Electrospun carboxylic-functionalized poly(arylene ether ketone) ultrafine fibers

Abstract

As a high-performance polymer, carboxylic-functionalized poly(arylene ether ketone)s (PCA-PAEK) was electrospun into ultrafine fibers and characterized. To optimize the process, a set of experiments were designed. As a result, the optimum condition was obtained and the polymer concentration was determined as the most important factor. Incidentally, the PCA-PAEK fibers were found to exhibit superabsorbent behavior. In order to investigate processing characteristics, PCA-PAEK fibers fabricated from different solution concentrations were employed and characterized. The results showed that porosity and changes in water contact angle and water absorbency decreased with an increase in concentration. In addition to a high water absorption capacity, the fibers exhibited good water retention and repeated water absorbency as well. The study on kinetics of water absorption and swelling behavior showed that the mechanism was dependent on the polymer concentration from which the fibers were electrospun. Moreover, both dry and wet PCA-PAEK fibers showed high mechanical properties. Due to these properties, the PCA-PAEK ultrafine fibers are potentially useful as a water-absorbent material.

Electrospun porous hybrid CuO/CdO nanofibers using carboxylic-functionalized poly(arylene ether ketone)s as a template for glucose determination

“…It was interesting that the fiber diameter was decreased from 1.692 to 0.814 mm in the immersing process. It has been reported in our previous work 40 that when the concentration of PCA-PAEK was 20%, diffusion process was consistent with the Fickian diffusion mechanism. When liquid contacted with the fiber webs, fibers with bigger diameter were relatively more stable and tended to maintain a constant structure thus preventing additional swelling.…”

“…Introduction of −COOH improves the solubility and chemical activity of PAEK. In our previous work, 40 PCA-PAEK has been fabricated into ultrafine fibers and the optimum condition has been confirmed. However, as far as we know, it has never been used as a template to prepare CuO/CdO composite NFs.…”

“…Carboxylic-functionalized poly(arylene ether ketone) (PCA-PAEK) ( Figure 1) is a modified high performance polymer originate from PAEK. 40 Carboxyl groups are introduced on the polymer side chain. Introduction of ÀCOOH improves the solubility and chemical activity of PAEK.…”

Highly aligned magnetic composite nanofibers fabricated by magnetic-field-assisted electrospinning PAN/FeCo solution

“…To date, in most of the studies performed, electrospun magnetic nanofibers were often deposited on the collector surface as randomly oriented nonwoven mats, which could be unsatisfactory depending on some of their applications. 14 –16 Intense research has demonstrated that aligned nanofiber structures possessing well-controlled porosity 17 can effectively improve the mechanical integrity 18 and show unique electric and magnetic properties. 19 Among the synthesis methods of ordered nanofibers, 20 –23 the magnetic-field-assisted electrospinning (MFAES) method has been widely employed due to the advantages of simple equipment, easy handling, large production, and so on.…”

Super-Absorbent Fabric: In Situ Polymerization of Macroporous Starch-Sodium Alginate Hydrogel on Fiber Surface

“…It was found that when the bath ratio was 1:25 and the alkali concentration was 7.5%, super-absorbent fabric with SR of 343 g/g could be obtained, which exceeded the reported water absorption capacity of commercial superabsorbent bers, super-absorbent poly (arylene ether ketone) bers and super-absorbent cellulose nano bers (Fig. 5c) ( Liu et al 2015, Petroudy et al 2021). But the SR of super-absorbent fabric in this work to normal saline and synthetic urine was only 36 g/g and 30 g/g.…”