Storage Modulus and Surface Morphology of Poly(vinyl alcohol)/Alumina Hybrid Hydrogels

2002 ◽  
Vol 23 (17) ◽  
pp. 1045-1048 ◽  
Author(s):  
Tetsu Mitsumata ◽  
Masashi Yuge ◽  
Shinichi Morino ◽  
Kenji Iwakura ◽  
Kiyohito Koyama
Keyword(s):  
Surface Morphology ◽  
Storage Modulus ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Hybrid Hydrogels

Swelling and mechanical behaviors of carbon nanotube/poly(vinyl alcohol) hybrid hydrogels

2007 ◽  
Vol 61 (8-9) ◽  
pp. 1704-1706 ◽  
Author(s):  
Xin Tong ◽  
Jingjing Zheng ◽  
Yancheng Lu ◽  
Zhenfang Zhang ◽  
Huiming Cheng
Keyword(s):  
Carbon Nanotube ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Mechanical Behaviors ◽  
Hybrid Hydrogels

Preparation and Characterization of Poly(vinyl alcohol)/Hydroxylapatite Hybrid Hydrogels

2007 ◽  
Vol 41 (17) ◽  
pp. 2071-2082 ◽  
Author(s):  
Yudong Zheng ◽  
Ying Jun Wang ◽  
Xiaofeng Chen ◽  
Liu Qing ◽  
Huai Yang
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Hybrid Hydrogels

scholarly journals Hybrid hydrogels based on polysaccharide gum karaya, poly(vinyl alcohol) and silk fibroin

2018 ◽  
Vol 6 (3) ◽  
pp. 035304 ◽  
Author(s):  
Hana Postulkova ◽  
Eva Nedomova ◽  
Vanessa Hearnden ◽  
Chris Holland ◽  
Lucy Vojtova
Keyword(s):  
Silk Fibroin ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Gum Karaya ◽  
Hybrid Hydrogels

Swelling and Antibacterial Properties of Chitosan/Poly(vinyl alcohol) Hybrid Hydrogels

2014 ◽  
Vol 672-674 ◽  
pp. 737-740 ◽  
Author(s):  
Jing Jing Zheng ◽  
Xiao Liang Gui
Keyword(s):  
Vinyl Alcohol ◽  
Antibacterial Properties ◽  
Poly Vinyl Alcohol ◽  
Swelling Properties ◽  
Hybrid Hydrogels ◽  
Antimicrobial Performance ◽  
Pva Hydrogel ◽  
Better Than

Chitosan (CTS) was added into poly (vinyl alcohol) (PVA) hydrogels to get their antibacterial properties. A series of CTS/PVA hybrid hydrogels were prepared by freezing/thawing method. The swelling properties of all hybrid hydrogels are better than those of the original PVA hydrogel. The CTS/PVA hybrid hydrogels show excellent antimicrobial performance towards Escherichia colis.

SWELLING DESWELLING STUDIES AFTER FREEZE–THAW TREATMENT OF NANOSILICA REINFORCED POLY (VINYL ALCOHOL)-BASED ORGANIC–INORGANIC HYBRID HYDROGEL

2011 ◽  
Vol 10 (04n05) ◽  
pp. 1087-1090
Author(s):  
TRIDIB BHUNIA ◽  
LUNA GOSWAMI ◽  
DIPANKAR CHATTOPADHYAY ◽  
ABHIJIT BANDYOPADHYAY
Keyword(s):  
Vinyl Alcohol ◽  
Room Temperature ◽  
Size Range ◽  
Poly Vinyl Alcohol ◽  
Particle Size Range ◽  
Hybrid Hydrogel ◽  
Inorganic Hybrid ◽  
Freeze Thaw ◽  
Hybrid Hydrogels ◽  
Different Molecular Weight

Aqueous nanosilica sol (particle size range: 9–13 nm, pH: 9.0) was added at various low concentration range (0.5–2 wt.%) into aqueous poly (vinyl alcohol) (PVA) of different molecular weight (98% hydrolyzed, 20 wt.%) (pH: 5.0) at room temperature under constant stirring to synthesize organic-inorganic hybrid hydrogels in presence of sodium lauryl sulphate as a silica dispersant. Buffer tablets were added to arrest the pH at 9.0 (to prevent any silica aggregation due to change in pH). The resultant hybrids were cast on Teflon sheets and dried in an oven at 50°C to drive out all the unbound water. Those films were then subjected to freese-thaw treatment continuously for 5 h. The freese-thawed films appeared opaque. The swelling-de swelling experiments with the hydrogels were carried out in distilled water at room temperature and consequently allowed to de-swell naturally. Those observations were correlated with the microstructures of the hybrid hydrogels.

Poly(Vinyl Alcohol) Fiber Reinforced High Density Poly(Ethylene) Composites: Dynamic Mechanical Thermal Analysis

2018 ◽  
Vol 773 ◽  
pp. 46-50 ◽  
Author(s):  
Achmad Chafidz ◽  
Umi Rofiqah ◽  
Tintin Mutiara ◽  
Muhammad Rizal ◽  
Mujtahid Kaavessina ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Storage Modulus ◽  
Dynamic Mechanical Thermal Analysis ◽  
Vinyl Alcohol ◽  
High Density ◽  
Poly Vinyl Alcohol ◽  
Dynamic Mechanical ◽  
Melt Compounding ◽  
Twin Screw ◽  
Pva Fiber

In the present work, high density polyethylene (HDPE)/poly (vinyl alcohol) (PVA) fiber composites with four different PVA fiber loadings (i.e. 0, 5, 10, 20 wt%) have been prepared via melt compounding method using a twin-screw extruder. The composites were characterized for their morphology by using a scanning electron microscopy (SEM). Whereas, the dynamic mechanical thermal analysis (DMTA) was carried out by using an oscillatory rheometer. The DMTA test was carried out under torsion mode using temperature sweep test on rectangular composites samples. The DMTA results showed that the storage modulus (G¢) of the composites were higher than that of the neat HDPE and increased with increasing PVA fiber loadings. This indicated that there was a considerable stiffness enhancement of the composites. For example, at temperature of 60°C, the increases of stiffness (i.e. storage modulus) of the composites were approximately 3, 31, and 54% for PVAC-5, 10, and 20, respectively. Whereas, at higher temperature (i.e. 120°C), the increases were about 4, 50, and 98% for PVAC-5, 10, and 20, respectively. These results indicated that even at higher temperatures, the enhancement of storage modulus of the composites was still high.

A facile strategy to fabricate highly-stretchable self-healing poly(vinyl alcohol) hybrid hydrogels based on metal–ligand interactions and hydrogen bonding

2016 ◽  
Vol 7 (47) ◽  
pp. 7269-7277 ◽  
Author(s):  
Yan Hui ◽  
Zhi-Bin Wen ◽  
Florence Pilate ◽  
Hui Xie ◽  
Cheng-Jie Fan ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Self Healing ◽  
Hybrid Hydrogel ◽  
Hybrid Hydrogels ◽  
Ligand Interactions ◽  
Highly Stretchable ◽  
Metal Ligand

A novel poly(vinyl alcohol) hybrid hydrogel based on metal–ligand interactions and hydrogen bonding was fabricated, possessing highly-stretchable and self-healing properties.

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