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The dynamics of Tetra-PEG prepolymer in ionic liquid (IL) and their gelation kinetics were investigated by means of time-resolved dynamic light scattering (TR-DLS). From the DLS measurements of prepolymer solutions at chain-overlapping concentration, c * , it was found that the prepolymers are dispersed homogeneously in the IL. The intensity correlation functions (ICFs) were well fitted with...
The slide-ring (SR) gels derived from polyethylene glycol (PEG) threatened with polyrotaxane or hydroxypropyl polyrotaxane and crosslinked by 1,4-butanediol diglycidil ether were swollen with ionic liquids (ILs) and their ionic conduction was investigated. The molar conductivity of an SR gel swollen with 1-ethyl-3-methylimidazolium ethylsulfate (EMIES) with a high swelling ratio and with a small crosslinking...
The present paper describes for the first time the use of ionic liquid based on trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate (IL104), as catalytic curing agent for bisphenol A – based epoxy prepolymer (DGEBA). The curing process was investigated by DSC, rheometry and FTIR analysis, indicating an increasing on the curing rate as the amount of IL in the system increased. The...
Both silk fibroin (SF) and cellulose are considered as potential substitutes of synthetic polymers because of the problems for the exhaustion of fossil resources and the pollution of environment. In order to obtain a material that exhibits both the advantages of SF and cellulose, ionic liquid (IL) was introduced to prepare blend films of SF and cellulose in the present work. We found that by our new...
Amorphous cellulose films were created by regeneration from 1-Ethyl-3-methylimidazolium acetate (EmimAc) solutions. Their mechanical properties were analyzed as a function of water content. Cellulose with different molecular weights, i.e. microcrystalline cellulose (Avicel), Spruce cellulose and bacterial nanocellulose (BNC), were used for film preparation. All the regenerated films were free from...
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