The morphology of polyvinylpyrrolidone nanofibers containing Anredera cordifolia leaves

Abstract

The electrospinning method has been used successfully to make polyvinylpyrrolidone nanofiber containing Anredera cordifolia leaves (BLE). The research methods used were qualitative and pure experiment method. Polyvinilpirolidone nanofibers containing BLE were prepared with three mass variations of the polyvinylpyrrolidone (% w/w), namely 12%, 10%, and 8% w/w, respectively. The results of the macroscopic photo show that the fiber structure looks white for PVP nanofibers and yellow for PVP/BLE nanofibers. The fiber morphology was analyzed using SEM and the results showed that PVP and all PVP/BLE nanofibers were like a continuous strand of crossbars with a diameter of 590 – 1190 nm. The decrease in the concentration of the PVP polymer led to a reduction in the diameter of the resulting nanofibers. The coefficients of variance (ε), of the PVP, BLE1, BLE2, and BLE3 nanofibers were 0.06, 0.09, 0.11, and 1.22, respectively. The physicochemical structure of the nanofibers was evaluated using XRD and FTIR. The chemical analysis (FTIR) showed that there was a molecular interaction between Anredera cordifolia leaves extract and polyvinylpyrrolidone in the form of hydrogen bonds. The physics analysis (XRD) shows the effect of the electrospinning process, which is to change the structure of BLE crystals to semi crystals. The application of PVP/BLE nanofiber for wounds dressing

Dielectric Properties and Flexibility of Polyacrylonitrile/Graphene Oxide Composite Nanofibers

“…High voltages can cause an imbalance between precursor loading and load-induced spinning. 55 As a result, one or more side jets are formed to produce fibers of inconsistent size. From the statistical analysis, there was significant ( p < 0.05) between GN1 and GN2, and there was significant ( p < 0.05) between GN1 and GN3.…”

“…Another factor that might contribute to the lower homogeneity is the use of a high voltage of 12 kV. High voltages can cause an imbalance between precursor loading and load-induced spinning . As a result, one or more side jets are formed to produce fibers of inconsistent size.…”

Preparation of PAN/PVDF Nanofiber Mats Loaded with Coconut Shell Activated Carbon and Silicon dioxide for Lithium-Ion Battery Anodes

“…The PAN/PVDF/SiO 2 -CCS composite nanofiber exhibited features different from the changes in the infrared spectral peaks shown in Figure 6d. Strong interactions of N H stretching and C O stretching were observed in the ranges of 3700-3500 and 1790-1540 cm -1 , respectively, showing the typical pattern of PAN/PVDF (Sriyanti et al, 2023) . The overlapping absorption bands located between 3200-2750 and 2430-2330 cm -1 , associated with the C H stretching vibrations of alkane groups, experienced slight strengthening due to interference from CCS molecular interactions (Kanjana et al, 2021;Rodrigues et al, 2020).…”

“…The presence and interaction of PAN and PVDF in the composite matrix are indicated by the overlapping peaks in the C O band region at approximately 1740 cm -1 and N C N amine group at 1643 cm -1 (Mohammed et al, 2021) . The strong peak at 879 cm -1 was determined to be the dominant 𝛼 phase, especially in the PAN/PVDF nanofiber, and the influence of the PVDF phase was observed in the bands around 879 and 784 cm -1 , representing the 𝛼 and 𝛽 phases, respectively (∼1450, 1404, 1181, 1072, 841 cm -1 ) (Sriyanti et al, 2023) . The PAN/PVDF/SiO 2 -CCS composite nanofiber exhibited features different from the changes in the infrared spectral peaks shown in Figure 6d.…”

Peningkatan Kualitas Air Bersih Masyarakat Desa Muara Penimbung Ilir dengan Memanfaatkan Teknologi Nanofiber

“…Penerapan teknologi ini akan menghasilkan struktur membran filter air yang lebih baik dibandingkan dengan filter komersial. Selain itu, filter berbasis nanofiber memiliki keuntungan seperti porositas tinggi, berat dasar rendah, luas permukaan tinggi, dan jumlah pori banyak (Baby & Hussein, 2020;Jauhari et al, 2021;Sriyanti et al, 2017Sriyanti et al, , 2021. Filter membran nanofiber memungkinkan mencapai fluks yang lebih tinggi tanpa mengorbankan partikel lain.…”