Production and characterization of boron nitride-doped nanofiber mats created through electrospinning

2016 ◽  
Vol 47 (6) ◽  
pp. 993-1005 ◽  
Author(s):  
Yasemin Cakmak ◽  
M Fatih Canbolat ◽  
Enes Cakmak ◽  
Mehmet Dayik
Keyword(s):  
Thermal Stability ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Thermogravimetric Analysis ◽  
Boron Nitride ◽  
Fourier Transform Infrared Spectroscopy ◽  
Fourier Transform Infrared ◽  
Electrospinning Method ◽  
The Fourier Transform ◽  
Nanofiber Mats

The aim of this study was to produce advanced nanofiber mats by adding boron nitride to poly (ɛ-caprolactone) polymer using an electrospinning method and to characterize the resultant structures. Pure poly (ɛ-caprolactone) nanofiber mats and boron nitride-doped nanofiber mats prepared at different concentrations were compared. The morphological structures of the nanofiber mats were examined under a scanning electron microscope, spectroscopic analyses were conducted using Fourier transform infrared spectroscopy, and thermal stability was analyzed using a thermogravimetric analysis method. Successful electrospinning of boron nitride-doped nanofibers at lower voltages was achieved. The thermogravimetric analysis test found that the thermal stability of boron nitride-doped nanofiber mats is higher than that of pure nanofibers, which suggests that the produced composite material could be preferable in applications involving insulation and high temperature. On the other hand, the Fourier transform infrared spectroscopy results indicated that no chemical reaction occurred between boron nitride and the poly (ɛ-caprolactone) nanofibers.

Polystyrene Beads Modified with Ester Group and their Application in N-Heptane/Toluene Separation

2014 ◽  
Vol 1048 ◽  
pp. 423-426
Author(s):  
Huan Yang Yu
Keyword(s):  
Thermal Stability ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Thermogravimetric Analysis ◽  
Fourier Transform Infrared Spectroscopy ◽  
Fourier Transform Infrared ◽  
Ester Group ◽  
Swelling Ratio ◽  
Excellent Thermal Stability ◽  
Polystyrene Beads

Polystyrene beads modified with ester group for the separation of n-heptane/toluene have been successfully prepared. The synthesized beads were characterized by fourier transform infrared spectroscopy and thermogravimetric analysis. The effects of ester group on equillibrium swelling ratio and toluene selectivity were studied. The selective factor firstly increases then decreases with the increasing of ester group content. When the content of ester group is 30%, selective factor reaches maximum, the value is 1.62. Polystyrene beads modified with ester group show excellent thermal stability.

Infrared Spectra of Poly(Methyl Methacrylate) Labeled with Oxygen-18

1979 ◽  
Vol 33 (6) ◽  
pp. 551-555 ◽  
Author(s):  
Stoil Dirlikov ◽  
Jack L. Koenig
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Infrared Spectrum ◽  
Methyl Methacrylate ◽  
Fourier Transform Infrared Spectroscopy ◽  
Infrared Spectra ◽  
Fourier Transform Infrared ◽  
Simple Method ◽  
Poly Methyl Methacrylate ◽  
The Fourier Transform

Fourier transform infrared spectrum of atactic poly(methyl methacrylate) (PMMA) is compared with that of atactic PMMA labeled with 18O in the ester groups. The results obtained define the assignment of the bands associated with vibrations of the ester groups of PMMA. Furthermore, the Fourier transform infrared spectroscopy provides a simple method for obtaining the spectra of “pure” derivatives containing 18O.

scholarly journals The Degree of Deacetylation Chitosan Various Marine Shells

2018 ◽  
Author(s):  
sinardi ◽  
Prayatni Soewondo ◽  
Suprihanto Notodarmojo ◽  
cynthia radiman
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Natural Product ◽  
Fourier Transform Infrared Spectroscopy ◽  
Ir Spectrum ◽  
Fourier Transform Infrared ◽  
Raw Material ◽  
Natural Coagulant ◽  
Degree Of Deacetylation ◽  
The Fourier Transform

Chitosan is a natural product derived from biopolymers such as chitin and cellulose and is found in the exoskeleton of marine sources. Chitosan was produced through 3 subsequent processes i.e. deproteination, demineralization and deacetylation.The aim of this study is to determine degree of deacetylation chitosan. The degree of deacetylation was calculated from IR spectrum using the Fourier Transform Infrared spectroscopy (FTIR). The degree of deacetylation of chitosan from Penaeusmonodon, Scylla sp, and Mytilus virdis linneausshells, were 89.05%, 87.64%, and 77.80%. Marine shells used as raw material of chitosan and enhancement degree of deacetylation potential to be used as natural coagulant.

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