Chitosan, itaconic acid and poly(vinyl alcohol) hybrid polymer networks of high degree of swelling and good mechanical strength

2010 ◽  
Vol 59 (5) ◽  
pp. 686-694 ◽  
Author(s):  
Nedeljko B Milosavljević ◽  
Ljiljana M Kljajević ◽  
Ivanka G Popović ◽  
Jovanka M Filipović ◽  
Melina T Kalagasidis Krušić
Keyword(s):  
Mechanical Strength ◽  
Itaconic Acid ◽  
Vinyl Alcohol ◽  
Polymer Networks ◽  
Poly Vinyl Alcohol ◽  
Hybrid Polymer ◽  
Degree Of Swelling ◽  
High Degree

Tailoring the in vitro characteristics of poly(vinyl alcohol)-nanohydroxyapatite composite scaffolds for bone tissue engineering

2016 ◽  
Vol 36 (8) ◽  
pp. 771-784 ◽  
Author(s):  
Tejinder Kaur ◽  
Arunachalam Thirugnanam ◽  
Krishna Pramanik
Keyword(s):  
Mechanical Strength ◽  
Vinyl Alcohol ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Poly Vinyl Alcohol ◽  
Apatite Formation ◽  
Composite Scaffolds ◽  
Alizarin Red ◽  
Casting Technique

Abstract Poly(vinyl alcohol) reinforced with nanohydroxyapatite (PVA-nHA) composite scaffolds were developed by varying the nHA (1%, 2%, 3%, 4%, and 5%, w/v) composition in the PVA matrix by solvent casting technique. The developed composite scaffolds were characterized using scanning electron microscopy (SEM), X-ray powder diffraction (XRD), attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, and contact angle measurement. The stability of the composite scaffolds in physiological environment was evaluated by swelling and degradation studies. Further, these composite scaffolds were tested for in vitro bioactivity, hemolysis, biocompatibility, and mechanical strength. SEM micrographs showed a homogenous distribution of nHA (3%, w/v) in the PVA matrix. XRD and ATR-FTIR analysis confirmed no phase contamination and the existence of the chemical bond between PVA-nHA at approximately 2474 cm-1. PVA-nHA composite scaffolds with 3% (w/v) concentration of nHA showed nominal swelling and degradation behavior with good mechanical strength. The mechanical strength and degradation properties of the scaffold above 3% (w/v) of nHA was found to deteriorate, which is due to the agglomeration of nHA. The in vitro bioactivity and hemolysis studies showed improved apatite formation and hemocompatibility of the developed scaffolds. In vitro cell adhesion, proliferation, alkaline phosphatase activity, and Alizarin red S staining confirmed the biocompatibility of the composite scaffolds.

Improving the Processing Ability and Mechanical Strength of Starch/Poly(vinyl alcohol) Blends through Plasma and Acid Modification

2008 ◽  
Vol 272 (1) ◽  
pp. 150-155 ◽  
Author(s):  
Sung-Yeng Yang ◽  
Chia-I Liu ◽  
Jing-Yi Wu ◽  
Ju-Chien Kuo ◽  
Chi-Yuan Huang
Keyword(s):  
Mechanical Strength ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Acid Modification ◽  
Processing Ability
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