Crystallinity changes in lyocell and viscose-type fibres by caustic treatment

2002 ◽  
Vol 38 (11) ◽  
pp. 2225-2230 ◽  
Author(s):  
X Colom ◽  
F Carrillo
Keyword(s):  
Caustic Treatment ◽  
Crystallinity Changes

Tracking Crystallinity Changes in PFSA Polymers During Ex-Situ Peroxide Degradation

2019 ◽  
Vol 11 (1) ◽  
pp. 1157-1164 ◽  
Author(s):  
Niccolo V. Aieta ◽  
Jennifer E. Leisch ◽  
Monica M. Santos ◽  
Michael Yandrasits ◽  
Steven Hamrock ◽  
...  
Keyword(s):  
Ex Situ ◽  
Crystallinity Changes

Comparative Analysis of Crystallinity Changes in Cellulose I Polymers Using ATR-FTIR, X-ray Diffraction, and Carbohydrate-Binding Module Probes

2011 ◽  
Vol 12 (11) ◽  
pp. 4121-4126 ◽  
Author(s):  
Alenka Kljun ◽  
Thomas A. S. Benians ◽  
Florence Goubet ◽  
Frank Meulewaeter ◽  
J. Paul Knox ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Carbohydrate Binding ◽  
Carbohydrate Binding Module ◽  
X Ray Diffraction ◽  
Cellulose I ◽  
X Ray ◽  
Crystallinity Changes

Crystallinity changes during PVC processing

1989 ◽  
Vol 37 (6) ◽  
pp. 1713-1726 ◽  
Author(s):  
O. P. Obande ◽  
M. Gilbert
Keyword(s):  
Crystallinity Changes

scholarly journals A microhardness test to detect crystallinity changes in stabilized rigid PVC

1986 ◽  
Vol 6 (5) ◽  
pp. 361-367 ◽  
Author(s):  
A González ◽  
B Martin ◽  
M Muñoz ◽  
J.A de Saja
Keyword(s):  
Microhardness Test ◽  
Rigid Pvc ◽  
Crystallinity Changes

scholarly journals Development and Characterization of Novel Polyurethane Films Impregnated with Tolfenamic Acid for Therapeutic Applications

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Hilal Istanbullu ◽  
Sofia Ahmed ◽  
Muhammad Ali Sheraz ◽  
Ihtesham ur Rehman
Keyword(s):  
Polymer Concentration ◽  
Tolfenamic Acid ◽  
Degree Of Crystallinity ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Release Studies ◽  
Evaporation Technique ◽  
Crystallinity Changes ◽  
The Degree Of Crystallinity

The present study deals with the preparation of polyurethane (PU) films impregnated with a nonsteroidal anti-inflammatory drug, tolfenamic acid (TA). Solvent evaporation technique has been employed for the preparation of TA-PU films in two different ratios of 1 : 2 and 1 : 5 in Tetrahydrofuran (THF) or THF-ethanol mixtures. The prepared films were characterized using X-Ray Diffraction (XRD), Differential Scanning Calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and release studies. The results indicate transformation of crystalline TA to its amorphous form. The degree of crystallinity changes both by increasing the polymer concentration and solvent used for the film preparations. The release profiles of TA were also found to be affected, showing a decrease from approximately 50% to 25% from 1 : 2 to 1 : 5 ratios, respectively.

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