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A highly selectively synthetic molecular imprinted polymer (MIP) sorbent for 17-B-estradiol was prepared using a non-covalent imprinting technique. The MIP polymers were synthesized in ethanol by using 17-B-estradiol as the template, 3-aminopropyltriethoxysilane as the functional monomer, HCl as catalyst. When compared with the nonimprinted polymer (NIP), the MIP displayed outstanding affinity and...
Polyurethanes with pedant quaternary ammonium salts (QAS) have been shown potent antimicrobial properties against gram-positive bacteria but less sensitive to gram-negative ones. Besides, due to using a large amount of QAS chain extenders, Polyurethanes with pedant QAS have been proven to be high water adsorption and even water soluble. In order to solve the two problems mentioned above, Novel polyurethanes...
Novel membranes were prepared through covalently coupling of chitosan (CS) to activate nylon membrane after the reaction of the microporous nylon membrane with formaldehyde. Non-specific adsorption on the CS-coated nylon membrane decreased greatly. Yellow 3G-P/Reactive Red 120 were then covalently immobilized onto composite membrane as dye ligands. These Red 120/Yellow 3G-P-CS-membranes were used...
Electrospun nylon-6 nanofibrous membrane with fiber diameters in the range of 50-200 nm were prepared and employed as affinity membrane material for papain adsorption due to their excellent chemical and thermal resistance as well as high wettability. In this work, covalent coupling of chitosan (CS) to activated nylon membrane was performed after the reaction of the nanofibrous nylon membrane with...
Electrospun poly (L-lactic acid) (PLLA) and poly (L-lactide -co -glycolide) (PLGA) mats were fabricated as wound dressings. The in vitro degradation behavior was studied in phosphate buffer solution (PBS, pH 7.4) at 37degC for 6 days. Structural and morphological changes during degradation were investigated with gel permeation chromatography (GPC) and scanning electron microscopy (SEM). Both of the...
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