A rheo-optical FTIR spectrometer for investigating molecular orientation and viscoelastic behavior in polymers

International Journal of Polymer Analysis and Characterization

Volumn 9, Issue 4, 2004, Pages 245-274

  Hofmann, Gerald R ^a   Sevegney, Michael S ^a   Kannan, Rangaramanujam M ^a  

^a Wayne State University   (United States)

Author keywords

FTIR spectroscopy; Polymer structure property relationships; Rheo optics

Indexed keywords

POLYMER; POLYPROPYLENE; POLYURETHAN;

ANALYTIC METHOD; ARTICLE; CHEMICAL MODEL; CHEMICAL STRUCTURE; CRYSTAL STRUCTURE; FLOW MEASUREMENT; INFRARED RADIATION; INFRARED SPECTROSCOPY; MOLECULAR DYNAMICS; POLARIMETRY; QUANTITATIVE ANALYSIS; SENSITIVITY ANALYSIS; SIGNAL DETECTION; STRUCTURE ANALYSIS; VISCOELASTICITY;

EID: 18944386065     PISSN: 1023666X     EISSN: None     Source Type: Journal    
DOI: 10.1080/10236660490920237     Document Type: Article

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82. No sample is being stretched during calibration, thus further signal processing (at 20 Hz) is unnecessary.
83. It should also be noted that during open-beam conditions, the lock-in amplifier phase angle is adjusted to provide maximum signal output through a single ("in-phase") channel.