Materials characterization of explanted polypropylene, polyethylene terephthalate, and expanded polytetrafluoroethylene composites: Spectral and thermal analysis

Author(s):  
Matthew J. Cozad ◽  
David A. Grant ◽  
Sharon L. Bachman ◽  
Daniel N. Grant ◽  
Bruce J. Ramshaw ◽  
...  
2019 ◽  
Vol 678 ◽  
pp. 178303 ◽  
Author(s):  
Kun Zhang ◽  
Alberto Grimoldi ◽  
Laura Rampazzi ◽  
Antonio Sansonetti ◽  
Cristina Corti
Keyword(s):  

2019 ◽  
Vol 34 (5) ◽  
pp. 854-859 ◽  
Author(s):  
Sofia Pessanha ◽  
Sara Silva ◽  
Luís Martins ◽  
José Paulo Santos ◽  
João M. Silveira

In this work, we established a methodology for the analysis and characterization of hydroxyapatite-based materials using X-ray fluorescence.


2011 ◽  
Vol 47 (2) ◽  
pp. 105-112 ◽  
Author(s):  
P. Sulcová ◽  
P. Bystrzycki ◽  
L. Válek ◽  
M. Trojan

A series of novel environmentally inorganic pigments based on Bi2O3 doped by metal ions such as Zr4+ and Ho3+ have been developed and characterized using of methods of thermal analysis, Xray powder diffraction and CIE L


2004 ◽  
Vol 424 (1-2) ◽  
pp. 201-207 ◽  
Author(s):  
V. Sencadas ◽  
S. Lanceros-Méndez ◽  
J.F. Mano

2021 ◽  
Vol 309 ◽  
pp. 125107
Author(s):  
Zongxian Huang ◽  
Kuisheng Liu ◽  
Jinsong Duan ◽  
Qiang Wang

2010 ◽  
Vol 46 (1) ◽  
pp. 129-134 ◽  
Author(s):  
Mariana Mandelli de Almeida ◽  
Cibele Rosana Ribeiro de Castro Lima ◽  
Joyce Santos Quenca-Guillen ◽  
Elder Moscardini Filho ◽  
Lucildes Pita Mercuri ◽  
...  

In view of the increase in the number of cosmetic preparations containing antioxidant vitamins, chiefly, due to their action in preventing the process of skin aging, there is a need to develop pre-formulation studies and to validate analytical methods in order to obtain high quality products. Thus, the objective of this research was to evaluate and compare the thermal behavior of tocopheryl acetate and ascorbyl tetraisopalmitate as raw materials, and incorporated into a base cream. Thermogravimetry (TG / DTG) and differential scanning calorimetry (DSC) were used for this purpose. Both vitamins were found to be stable up to 250ºC. The base cream (placebo) and the sample (base cream containing the vitamins) presented different weight loss. Thermal analysis has shown itself to be an excellent tool for the characterization of these vitamins and can be used in routine analysis for quality control of this type of cosmetic formulation.


2019 ◽  
Vol 508 (1) ◽  
pp. 289-294 ◽  
Author(s):  
Congcong Liu ◽  
Chao Shi ◽  
Sujie Zhu ◽  
Risheng Wei ◽  
Chang-Cheng Yin

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