Thermal degradation of poly(lactic acid) measured by thermogravimetry coupled to Fourier transform infrared spectroscopy

2009 ◽  
Vol 97 (3) ◽  
pp. 929-935 ◽  
Author(s):  
Hantao Zou ◽  
Changhai Yi ◽  
Luoxin Wang ◽  
Hongtao Liu ◽  
Weilin Xu
2019 ◽  
Vol 50 (3) ◽  
pp. 415-424 ◽  
Author(s):  
Muhammad Mushtaq ◽  
Hina Saba ◽  
Weiwei Wang ◽  
Muhammad A Naeem ◽  
Qufu Wei

Poly(lactic acid)/hexadecyl trimethyl ammonium chloride-modified montmorillonite clay nanofiber membranes have been fabricated by the electrospinning technique. The nanofiber membranes were then characterized by scanning electron microscopy and Fourier transform-infrared spectroscopy. Nanofiber membranes with different ratios of Poly(lactic acid) and hexadecyl trimethyl ammonium chloride-modified montmorillonite have been spun by varying voltage supply during electrospinning. These parameters were found to have a substantial effect on the morphologies of these membranes. It was found that 8% (w/w) Poly(lactic acid)/hexadecyl trimethyl ammonium chloride-modified montmorillonite concentration is an ideal condition to obtain thinner and uniform Poly(lactic acid) fibers. The results also suggested the coexistence of exfoliated hexadecyl trimethyl ammonium chloride-modified montmorillonite layers over the studied hexadecyl trimethyl ammonium chloride-modified montmorillonite contents. Fourier transform-infrared spectroscopy revealed that there might be possible interactions between the hexadecyl trimethyl ammonium chloride-modified montmorillonite clay and Poly(lactic acid) matrix.


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