Dual mode gelation behavior of silk fibroin microgel embedded poly(ethylene glycol) hydrogels

2016 ◽  
Vol 4 (26) ◽  
pp. 4574-4584 ◽  
Author(s):  
S. Ryu ◽  
H. H. Kim ◽  
Y. H. Park ◽  
C.-C. Lin ◽  
I. C. Um ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Silk Fibroin ◽  
Cross Linking ◽  
Poly Ethylene Glycol ◽  
Dual Mode ◽  
Hydrogel Formation ◽  
Gelation Behavior ◽  
Poly Ethylene

Hydrogel formation by more than two cross-linking mechanisms is preferred for the sophisticated manipulation of hydrogel properties.

Cross-linking of cellulose and poly(ethylene glycol) with citric acid

2015 ◽  
Vol 90 ◽  
pp. 21-24 ◽  
Author(s):  
Pamela de Cuadro ◽  
Tiina Belt ◽  
Katri S. Kontturi ◽  
Mehedi Reza ◽  
Eero Kontturi ◽  
...  
Keyword(s):  
Citric Acid ◽  
Ethylene Glycol ◽  
Cross Linking ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Preparation and Properties of a Hydrolytically Stable Cyclooctyne-Containing Polymer

Synlett ◽  
2018 ◽  
Vol 29 (19) ◽  
pp. 2535-2541
Author(s):  
Alex Adronov ◽  
Kelvin Li ◽  
Stuart McNelles
Keyword(s):  
Molecular Weight ◽  
Ethylene Glycol ◽  
Monomethyl Ether ◽  
Phenylene Vinylene ◽  
Cross Linking ◽  
Poly Ethylene Glycol ◽  
Ethylene Glycol Monomethyl Ether ◽  
Glycol Monomethyl Ether ◽  
Poly Ethylene

A poly[(phenylene vinylene)-co-dibenzocyclooctyne] polymer prepared by Wittig polymerization chemistry between dibenzocyclooctyne bisaldehyde [DIBO-(CHO)2] and bis(triethyleneglycol)phenylbis(tributylphosphonium) dibromide is reported. The resulting polymer exhibits moderate molecular weight (Mn: 10.5 kDa, Mw: 21.3 kDa, Ð: 2.02) and is fluorescent. It could be readily functionalized by strain-promoted alkyne-azide cycloadditon with different azides, and fluorescence of the polymer was preserved after functionalization. Grafting azide-terminated 5 kDa poly(ethylene glycol) monomethyl ether chains drastically affected the solubility of the polymer. Cross-linking the polymer with poly(ethylene glycol) that was terminated at both ends with azide groups gave access to a fluorescent organogel that could be dried and reswollen with water to form a hydrogel.

scholarly journals Preparation of silk fibroin-poly(ethylene glycol) conjugate films through click chemistry

2011 ◽  
Vol 60 (12) ◽  
pp. 1737-1744 ◽  
Author(s):  
Sandra Sampaio ◽  
Teresa M. R. Miranda ◽  
Jorge G. Santos ◽  
Graça M. B. Soares
Keyword(s):  
Ethylene Glycol ◽  
Click Chemistry ◽  
Silk Fibroin ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

scholarly journals Poly(ethylene) glycol hydrogel based on oxa-Michael reaction: Precursor synthesis and hydrogel formation

2017 ◽  
Vol 12 (2) ◽  
pp. 02C414 ◽  
Author(s):  
Hanqi Wang ◽  
Fang Cheng ◽  
Wei He ◽  
Jiaohui Zhu ◽  
Gang Cheng ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Michael Reaction ◽  
Poly Ethylene Glycol ◽  
Precursor Synthesis ◽  
Hydrogel Formation ◽  
Poly Ethylene

Synthesis of Sulfhydryl Cross-Linking Poly(Ethylene Glycol)-Peptides and Glycopeptides as Carriers for Gene Delivery†

2002 ◽  
Vol 13 (2) ◽  
pp. 232-239 ◽  
Author(s):  
Youmie Park ◽  
Kai Y. Kwok ◽  
Chawki Boukarim ◽  
Kevin G. Rice
Keyword(s):  
Gene Delivery ◽  
Ethylene Glycol ◽  
Cross Linking ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Enhancement of Mechanical Properties Upon Hydration in Copolymers of PEG and Iodinated Tyrosine-derived Poycarbonates

2008 ◽  
Vol 1132 ◽  
Author(s):  
F. Bedoui ◽  
L. K. Widjaja ◽  
A. Luk ◽  
D. Bolikal ◽  
N. S. Murthy ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Ethylene Glycol ◽  
Ethyl Ester ◽  
Opposite Effect ◽  
Polymeric Materials ◽  
Cross Linking ◽  
Poly Ethylene Glycol ◽  
Reinforcing Effect ◽  
Poly Ethylene

ABSTRACTIncrease in modulus upon hydration in copolymers of desaminotyrosyl-tyrosine ethyl ester (DTE) and poly(ethylene glycol) (PEG) with iodinated tyrosines, poly(I2DTE-co-PEG carbonate)s, was investigated by varying the fraction and the molecular weight of the hydrophilic PEG component. Water, as expected, acts as plasticizer in polymer with PEG content < 15 wt% and > 30 wt%. But, water has the opposite effect in iodinated polymers with moderate PEG contents, between 15 to 20 wt%: it enhances the Young's modulus. The strength and modulus of hydrated poly(I2DTE-co-15%PEG2K carbonate)s increased by as much as fifteen fold upon hydration. While the decrease in the mechanical properties in most polymeric materials with diluents such water is due to the solvent-induced swelling, the increase in strength and modulus that is observed is most likely due to the reinforcing effect of the increased cross-linking efficiency of the hydrated PEG domains in the iodinated polymer.

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