDF]
Nature Environment and Pollution Technology, 2020 The polyvinyl alcohol/graphene oxide (PVA/GO) hydrogel was prepared. It was confirmed that the adsorption performance of polyvinyl alcohol/graphene oxide hydrogel composite material was improved, and it does not cause secondary pollution.
Yanyan Dong, Manuel J. Lis Arias, Chengye Hu, Wendan Wu, Liping Liang, Xinlan Mou and Xu Meng
doaj
Advanced Functional Materials, EarlyView.Wrinkling of soft materials, such as polydimethylsiloxane (PDMS), underpins a myriad of technologies. Plasma‐oxidation of PDMS induces spontaneous wrinkling, which is canonically attributed to thermal expansion‐contraction of bilayers. Employing experiments and modelling, it is demonstrated that sorption of water vapor is instead responsible for ...
Zain Ahmad +8 more
wiley +1 more source
Study on Poly(Vinyl Alcohol) CopolymersBiodegradation [PDF]
Memoirs of the Scientific Sections of the Romanian Academy, 2015 In the study the biodegradability of some poly(vinyl alcohol)-g-aspartic acid copolymers was investigated, using Trichotecium roseum fungus. The biodegraded samples were examined after established days of inoculation (3–21 days).
Rodica Lipşa +4 more
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Biochemistry and Biophysics Reports, 2021 Series of sulfonated polymers were evaluated as additives in cell culture media. Some of the compounds, such as sulfated polyvinyl alcohol (PVA), prevented denaturation and loss of basic fibroblast growth factor during cell culture and enhanced human ...
Yoko Masuzawa, Manabu Kitazawa
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Understanding Functional Materials at School
Advanced Functional Materials, EarlyView.This review outlines strategies for effectively teaching nanoscience in schools, focusing on challenges such as scale comprehension and curriculum integration. Emphasizing inquiry‐based learning and chemistry core concepts, it showcases hands‐on activities, digital tools, and interdisciplinary approaches.
Johannes Claußnitzer, Jürgen Paul
wiley +1 more source
BioResources, 2011 Nano-fibrillated cellulose was produced from flax and wheat straw cellulose pulps by high pressure disintegration. The reinforcing potential of both disintegrated nano-celluloses in a polyvinyl-alcohol matrix was evaluated.
Marta Hrabalova +5 more
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Journal of Materials Research and Technology, 2022 With the advantages of good coordination and degradability, chitosan is an ideal polymeric carrier material for heterogeneous catalysts. In this paper, natural polymer chitosan was toughened and modified by blending with polyvinyl alcohol. Then, chitosan-
Kewang Zheng +7 more
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