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Ultrasonic investigation on compatibility of PVC-modified liquid natural rubber blends

✍ Scribed by George V. Thomas; M. R. Gopinathan Nair

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 166 KB
Volume: 69
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19980725)69:4<785::aid-app17>3.0.co;2-o

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✦ Synopsis

The extent of compatibility of the blend solutions poly(vinyl chloride)liquid natural blends (PVC-LNR), PVC-expodized LNR-20 (PVC-ELNR-20), and PVC-ELNR-50 has been studied using an ultrasonic technique. The variation of ultrasonic velocity with composition is nonlinear in the case of blends of PVC-LNR and PVC-ELNR-20, showing incompatibility. The ultrasonic velocity versus composition plot for PVC-ELNR-50 showed linear behavior showing compatibility. The above behavior was confirmed by heat of mixing calculations as well as ultrasonic attenuation measurements.

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