Results 31 to 40 of about 52,128 (263)
A Study of the Effect of Starch Content on the Water Absorption of PVA/starch Blends [PDF]
Engineering and Technology Journal, 2021 The present work aims to study physical tests such as the water absorption tests of PVA; PVA/corn starch blends at different mass percent (25, 30, 35, 40, and 50%) of corn starch after immersion in distilled water for ten minutes.
Bushra H. Musa, Nahida J. Hameed
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Fabrication of Antibacterial Poly(vinyl alcohol) Microfibers Mat for Wound Dressing Application [PDF]
علوم و تکنولوژی پلیمر, 2016 The bed of an open wound is prone to infection because of good conditions for microorganisms to grow in a moist, warm and nutritious environment. Using an antibacterial wound dressing, the healing of the wound can be accelerated. Antibacterial properties
Mohamadreza Noruzi +2 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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The Study of the Swelling Degree of the PVA Hydrogel with varying concentrations of PVA
Journal of Physics: Conference Series, 2022 Abstract Hydrogel is composed of a three-dimensional network of hydrophilic polymers and can swell when placed in an aqueous media. Polyvinyl alcohol (PVA) is a common polymer used to produce hydrogels because it has biocompatibility, non-toxicity, chemical stability, low cost, and excellent mechanical strength.
Nabila Asy-Syifa +5 more
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Journal of Natural Fibers, 2020 This research studied the effect of three types of starch on the properties of thermoplastic starch (TPS)–Poly (vinyl alcohol) (PVA)–cellulose nanocomposite films.
Nurmalisa Lisdayana +3 more
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Jurnal Kimia Sains dan Aplikasi, 2022 A chitosan membrane modified with chloroacetic acid with heparin (hep) and polyvinyl alcohol (PVA) has been successfully prepared. Chitosan was modified with chloroacetic acid through a nucleophilic substitution reaction to form N-carboxyl methyl ...
Shihandhanu Primadian Taqwa +2 more
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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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Effects of Ambient Temperature and Needle to Collector Distance on PVA Nanofibers Diameter Obtained From Electrospinning Technique [PDF]
Engineering and Technology Journal, 2017 Electro spinning is regarded as an active technique for producing biomimetic scaffolds used in tissue engineering applications from synthetic and natural polymers.
A.R. Jabur, L.K. Abbas, S.M. Muhi Aldain
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Materiales de Construccion, 2020 This study is a preliminary attempt to present the preparation and the first time a κ-carrageenan/PVA/eggshell nanostructure is used as a novel biodegradable and homogeneous nanostructure in cement composition.
I. Sanrı-Karapınar +6 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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