scholarly journals Preparation of γ-PGA hydrogels and swelling behaviors in salt solutions with different ionic valence numbers

RSC Advances ◽  
2017 ◽  
Vol 7 (18) ◽  
pp. 11085-11093 ◽  
Author(s):  
Zheng Li ◽  
Guidong He ◽  
Jiachuan Hua ◽  
Maoqi Wu ◽  
Wen Guo ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Glutamic Acid ◽  
Diglycidyl Ether ◽  
Solution Polymerization ◽  
Salt Solutions ◽  
Ionic Valence ◽  
Swelling Behaviors

In this paper, a novel poly γ-glutamic acid (γ-PGA) hydrogel was successfully synthesized by solution polymerization and ethylene glycol diglycidyl ether (EGDE) was used as crosslinker.

scholarly journals Novel Biological Hydrogel: Swelling Behaviors Study in Salt Solutions with Different Ionic Valence Number

Polymers ◽  
2018 ◽  
Vol 10 (2) ◽  
pp. 112 ◽  
Author(s):  
Yu Wang ◽  
Guidong He ◽  
Zheng Li ◽  
Jiachuan Hua ◽  
Maoqi Wu ◽  
...  
Keyword(s):  
Salt Solutions ◽  
Ionic Valence ◽  
Hydrogel Swelling ◽  
Valence Number ◽  
Swelling Behaviors

scholarly journals Ultrasonic-modified montmorillonite uniting ethylene glycol diglycidyl ether to reinforce protein-based composite films

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 433-442
Author(s):  
Hua He ◽  
Rui-jing Jia ◽  
Kai-qiang Dong ◽  
Jia-wen Huang ◽  
Zhi-yong Qin
Keyword(s):  
Ethylene Glycol ◽  
Soy Protein ◽  
Soy Protein Isolate ◽  
Composite Films ◽  
Barrier Properties ◽  
Protein Isolate ◽  
Diglycidyl Ether ◽  
X Ray Diffraction ◽  
Protein Film ◽  
Modified Montmorillonite

Abstract A novel biodegradable protein-based material (UMSPIE) that consists of natural polymer soy protein isolate (SPI), ultrasonic-modified montmorillonite (UMMT), and ethylene glycol diglycidyl ether (EGDE) was produced by solution casting. Fourier infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TG), and scanning electron microscopy (SEM) were used to characterize the chemical structure and micro-morphologies of as-synthesized protein-based composite films. The results showed that the interlayer structure of MMT was destroyed by ultrasonic treatment, and the hydrogen bonding between SPI chains and the ultrasound-treated MMT plates was enhanced. The synergistic effect of UMMT and EGDE on SPI molecules made the network structure of the UMSPIE film denser. In addition, the mechanical and barrier properties of the as-synthesized films were explored. Compared with pure soy protein film, the tensile strength of the UMSPIE film has an increase of 266.82% (increasing from 4.4 to 16.14 MPa). From the above, the modified strategy of layered silicates filling combining crosslinking agents is considered as an effective method to improve the functional properties of bio-based polymer composites.

scholarly journals Synthesis of Network Polymers by Means of Addition Reactions of Multifunctional-Amine and Poly(ethylene glycol) Diglycidyl Ether or Diacrylate Compounds

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2047
Author(s):  
Naofumi Naga ◽  
Mitsusuke Sato ◽  
Kensuke Mori ◽  
Hassan Nageh ◽  
Tamaki Nakano
Keyword(s):  
Ethylene Glycol ◽  
Room Temperature ◽  
Addition Reaction ◽  
Monomer Concentration ◽  
Diglycidyl Ether ◽  
Porous Polymers ◽  
Addition Reactions ◽  
Poly Ethylene Glycol ◽  
Network Polymers ◽  
Poly Ethylene

Addition reactions of multi-functional amine, polyethylene imine (PEI) or diethylenetriamine (DETA), and poly(ethylene glycol) diglycidyl ether (PEGDE) or poly(ethylene glycol) diacrylate (PEGDA), have been investigated to obtain network polymers in H2O, dimethyl sulfoxide (DMSO), and ethanol (EtOH). Ring opening addition reaction of the multi-functional amine and PEGDE in H2O at room temperature or in DMSO at 90 °C using triphenylphosphine as a catalyst yielded gels. Aza-Michael addition reaction of the multi-functional amine and PEGDA in DMSO or EtOH at room temperature also yielded corresponding gels. Compression test of the gels obtained with PEI showed higher Young’s modulus than those with DETA. The reactions of the multi-functional amine and low molecular weight PEGDA in EtOH under the specific conditions yielded porous polymers induced by phase separation during the network formation. The morphology of the porous polymers could be controlled by the reaction conditions, especially monomer concentration and feed ratio of the multi-functional amine to PEGDA of the reaction system. The porous structure was formed by connected spheres or a co-continuous monolithic structure. The porous polymers were unbreakable by compression, and their Young’s modulus increased with the increase in the monomer concentration of the reaction systems. The porous polymers absorbed various solvents derived from high affinity between the polyethylene glycol units in the network structure and the solvents.

Hyperbranched polyimides crosslinked with ethylene glycol diglycidyl ether: Glass transition dynamics and permeability

Polymer ◽  
2006 ◽  
Vol 47 (19) ◽  
pp. 6765-6772 ◽  
Author(s):  
V.A. Bershtein ◽  
L.M. Egorova ◽  
P.N. Yakushev ◽  
P. Sysel ◽  
R. Hobzova ◽  
...  
Keyword(s):  
Glass Transition ◽  
Ethylene Glycol ◽  
Diglycidyl Ether ◽  
Transition Dynamics ◽  
Hyperbranched Polyimides

Physical properties of silk fibers treated with ethylene glycol diglycidyl ether by the pad/batch method

1993 ◽  
Vol 50 (10) ◽  
pp. 1841-1849 ◽  
Author(s):  
Masuhiro Tsukada ◽  
Hideki Shiozaki ◽  
Yoko Goto ◽  
Giuliano Freddi
Keyword(s):  
Ethylene Glycol ◽  
Physical Properties ◽  
Diglycidyl Ether ◽  
Batch Method ◽  
Silk Fibers

Ion exchange voltammetry at branched polyethylenimine cross-linked with ethylene glycol diglycidyl ether and sensitive determination of ascorbic acid

2013 ◽  
Vol 105 ◽  
pp. 31-39 ◽  
Author(s):  
Vellaichamy Ganesan ◽  
Pankaj Kumar Rastogi ◽  
Rupali Gupta ◽  
Matthew T. Meredith ◽  
Shelley D. Minteer
Keyword(s):  
Ascorbic Acid ◽  
Ion Exchange ◽  
Ethylene Glycol ◽  
Diglycidyl Ether ◽  
Branched Polyethylenimine ◽  
Sensitive Determination

Flexible transparent wood enabled by epoxy resin and ethylene glycol diglycidyl ether

2020 ◽  
Author(s):  
Hangchuan Cai ◽  
Zhiqi Wang ◽  
Di Xie ◽  
Panpan Zhao ◽  
Jianping Sun ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Epoxy Resin ◽  
Diglycidyl Ether
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