scholarly journals Impact of Magnesium Salt on the Mechanical and Thermal Properties of Poly(vinyl alcohol)

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3760
Author(s):  
Riza Asmaa Saari ◽  
Muhammad Shahrulnizam Nasri ◽  
Takumitsu Kida ◽  
Masayuki Yamaguchi
Keyword(s):  
Vinyl Alcohol ◽  
Magnesium Salt ◽  
Poly Vinyl Alcohol ◽  
Mechanical And Thermal Properties ◽  
Structure And Properties ◽  
Structure Of Water ◽  
Dipole Interactions ◽  
Strength Of Interaction ◽  
Magnesium Salts ◽  
Anion Species

The effects of magnesium salts with various anion species on the structure and properties of a poly(vinyl alcohol) (PVA) film were studied. The glass transition temperature of the PVA film increased following the addition of a magnesium salt. Furthermore, the salt greatly enhanced the modulus and yield stress and reduced the crystallinity of the film. These effects were attributed to the strong ion–dipole interactions between the magnesium salts and the PVA chains. The strength of interaction, i.e., the reduction of segmental motions, depended on the anion species in the following order: Mg(ClO4)2, MgBr2, MgCl2, Mg(CH3COO)2, and MgSO4. The order corresponded to the Hofmeister series, which predicts the ability to break the structure of water.

Structure and Properties of Starch/Poly (vinyl alcohol) Film Modificated by Different Inorganic Salts

2019 ◽  
Vol 4 (2) ◽  
pp. 600-607 ◽  
Author(s):  
Wenhao Du ◽  
Ting Jiang ◽  
Mengke Shi ◽  
Zhaojie Yang ◽  
Xi Zhang
Keyword(s):  
Vinyl Alcohol ◽  
Inorganic Salts ◽  
Poly Vinyl Alcohol ◽  
Structure And Properties

scholarly journals Mechanical and Thermal Properties of Poly(vinyl alcohol) Crosslinked by Borax

1976 ◽  
Vol 8 (1) ◽  
pp. 131-133 ◽  
Author(s):  
Hiroshi Ochiai ◽  
Sachiko Fukushima ◽  
Miyuki Fujikawa ◽  
Hitoshi Yamamura
Keyword(s):  
Thermal Properties ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Mechanical And Thermal Properties

Structure and Properties of Poly(vinyl alcohol) Hydrogels Obtained by Freeze/Thaw Techniques

2005 ◽  
Vol 222 (1) ◽  
pp. 49-64 ◽  
Author(s):  
Rosa Ricciardi ◽  
Finizia Auriemma ◽  
Claudio De Rosa
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Structure And Properties ◽  
Freeze Thaw

Effect of banana fibers and plasticizer on melt processing of poly(vinyl alcohol)

2017 ◽  
Vol 37 (4) ◽  
pp. 335-343 ◽  
Author(s):  
Yottha Srithep ◽  
Dutchanee Pholharn ◽  
Onpreeya Veang-in ◽  
Suphan Yangyuen
Keyword(s):  
Mechanical Properties ◽  
Crystallization Temperature ◽  
Vinyl Alcohol ◽  
Tensile Modulus ◽  
Melt Processing ◽  
Water Soluble ◽  
Poly Vinyl Alcohol ◽  
Mechanical And Thermal Properties ◽  
Melt Blending ◽  
Banana Fibers

Abstract Poly(vinyl alcohol) (PVOH) resin is one of the most widely used water-soluble biodegradable polymer. Because of thermal degradation, PVOH exhibits limited melt processing and lacks moldability. The effects of adding glycerol as plasticizer and banana fibers (BF) to PVOH on its moldability and mechanical property were investigated. Melt blending of PVOH with glycerol and/or BF was performed in an internal mixer. The blended materials were then compression molded to produce tensile specimens. Various characterization techniques were employed to study the mechanical properties, compatibility, and crystallization behavior of the PVOH blends. By melt blending with glycerol, PVOH could be processed but decreased the tensile modulus, tensile strength, and crystallization temperature. Furthermore, the addition of BF enhanced the mechanical and thermal properties and crystallization temperature of plasticized PVOH due to compatibility between the two components. Apart from enhancing the mechanical properties and thermal stability, the incorporation of BF can reduce the production cost.

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