Combined effect of relative humidity and temperature on dynamic viscoelastic properties and glass transition of poly(vinyl alcohol)

2013 ◽  
Vol 130 (5) ◽  
pp. 3161-3167 ◽  
Author(s):  
Hongjiu Hu ◽  
Xiaolong Zhang ◽  
Yaolong He ◽  
Zhan-sheng Guo ◽  
Junqian Zhang ◽  
...  
Keyword(s):  
Glass Transition ◽  
Relative Humidity ◽  
Vinyl Alcohol ◽  
Viscoelastic Properties ◽  
Combined Effect ◽  
Poly Vinyl Alcohol

Glass transition and crystallization of poly(vinyl alcohol)-g-poly(methyl methacrylate) graft copolymers

Polymer ◽  
1994 ◽  
Vol 35 (14) ◽  
pp. 3122-3126 ◽  
Author(s):  
Yingming Yao ◽  
Lizhi Liu ◽  
Hong Li ◽  
Tianru Fang ◽  
Enle Zhou
Keyword(s):  
Glass Transition ◽  
Methyl Methacrylate ◽  
Vinyl Alcohol ◽  
Graft Copolymers ◽  
Poly Vinyl Alcohol ◽  
Poly Methyl Methacrylate

Poly(vinyl alcohol)−Borate Hydro/Cosolvent Gels: Viscoelastic Properties, Solubilizing Power, and Application to Art Conservation†

Langmuir ◽  
2009 ◽  
Vol 25 (15) ◽  
pp. 8656-8662 ◽  
Author(s):  
Emiliano Carretti ◽  
Scilla Grassi ◽  
Manuela Cossalter ◽  
Irene Natali ◽  
Gabriella Caminati ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Viscoelastic Properties ◽  
Poly Vinyl Alcohol ◽  
Art Conservation ◽  
Solubilizing Power

Viscoelastic Properties of Poly(vinyl alcohol)/Alginate Snake-Cage Hydrogels and Interpenetrating Hydrogels.

1992 ◽  
Vol 24 (4) ◽  
pp. 395-404 ◽  
Author(s):  
Masakatsu Yonese ◽  
Kazuhiko Baba ◽  
Hiroshi Kishimoto
Keyword(s):  
Vinyl Alcohol ◽  
Viscoelastic Properties ◽  
Poly Vinyl Alcohol

Glass Transition Behavior of Clay Aerogel/Poly(vinyl alcohol) Composites

2006 ◽  
Vol 39 (19) ◽  
pp. 6537-6545 ◽  
Author(s):  
Suneel Bandi ◽  
David A. Schiraldi
Keyword(s):  
Glass Transition ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Transition Behavior

Electrical Properties of Poly(Vinyl Alcohol) Complexed with Phosphoric Acid

1988 ◽  
Vol 135 ◽  
Author(s):  
Ke-Cheng Gong ◽  
Huang Shou-Cai
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Electrical Properties ◽  
Phosphoric Acid ◽  
Vinyl Alcohol ◽  
Impedance Measurement ◽  
Poly Vinyl Alcohol ◽  
Promising Candidate ◽  
Polarization Experiment

AbstractThe electrical properties of poly(vinyl alcohol) complexed with phosphoric acid have been studied. It is found that the conductivity increases with the concentration of the acid, and also increases with time if the sample is exposed to the air, which is interpreted in terms of glass transition temperature. A.C. impedance measurement and polarization experiment show that this proton-conducting polymer is a promising candidate for electrochromic display. It is also found that some plasticizers, such as glycerol and ethylene-glycol are effective for improving its conductivity.

Viscoelastic properties of poly(vinyl alcohol) hydrogels and ferrogels obtained through freezing–thawing cycles

Polymer ◽  
2004 ◽  
Vol 45 (16) ◽  
pp. 5543-5549 ◽  
Author(s):  
Rebeca Hernández ◽  
Aurélie Sarafian ◽  
Daniel López ◽  
Carmen Mijangos
Keyword(s):  
Vinyl Alcohol ◽  
Viscoelastic Properties ◽  
Poly Vinyl Alcohol

Morphology and Viscoelastic Properties of Poly(Vinyl Chloride)/ Poly(Vinyl Alcohol) Incompatible Blends

2007 ◽  
Vol 15 (5) ◽  
pp. 371-377
Author(s):  
Kazuma Takeuchi ◽  
Akihiro Kamaguchi ◽  
Muneaki Nabeta ◽  
Syuji Fujii ◽  
Yoshinobu Nakamura ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Vinyl Chloride ◽  
Vinyl Alcohol ◽  
Viscoelastic Properties ◽  
Solution Method ◽  
Poly Vinyl Alcohol ◽  
Powder Method ◽  
Poly Vinyl Chloride ◽  
Mixing Method ◽  
Aqueous Solution Method

The effects of the pre-mixing method and degree of saponification poly(vinyl alcohol) (PVA) on the morphology of poly(vinyl chloride) (PVC)/PVA blends were investigated. Two pre-mixing methods were employed: a powder method and an aqueous solution method. In the powder method, both components were blended in powder form before melt kneading using a mixing roll. In the aqueous solution method, the PVC powder was added to an as-prepared PVA aqueous solution, followed by drying and then pounding before melt kneading. In the case of PVA with a degree of saponification of 98 mol%, PVA domains several hundred μm across were dispersed in the PVC matrix in the powder method system, whereas finer PVA domains with sizes ranging from sub μm to several μm were observed in the aqueous solution method. In the cases of PVA with saponification degrees of 88 and 78 mol%, domain sizes of several tens of μm were observed for both powder and solution methods. This indicates that there was no apparent influence of pre-mixing method on the domain size. When poly(methyl methacrylate) (PMMA) was added to the PVC/PVA blend, smaller PVA domains (with sizes ranging from 5 to 10 μm) were observed in both powder and solution method systems than without the PMMA. Viscoelastic properties showed specific interactions between PVC and PMMA, and between PMMA and PVA.

A surfactant dispersed N-doped carbon sphere-poly(vinyl alcohol) composite as relative humidity sensor

2015 ◽  
Vol 26 (6) ◽  
pp. 4198-4201 ◽  
Author(s):  
Bruno B. Cunha ◽  
Márcia W. C. C. Greenshields ◽  
Messai A. Mamo ◽  
Neil J. Coville ◽  
Ivo A. Hümmelgen
Keyword(s):  
Relative Humidity ◽  
Vinyl Alcohol ◽  
Humidity Sensor ◽  
Poly Vinyl Alcohol ◽  
Carbon Sphere ◽  
Relative Humidity Sensor
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