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Analysis of the linear methods of determining copolymerization reactivity ratios, 9. Penultimate systems with r2 = 0 by Kelen, Tibor ;Tüdős, Ferenc ;Braun, Dietrich ;Czerwinski, Wojciech K. is a Chemistry article available to read on EtoBox.
What is Analysis of the linear methods of determining copolymerization reactivity ratios, 9. Penultimate systems with r2 = 0 about?
## Abstract The copolymerization equation considering the penultimate unit effect, the so called penultimate model, takes a simplified shape in the case of __r__~2~ = 0 (monomer 2, M~2~, does not homopolymerize). For this case a method analogous to the conventional KT(Kelen‐Tüdős)‐transformation for estimation of __r__~1~ and __r__~1~′ is proposed. The new method was verified by literature data for the system styrene/fumarodinitrile, polymerized with benzoyl peroxide at 70°C, yielding __r__~1~ = 0,062 and __r__~1~′ = 0,812. Classification of copolymerization curves by means of the classical copolymerization model permits to distinguish between three curve‐types: __r__~1~ 2 (non alternating system). The penultimate model permits to generate further curve‐types of “S”‐shape with __r__~1~ > 2 and __r__~1~′ > 2 or __r__~1~ > 2 and __r__~1~′ < 2 (__r__~1~ = __r__~1~′ for classically behaving systems and __r__~1~ ≠ __r__~1~′ for non‐classically behaving systems).
Who reads Analysis of the linear methods of determining copolymerization reactivity ratios, 9. Penultimate systems with r2 = 0?
It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- Kelen, Tibor ;Tüdős, Ferenc ;Braun, Dietrich ;Czerwinski, Wojciech K.
- Publisher
- Wiley (John Wiley & Sons); Wiley (ISSN 0025-116X)
- Published
- 1990
- Language
- EN
- Field
- Chemistry (Physical Sciences)