Synthesis and characterization of a dyeable bio-based polyurethane/branched poly(ethylene imine) interpenetrating polymer network with enhanced wet fastness

2017 ◽  
Vol 89 (3) ◽  
pp. 335-346 ◽  
Author(s):  
Jae Woo Chung ◽  
Ji Hwan Park ◽  
Hyung-Min Choi ◽  
Kyung Wha Oh
Keyword(s):  
Network Structure ◽  
Polymer Network ◽  
Interpenetrating Polymer Network ◽  
Interpenetrating Network ◽  
Ethylene Imine ◽  
Angle Measurements ◽  
Methylene Diphenyl Diisocyanate ◽  
Contact Angle Measurements ◽  
Solution Casting Method ◽  
Poly Ethylene

Bio-based polyurethane is synthesized from biodegradable polycaprolactone, methylene diphenyl diisocyanate and 1,4-butanediol. The bio-based polyurethane is blended with branched polyethyleneimine by a solution casting method and further treated with glutaraldehyde. From nuclear magnetic resonance, Fourier-transform infrared spectroscopy, leaching tests and contact angle measurements, it was found that a semi-interpenetrating polymer network structure is induced by the glutaraldehyde treatment of the bio-based polyurethane/branched polyethyleneimine blend film, which resulting from the crosslinking of branched polyethyleneimine by imine bonds formed from the amine-aldehyde reaction between branched polyethyleneimine and glutaraldehyde. In addition, the glass transition temperature, Young’s modulus and the shape retention results show that the mechanical strength of bio-based polyurethane, which is weakened by the plasticizing effect of branched polyethyleneimine, is restored by the formation of the semi-interpenetrating network structure. We found that the bio-based polyurethane/branched polyethyleneimine with a semi-interpenetrating network shows a much higher affinity for Acid Red 4 than bio-based polyurethane, and the wet fastness of dye is significantly improved by the formation of the semi-interpenetrating network.

scholarly journals Electrospun Sericin/PNIPAM-Based Nano-Modified Cotton Fabric with Multi-Function Responsiveness

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 632
Author(s):  
Jia Li ◽  
Bo-Xiang Wang ◽  
De-Hong Cheng ◽  
Zhi-Mei Liu ◽  
Li-Hua Lv ◽  
...  
Keyword(s):  
Smart Materials ◽  
Polymer Network ◽  
Cotton Fabrics ◽  
Interpenetrating Polymer Network ◽  
Stimuli Responsive ◽  
Gram Positive Bacteria ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Cotton Textiles ◽  
Poly Ethylene

There is a significant interest in developing environmentally responsive or stimuli-responsive smart materials. The purpose of this study was to investigate multi-function responsive cotton fabrics with surface modification on the nanoscale. Three technologies including electrospinning technology, interpenetrating polymer network technology, and cross-linking technology were applied to prepare the multi-function sericin/poly(N-isopropylacrylamide)/Poly(ethylene oxide) nanofibers, which were then grafted onto the surfaces of cotton textiles to endow the cotton textiles with outstanding stimuli-responsive functionalities. The multi-function responsive properties were evaluated via SEM, DSC, the pH-responsive swelling behavior test and contact angle measurements. The results demonstrate that with this method, multi-function responsive, including thermo- and pH-responsiveness, cotton fabrics were fast formed, and the stimuli-responsiveness of the materials was well controlled. In addition, the antimicrobial testing reveals efficient activity of cotton fabrics with the sericin/PNIPAM/PEO nanofiber treatments against Gram-positive bacteria and Gram-negative bacteria such as Staphylococcus aureus and Escherichia coli. The research shows that the presented strategy demonstrated the great potential of multi-function responsive cotton fabrics fabricated using our method.

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 .

Surface Modification of Copolyether-Urethane Catheters with Poly(Ethylene Oxide)

1989 ◽  
Vol 12 (6) ◽  
pp. 390-394 ◽  
Author(s):  
E. Brinkman ◽  
A. Poot ◽  
T. Beugeling ◽  
L. Van Der Does ◽  
A. Bantjes
Keyword(s):  
Surface Modification ◽  
Ethylene Oxide ◽  
Blood Compatibility ◽  
Angle Measurements ◽  
Fold Reduction ◽  
Contact Angle Measurements ◽  
Platelet Deposition ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Pellethane 2363 80A catheters were modified with poly(ethylene oxide) in order to improve their blood compatibility. Contact angle measurements showed that Pellethane 2363 80A surfaces had increased wettability after this modification. The results of in vitro blood compatibility tests showed that surface modification with poly(ethylene oxide) resulted in a five-fold reduction of platelet deposition. Activation of coagulation was not affected.

Development of visible-light responsive and mechanically enhanced “smart” UCST interpenetrating network hydrogels

Soft Matter ◽  
2018 ◽  
Vol 14 (1) ◽  
pp. 151-160 ◽  
Author(s):  
Yifei Xu ◽  
Onkar Ghag ◽  
Morgan Reimann ◽  
Philip Sitterle ◽  
Prithwish Chatterjee ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Visible Light ◽  
Polymer Network ◽  
Interpenetrating Polymer Network ◽  
Solution Temperature ◽  
Interpenetrating Network ◽  
Critical Solution Temperature ◽  
Smart Hydrogel ◽  
Upper Critical Solution Temperature

An interpenetrating polymer network, chlorophyllin-incorporated “smart” hydrogel was synthesized and exhibited enhanced mechanical properties, upper critical solution temperature swelling, and promising visible-light responsiveness.

Formation and blood compatibility of thin layers of hyperbranched polymers on polyurethane films

e-Polymers ◽  
2002 ◽  
Vol 2 (1) ◽  
Author(s):  
Yong Soon Park ◽  
Yong Soo Kang ◽  
Dong June Chung
Keyword(s):  
Blood Compatibility ◽  
Film Surface ◽  
Hyperbranched Polymers ◽  
Thin Layers ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Unique Method ◽  
Poly Ethylene Oxide ◽  
Ft Ir ◽  
Poly Ethylene

AbstractTwo kinds of hyperbranched polymers, star-shaped poly(ethylene oxide) and poly(2-ethyl-2-oxazoline)-bound polyamidoamine dendrimer, were immobilized on polyurethane (PU) films using photoreactive azidophenyl groups. Immobilization of the hyperbranched polymers was verified by ATR FT-IR observations and contact angle measurements. Using photoreactive molecules, this study shows a unique method to modify polymer films without functional groups easily through immobilization of other polymers on the film surface. PU surfaces modified with immobilized hyperbranched polymer showed significantly reduced platelet adhesion, i.e. increased blood compatibility, as measured via UV spectrometry and scanning electron microscopy.

scholarly journals Mechanical, thermal and surface properties of polyacrylamide/dextran semi-interpenetrating network hydrogels tuned by the synthesis temperature

2013 ◽  
Vol 11 (2) ◽  
pp. 248-258 ◽  
Author(s):  
Maria Dinu ◽  
Maria Cazacu ◽  
Ecaterina Drăgan
Keyword(s):  
Thermal Stability ◽  
Polymer Network ◽  
Synthesis Temperature ◽  
Water Vapor Sorption ◽  
Interpenetrating Polymer Network ◽  
Vapor Sorption ◽  
Interpenetrating Network ◽  
Preparation Temperature ◽  
Thermal Stability Of ◽  
Network Morphology

AbstractThe mechanical, rheological, thermal, and surface behaviors of three polyacrylamide/dextran (PAAm/Dx) semi-interpenetrating polymer network (semi-IPN) hydrogels, prepared at 22°C, 5°C and −18°C, were investigated. The results were compared with those obtained on cross-linked PAAm without Dx synthesized under the same conditions. Hydrogels prepared at the lowest temperature were the most mechanically stable. The thermal stability of the semi-IPN hydrogels is slightly lower than the corresponding PAAm gels, irrespective of preparation temperature. The water vapor sorption capacity depended on the presence of Dx as well as preparation temperature, which determines the network morphology.

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