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AntiPlasticization in the Glassy States of Poly(Vinyl Butyral) and Poly(2,6-Dimethyl Phenylene Oxide)

Published online by Cambridge University Press:  16 February 2011

Anthony A. Parker ,
Yang T. Shieh  and
William M. Ritchey
Anthony A. Parker
Affiliation:
Libbey Owens Ford Company, 1701 E. Broadway, Toledo, OH 43605
Yang T. Shieh
Affiliation:
Beloit Manhattan Inc., Clarks Summit, PA
William M. Ritchey
Affiliation:
Case Western Reserve University, Dept. of Chemistry, Cleveland, OH 44106
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Abstract

Solid state NMR and dynamic mechanical analysis (DMA) techniques have been used to study the “antiplasticization” effects of dihexyladipate (DHA) and tricresylphosphate (TCP) on poly(vinyl butyral-co-vinyl alcohol) (PVB) and poly(2,6-dimethyl phenylene oxide) (PPO) respectively. The DHA and TCP diluents decrease the primary viscoelastic transition temperatures (ax processes) along with their apparent activation energies [1,2] However, glassy state mechanical transitions (P processes) are characterized by increased activation energies. Similarly, carbon T1, T1p, and inversion recovery cross polarization (IRCP) experiments generally show that DHA and TCP suppress motion in the MHz, KHz, and near static frequency regimes. These results collectively suggest that the extent of antiplasticization is dependent on both the frequency regime of observation, and the morphology of the polymers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 215: Symposium R2 – Structure, Relaxation and Physical Aging of Glassy Polymers , 1990 , 119
Copyright
Copyright © Materials Research Society 1991

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