Results 1 to 10 of about 55,043 (263)
Antibacterial Films Based on PVA and PVA–Chitosan Modified with Poly(Hexamethylene Guanidine) [PDF]
Polymers, 2019 In this study, thin, polymeric films consisting of poly(vinyl alcohol) (PVA) and chitosan (Ch) with the addition of poly(hexamethylene guanidine) (PHMG) were successfully prepared. The obtained materials were analyzed to determine their physicochemical and biocidal properties.
Ewa Olewnik-Kruszkowska +5 more
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Observation of an Injection Dependent Lifetime Effect in Highly Hydrogenated Boron Doped Wafers
SiliconPV Conference ProceedingsThe correlation between hydrogen content and boron-oxygen related degradation is under debate. In this study surface passivated boron doped silicon wafers with different hydrogen content were illuminated at room temperature with three different light ...
Rune Søndenå +3 more
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Crystallinity of PVA Component of PVA-PVC Graft Polymer
Kobunshi Kagaku, 1963 の水溶液中で過硫酸カリを触媒としてPVCを重合する際に, 一部得られるPVA-PVCグラフトポリマーについてPVA成分の結晶性を広角X線回折により検討した。PVA成分の結晶性は比較的高いが結晶回折ピークの半価幅は著しく拡大している。これはPVA成分の結晶が枝ポリマーであるPVCの存在によって不完全な, パラクリスタリン状態で存在することを示すものと考えられる。結晶化度は成分分率でほぼ決まりグラフト率の大きいものほど低い値を示す。結晶回折ピークの半価幅は枝ポリマーの数に影響される。高温での熱処理による結晶化度の変化は, ブレンドおよびホモPVAと異なった傾向を示す。
Shirakashi, Kan +2 more
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Magazine of Civil Engineering, 2021 Autonomous sealing of cracks in concrete through bacteria-induced calcification has become a topic of great concern in the last two decades. This paper is focused on two main issues of the so-called bio-based self-healing concrete, i.e. protection of the
Schreiberova Hana +7 more
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Studying the Structural and Optical properties of PVA doped with CuO and FeCl 3 composites films [PDF]
Engineering and Technology Journal, 2015 In this research, we are studying structural and optical properties of film (PVA doped with CuO and FeCl3).The(CuO)with concentration (7%),and (FeCl3) with different concentrations of FeCl3 (3, 7, and 9) %,preparing by casting method with thickness (25±5)
Aliyah Abdul Muhsen Shehab +2 more
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Preparation and characterization of PVA/PASA-PVA/PDDAB bipolar membrane [PDF]
Journal of the Brazilian Chemical Society, 2009 Bipolar membranes (BMP) were prepared by bonding together separate anion and cation exchange membrane. For the preparation of the cation selective layer, aqueous solution of PVA [poly(vinyl alcohol)], and PASA [poly(anetholesulfonic acid sodium salt)], where the ratio of PVA/PASA was changed for the control of the membrane charge density, were cast for
Espinoza-Gómez, Heriberto +3 more
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Curcumin nanoparticles incorporated in PVA/collagen composite films promote wound healing
Drug Delivery, 2020 Skin repair remains a common problem in plastic surgery. Wound dressing plays an important role in promoting local skin healing and has been widely studied.
QingQing Leng +9 more
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Design of composite membrane emergency drainage device for floating roof tank
You-qi chuyun, 2020 Emergency drainage device is an important safety device for floating roof tank to timely drain the overloaded water in case of emergency. In practical application, a large amount of maintenance work is required for the commonlyused float type emergency ...
Bin PU +3 more
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Jurnal Kimia Sains dan Aplikasi, 2023 Degradable plastic can be used as a substitute for commercial plastic. Degradable plastic made from starch with zinc oxide (ZnO) catalyst and polyvinyl alcohol (PVA) has biodegradable properties.
Rozanna Dewi, Novi Sylvia, Medyan Riza
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AI image enhancement for failure analysis in 3D quantum information technology
Scientific Reports3D integration and miniaturization techniques get more widely used in conventional integrated circuits but also represent crucial ingredients for future quantum computing devices.
Raphael Wilhelmer +9 more
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