Thermal analysis FTIR spectroscopy of poly(ε-caprolactone)

Abstract

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Design and manufacture of neural tissue engineering scaffolds using hyaluronic acid and polycaprolactone nanofibers with controlled porosity

“…Figure 1 shows the FTIR of PCL, HA and PCL/HA blend. , which are corresponding to the stretching vibrations of bond and bonds [41][42][43], the absorption peak at 1610 indicates the presence of amid II group and the peak at 2900 is due to the C-H stretching bond. Existence of another peak at 3400 confirms the presence of O-H stretching bond and amino group [43,44].…”

Parametric optimization of polycaprolactone synthesis catalysed by Candida antarctica lipase B using response surface methodology

“…Bands located between 600 to 1600 cm −1 , as we can see are all overlapped and difficult to explain individually. They usually belong to the ester group during trans‐isomerization and due to the stretching of methyl groups of PCL . Synthesised PCL peaks are almost same to that of neat PCL having all the characteristics peaks of PCL.…”

“…They usually belong to the ester group during trans-isomerization and due to the stretching of methyl groups of PCL. [30] Synthesised PCL peaks are almost same to that of neat PCL having all the characteristics peaks of PCL. Except the intensity of peaks from the 600 to 1600 cm −1 which is low.…”

“…Except the intensity of peaks from the 600 to 1600 cm −1 which is low. This can be due to the difference in the intensity of crystallization …”

Physicochemical Characterization and Cell Adhesion Evaluation of Poly-ε-Caprolactone/BNNT Nanofibers Produced through Electrospinning Process

“…BNNTs have characteristics bands which are a strong asymmetric band centered at 1380 cm −1 , which corresponds to the bond B-N stretch, along with a less intense band at 790 cm −1 attributed to B-N-B bond [26]. The main absorption bands in the infrared for nPCL are 2949 cm -1 and 2865 cm -1 associated with asymmetrical and symmetrical stretching of CH 2 , respectively, 1727 cm -1 associated with the stretching of the carbonyl, 1293 cm -1 to CO and CC stretching in the crystalline phase, 1240 cm -1 associated with the COC asymmetric stretching and 1170 cm -1 associated with the COC symmetrical stretching [27,28].The presence of the band at 790 cm -1 in the nPCL/BNNTs indicates again the presence of BNNT in the nPCL.…”