Effects of Side-Chain on Conformational Characteristics of Poly(3,5-Dimethyl-Phenyl Acrylate) in Toluene at 40℃ | Zendy

Nasrollah Hamidi | Zendy; Stanley Ihekweazu | Zendy; Christopher A. Wiredu | Zendy; Onize H. Isa | Zendy; Kevin Watley | Zendy; Christopher C. Rowe | Zendy; Briante’ Nimmons | Zendy; Alexis Prezzy | Zendy; Traniqua Govan | Zendy; Shane Scoville | Zendy; Quentin Hills | Zendy; Judith D. Salley | Zendy

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Effects of Side-Chain on Conformational Characteristics of Poly(3,5-Dimethyl-Phenyl Acrylate) in Toluene at 40℃

Author(s) -

Nasrollah Hamidi,

Stanley Ihekweazu,

Christopher A. Wiredu,

Onize H. Isa,

Kevin Watley,

Christopher C. Rowe,

Briante’ Nimmons,

Alexis Prezzy,

Traniqua Govan,

Shane Scoville,

Quentin Hills,

Judith D. Salley

Publication year - 2012

Publication title -

advances in chemical engineering and science

Language(s) - English

Resource type - Journals

eISSN - 2160-0392

pISSN - 2160-0406

DOI - 10.4236/aces.2012.24053

Subject(s) - intrinsic viscosity , toluene , viscometer , chemistry , polymer , macromolecule , random coil , polymer chemistry , thermodynamics , viscosity , crystallography , organic chemistry , physics , circular dichroism , biochemistry

The intrinsic viscosity [η] of poly(3,5-dimethylphenylacrylate) (35PDMPA)solutions were evaluated throughout the measurements of the flow times of toluene and polymer solutions by classical Huggins, and Kraemer’s methods using a Cannon-Ubbelohde semi-micro-dilution capillary viscometer in a Cannon thermostated water bath at 40℃ ± 0.02℃. The values of Huggins’ constant estimated ranged from 0.2 to 0.4 which were within expectations. The intrinsic viscosities and molecular weight relationship was established with the two-parameter classical models of Staudinger-Mark-Houwink-Sakurada and Stockmayer-Fixman. Conformational parameter C_∞ and σ indicated 35PDMPA be semi flexible. Also, the rigidity of 35PDMPA was confirmed by Yamakawa-Fuji wormlike theory modified by Bohdanecky. The molecular parameters were estimated and compared. The results showed that 35PDMPA behaves like a semi-rigid polymer in toluene at 40℃ rather than a random coil flexible macromolecule

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