Synthesis and characterization of crosslinkable latex with interpenetrating network structure based on polystyrene and polyacrylate

2006 ◽  
Vol 55 (8) ◽  
pp. 951-960 ◽  
Author(s):  
Ji-De Zhang ◽  
Mu-Jie Yang ◽  
Yang-Rong Zhu ◽  
Huan Yang
Keyword(s):  
Network Structure ◽  
Synthesis And Characterization ◽  
Interpenetrating Network

Synthesis and characterization of a novel wound dressing by PVP/ PAANa/chitosan with semi-interpenetrating polymer network structure

e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Ying Wu ◽  
Qing Yang ◽  
Yali Gi ◽  
Yueting Zhang
Keyword(s):  
Network Structure ◽  
Wound Dressing ◽  
Polymer Network ◽  
Interpenetrating Polymer Network ◽  
Wound Dressings ◽  
Synthesis And Characterization ◽  
Cross Linking ◽  
Mass Ratio ◽  
Scanning Electron

AbstractA novel hydrogel wound dressing with semi-interpenetrating polymer network structure (semi-IPN) was prepared by radical polymerization of acrylic acid with potassium persulfate (K2S2O8) as initiator and N, N'-methylenebisacrylamide (MBA) as cross-linking agent in the presence of chitosan (CTS) and polyvinyl pyrrolidone (PVP). Hydrogels were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). SEM displayed semi- IPN hydrogels' creased surface with some scale-like wrinkles, thus improving the absorptive capability which has been considered as a most important characteristic of wound dressings. It was found that the content of cross-linking agent and the mass ratio of PVP and CTS had much influence on the mechanical properties of the hydrogel, varying from brittle plastics to elastomer due to the different degrees of cross linking. Since tensile strength is partly in inverse ratio to the hydrogel absorbent capability, the article offers an analysis of varying material proportion in order to obtain an optimum properties of the hydrogel wound dressing .

Synthesis and characterization of nanocomposites of silicon dioxide and polyurethane and epoxy resin interpenetrating network

2003 ◽  
Vol 52 (9) ◽  
pp. 1493-1497 ◽  
Author(s):  
Hongwen Zhang ◽  
Bing Wang ◽  
Hongtu Li ◽  
Yan Jiang ◽  
Jingyuan Wang
Keyword(s):  
Silicon Dioxide ◽  
Epoxy Resin ◽  
Synthesis And Characterization ◽  
Interpenetrating Network

Synthesis and Characterization of Sodium AMPS-Based Interpenetrating Network Hydrogels for Use as Temporary Wound Dressing

2014 ◽  
Vol 894 ◽  
pp. 300-304 ◽  
Author(s):  
Juraiporn Porkaew ◽  
Runglawan Somsunan ◽  
Kanarat Nalampang ◽  
Robert Molloy
Keyword(s):  
Sulfonic Acid ◽  
Wound Dressing ◽  
Water Retention ◽  
Radical Copolymerization ◽  
Synthesis And Characterization ◽  
Poly Vinyl Alcohol ◽  
Interpenetrating Network ◽  
Free Radical Copolymerization ◽  
Water Interaction

Hydrogel is one of the most interesting materials for use as wound dressing. In this study, interpenetrating network (IPN) hydrogels were synthesized by free radical copolymerization of sodium salt of 2-acrylamido-2-methylpropane sulfonic acid (AMPS) and N-vinylpyrrolidone (NVP), in the presence of poly (vinyl alcohol) (PVOH). The incorporation of PVOH offered the hydrophilicity to the hydrogel. The polymerization was carried out using N,N-methylene-bis-acrylamide and 4,4-azo-bis (4-cyanopentanoic acid) as a crosslinker and UV-photoinitiator, respectively. The successful of polymerization was indicated by gel content which was in the range of 86 90%. The structure of prepared hydrogels was confirmed by Fourier Transform Infrared Spectroscopy. In addition, the hydrogel-water interaction was investigated by mean of water content and water retention. Manipulation of the AMPS/NVP ratio significantly altered the properties of the hydrogels. As expected, the interaction of hydrogel and water decreased as increasing of NVP contents due to this monomer provides more hydrophobic functional groups. In conclusion, it is believed that the prepared AMPS/NVP/PVOH interpenetrating network hydrogels show the potential for use as temporary wound dressing.

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