High strength polyvinyl alcohol/polyacrylic acid (PVA/PAA) hydrogel fabricated by Cold-Drawn method for cartilage tissue substitutes

The effect of heat setting methods on the structures and mechanical properties of high strength polyvinyl alcohol (PVA) fibre is studied in this article. The microstructure and mechanical properties of heat treated PVA fibre is investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and single fibre electronic tensile strength tester. Results show that the heat setting method with constant tension is a good heat setting method which can largely enhance the tensile strength of PVA fibre. During the heat setting process, the mechanical properties of PVA fibre are greatly affected by the temperature, tension and setting time. When the temperature is 220°C, tension is 5cN/dtex and setting time is 90sec, the tensile strength of PVA fibre increases from 12.0cN/dtex to 16.4cN/dtex in compare with the PVA fibre without heat setting

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Development of potentially biocompatible hydrogels with cylindrical pores prepared from polyvinyl alcohol and low‐molecular weight polyacrylic acid

Polymer Engineering & Science ◽

10.1002/pen.25147 ◽

2019 ◽

Vol 59 (7) ◽

pp. 1479-1488 ◽

Cited By ~ 2

Author(s):

Laura M. Sanchez ◽

Vera A. Alvarez

Keyword(s):

Molecular Weight ◽

Polyvinyl Alcohol ◽

Polyacrylic Acid ◽

Low Molecular Weight ◽

Cylindrical Pores

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High strength clean briquettes production from long‐flame coal fines by using polyvinyl alcohol and coal slime as binders

Asia-Pacific Journal of Chemical Engineering ◽

10.1002/apj.2414 ◽

2020 ◽

Vol 15 (2) ◽

Author(s):

Shoujun Liu ◽

Zhiwei Chang ◽

Song Yang ◽

Qian Zhang ◽

Ju Shangguan ◽

...

Keyword(s):

Polyvinyl Alcohol ◽

High Strength ◽

Coal Slime ◽

Coal Fines

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The effect of degree of polymerization on the structure and properties of polyvinyl alcohol fibers with high strength and high modulus

Journal of Applied Polymer Science ◽

10.1002/app.49971 ◽

2020 ◽

Vol 138 (10) ◽

pp. 49971

Author(s):

Xinqiu Hong ◽

Yongjing Xu ◽

Liming Zou ◽

Yan Vivian Li ◽

Junwei He ◽

...

Keyword(s):

Polyvinyl Alcohol ◽

High Strength ◽

Degree Of Polymerization ◽

Structure And Properties ◽

High Modulus

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Anisotropic Cellulose Nanofibers/Polyvinyl Alcohol/Graphene Aerogels Fabricated by Directional Freeze-drying as Effective Oil Adsorbents

Polymers ◽

10.3390/polym11040712 ◽

2019 ◽

Vol 11 (4) ◽

pp. 712 ◽

Cited By ~ 9

Author(s):

Lijie Zhou ◽

Shengcheng Zhai ◽

Yiming Chen ◽

Zhaoyang Xu

Keyword(s):

Polyvinyl Alcohol ◽

Freeze Drying ◽

High Efficiency ◽

Cellulose Nanofibers ◽

High Strength ◽

Dip Coating ◽

High Porosity ◽

Water Contact ◽

Water Separation ◽

Composite Aerogel

Under the current situation of frequent oil spills, the development of green and recyclable high-efficiency oil-absorbing aerogel materials has attracted wide attention from researchers. In this study, we report a high-strength, three-dimensional hydrophobic cellulose nanofiber (CNF)/polyvinyl alcohol (PVA)/graphene oxide (GO) composite aerogel with an anisotropic porous structure, which was fabricated by directional freeze-drying technology using anisotropically grown ice crystals as a template, followed by hydrophobic treatment with a simple dip coating process. The prepared composite aerogel presented anisotropic multi-level pore microstructures, low density (17.95 mg/cm3) and high porosity (98.8%), good hydrophobicity (water contact angle of 142°) and great adsorption capacity (oil absorption reaching 96 times its own weight). More importantly, the oriented aerogel had high strength, whose compressive stress at 80% strain reached 0.22 MPa and could bear more than 22,123 times its own weight without deformation. Therefore, the CNF/PVA/GO composite aerogel prepared by a simple and easy-to-operate directional freeze-drying method is a promising absorbent for oil-water separation.

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