Internal structural changes in keratin fibres resulting from combined hair waving and stress relaxation treatments: a Raman spectroscopic investigation

2015 ◽  
Vol 38 (2) ◽  
pp. 201-209 ◽  
Author(s):  
A. Kuzuhara
Keyword(s):  
Stress Relaxation ◽  
Spectroscopic Investigation ◽  
Structural Changes ◽  
Raman Spectroscopic ◽  
Keratin Fibres

Effects of accelerator type on stress relaxation behavior and network structure of aged natural rubber/chloroprene rubber vulcanizates

2016 ◽  
Vol 49 (5) ◽  
pp. 381-396 ◽  
Author(s):  
Farzad A Nobari Azar ◽  
Murat Şen
Keyword(s):  
Stress Relaxation ◽  
Natural Rubber ◽  
Network Structure ◽  
Structural Changes ◽  
Relaxation Behavior ◽  
Stress Relaxation Behavior ◽  
Rubber Blends ◽  
Chloroprene Rubber ◽  
Weather Changes ◽  
Behavior Network

Natural rubber/chloroprene rubber (NR/CR) blends are among the commonly used rubber blends in industry and continuously are exposed to severe weather changes. To investigate the effects of accelerator type on the network structure and stress relaxation of unaged and aged NR/CE vulcanizates, tetramethyl thiuram disulfide, 2-mercaptobenzothiazole, and diphenyl guanidine accelerators have been chosen to represent fast, moderate, and slow accelerator groups, respectively. Three batches have been prepared with exactly the same components and mixing conditions differing only in accelerator type. Temperatures scanning stress relaxation and pulse nuclear magnetic resonance techniques have been used to reveal the structural changes of differently accelerated rubber blends before and after weathering. Nonoxidative thermal decomposition analyses have been carried out using a thermogravimetric analyzer. Results indicate that there is a strong interdependence between accelerator type and stress relaxation behavior, network structure, cross-linking density, and aging behavior of the blends. Accelerator type also affects decomposition energy of the blends.

Raman spectroscopic investigation on high refractive index glasses prepared from local quartz sand

2009 ◽  
Vol 73 (3) ◽  
pp. 440-442 ◽  
Author(s):  
P. Dararutana ◽  
S. Pongkrapan ◽  
N. Sirikulrat ◽  
M. Thawornmongkolkij ◽  
P. Wathanakul
Keyword(s):  
Refractive Index ◽  
Quartz Sand ◽  
Spectroscopic Investigation ◽  
High Refractive Index ◽  
Raman Spectroscopic

Raman Spectroscopic Investigation of Dyes in Spices

2010 ◽  
Author(s):  
Ute Uhlemann ◽  
Anuradha Ramoji ◽  
Petra Rösch ◽  
Paulo Augusto Da Costa Filho ◽  
Fabien Robert ◽  
...  
Keyword(s):  
Spectroscopic Investigation ◽  
Raman Spectroscopic

scholarly journals Raman spectroscopic investigation of acetylation of raw cotton

2006 ◽  
Vol 64 (2) ◽  
pp. 448-453 ◽  
Author(s):  
M.O. Adebajo ◽  
R.L. Frost ◽  
J.T. Kloprogge ◽  
S. Kokot
Keyword(s):  
Spectroscopic Investigation ◽  
Raman Spectroscopic
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