An approach to a simplified universal calibration for gel permeation chromatography

✍ Scribed by B. L. Funt; V. Hornof

• Publisher: John Wiley and Sons
• Year: 1971
• Tongue: English
• Weight: 360 KB
• Volume: 15
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1971.070151010

✦ Synopsis

Criteria for establishing a universal GPC calibration for poly-1,Zbutadiene on the basis of polystyrene standards are considered. The number-average molecular weights of the two polymers are related by a linear expression on the assumption that their respective Mark-Houwink exponents are equal. The coefficient C, of this expression, determined from GPC and viscosity measurements, remained constant for a considerable range of molecular weights and polydispersities. The applicability of C , beyond the interval of present measurements is considered on the basis of results in the literature. The results are comparable to those obtained from a universal calibration based on the unperturbed dimension of polymer chains, hiit do not agree with those obtained from a model based on extended length.