A molecular mechanics investigation into the γ-relaxation of poly(propyl methacrylate)

Molecular mechanics calculations are reported on barriers to rotation in model compounds for poly(propyl methacrylate). The results present strong evidence that the so-called γ-maximum in the mechanical loss measurements must be attributed to hindered rotation around the OCH 2CH 2 bond of the propy...

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Bibliographic Details
Published in:Polymer (Guilford) 1992, Vol.33 (7), p.1359-1362
Main Authors: Heijboer, J., Baas, J.M.A., van de Graaf, B., Hoefnagel, M.A.
Format: Article
Language:English
Subjects:
Applied sciences
barriers to rotation
conformational analysis
Exact sciences and technology
mechanical loss
molecular mechanics
Organic polymers
Physicochemistry of polymers
poly(propyl methacrylate)
Properties and characterization
side group motions
Thermal and thermodynamic properties
γ-relaxation
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Summary:Molecular mechanics calculations are reported on barriers to rotation in model compounds for poly(propyl methacrylate). The results present strong evidence that the so-called γ-maximum in the mechanical loss measurements must be attributed to hindered rotation around the OCH 2CH 2 bond of the propyl group.
ISSN:0032-3861
1873-2291
DOI:10.1016/0032-3861(92)90106-7