| Autor: |
Freire, Leonardo Almeida, Lemos, Ana Carolina Cortez, Miranda, Kelvi Wilson Evaristo, da Silva, Joaquim Paulo, de Oliveira, Juliano Elvis |
| Předmět: |
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| Zdroj: |
Polymer Engineering & Science; Aug2022, Vol. 62 Issue 8, p2511-2523, 13p |
| Abstrakt: |
Solution blow spinning (SBS) is used to make poly(butylene‐adipate‐co‐terephthalate) (PBAT) and poly(vinylpyrrolidone) (PVP) blend nanofibers and study the effect of process parameters on their formation. A 34–1 fractional factorial statistical model with three levels and four factors was applied. The factors included the concentration of PVP (wt%) in the PBAT polymer matrix, pressurized air pressure (psi), working distance (cm), and feed rate (ml h−1). The linear and quadratic effects were analyzed using a Pareto chart and verified in a well‐adjusted response surface model. The PVP concentration and working distance had a significant effect on the production of nanofibers. The nanofibrous mats were evaluated by scanning electron microscopy (SEM) and had a mean diameter ranging from 164 to 656 nm. A higher concentration of PVP and a shorter working distance resulted in lower mean fiber diameter. In addition, X‐ray diffraction revealed an increase in the degree of crystallinity of the nanofibrous PBAT due to a greater degree of packing among the polymer molecules. However, the addition of PVP to the polymer matrix is associated with a reduction in the degree of crystallinity of the nanofibrous mat. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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