scholarly journals A new approach to prepare Polyethylene Glycol Allyl Glycidyl Ether

2021 ◽  
Vol 267 ◽  
pp. 02004
Author(s):  
Huizhen Wang ◽  
Ruiyang Xie ◽  
Mingjun Chen ◽  
Weihao Deng ◽  
Kaixin Zhang ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Allyl Alcohol ◽  
Glycidyl Ether ◽  
Optimum Process ◽  
Performance Parameters ◽  
Residual Concentration ◽  
New Approach ◽  
Allyl Glycidyl Ether ◽  
Maximal Yield ◽  
Important Intermediate

The polyethylene glycol allyl glycidyl ether (PGAGE) is an important intermediate for preparing silicone softener that can be synthesized from allyl alcohol polyoxyethylene ether and epichlorohydrin (ECH). The performance parameters including the concentration of ECH, initial boron trifluoride diethyl etherate (BFEE) as well as CaCl2 quality were investigated respectively. The optimum process parameters which can get high capping and low by-product rate are as follows: the ECH concentration is 2.0 M, the initial BFEE concentration is 1.65mM, and the CaCl2 dosage is 1.65g/L. Under these conditions, the maximal yield can be improved to 91.36%, the percent of capping rate is higher than 98.16%, the residual concentration of F-is only 0.63 mg/L.

scholarly journals Allyl glycidyl ether-modified animal glue binder for improved water resistance and bonding strength in sand casting

2021 ◽  
Vol 2 (2) ◽  
Author(s):  
Chen-chen Fan ◽  
Qian Tang
Keyword(s):  
Tensile Strength ◽  
Bonding Strength ◽  
Room Temperature ◽  
Water Resistance ◽  
Glycidyl Ether ◽  
Animal Glue ◽  
Practical Application ◽  
Foundry Industry ◽  
Dog Bone ◽  
Allyl Glycidyl Ether

This paper aims to develop a modified animal glue sand binder for foundry casting with improved water resistance and bonding strength. An efficient method is reported by using sodium hydroxide as the catalyst to improve the operability of animal glue binder and allyl glycidyl ether as the modifier to improve the water resistance and bonding strength. Sand specimens prepared using allyl glycidyl ether-modified animal glue binder were cured by compressed air at room temperature. The proposed method saves energy and is environmentally friendly and inexpensive. Compared with unmodified animal glue binder, standard dog bone sand specimens with allyl glycidyl ether-modified animal glue binder had higher tensile strength of 2.58 MPa, flowability of 1.95 g, better water resistance (a lower decrease in tensile strength at 25 °C and relative humidity of 60%), and good collapsibility. This allyl glycidyl ether-modified animal glue binder is suitable for practical application in the foundry industry.

Crosslinked poly(allyl glycidyl ether) with pendant nitrile groups as solid polymer electrolytes for Li–S batteries

2020 ◽  
Vol 362 ◽  
pp. 137141
Author(s):  
Yadagiri L.N.K. Mallela ◽  
Sohyeon Kim ◽  
Gyuwon Seo ◽  
Jin Won Kim ◽  
Santosh Kumar ◽  
...  
Keyword(s):  
Polymer Electrolytes ◽  
Glycidyl Ether ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Allyl Glycidyl Ether

scholarly journals Thiol–ene coupling reaction achievement and monitoring by “in situ” UV irradiation NMR spectroscopy

RSC Advances ◽  
2020 ◽  
Vol 10 (42) ◽  
pp. 25214-25222
Author(s):  
Natalia Toncheva-Moncheva ◽  
Miroslav Dangalov ◽  
Nikolay G. Vassilev ◽  
Christo P. Novakov
Keyword(s):  
Nmr Spectroscopy ◽  
Uv Irradiation ◽  
Glycidyl Ether ◽  
Coupling Reaction ◽  
Polyethylene Glycols ◽  
Coupling Reactions ◽  
Uv Illumination ◽  
Allyl Glycidyl Ether

An “In situ” LED UV illumination NMR setup for achievement of initiator-free coupling reactions of allyl-functionalized poly(allyl glycidyl ether) with polyethylene glycols thiols.

Immobilization of dopamine on the copolymer of N ‐vinyl‐2‐pyrrolidone and allyl glycidyl ether and synthesis of new hydrogels

2020 ◽  
Vol 69 (12) ◽  
pp. 1275-1282
Author(s):  
Yaroslav O Mezhuev ◽  
Alexander V Varankin ◽  
Anna L Luss ◽  
Valerie A Dyatlov ◽  
Aristidis M Tsatsakis ◽  
...  
Keyword(s):  
Glycidyl Ether ◽  
Allyl Glycidyl Ether
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