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Curing of Unsaturated Polyester: Network Formation

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R. F. Toorkey , K. C. Rajanna and P. K. Sai Prakash

Osmania University, Hyderabad-500 007, India

J. Chem. Educ., 1996, 73 (4), p 372

DOI: 10.1021/ed073p372

Publication Date (Web): April 1, 1996

Section:

History, Education, and Documentation

Abstract

Unsaturated polyester resins in styrene as comonomer solvent gels to a thermoset stageby network formation due to free radicals produced by the redox reaction between cobalt octoate (promoter) and methyl ethyl ketone peroxide (MEKP) as initiator. Gel times can be reduced or enhanced by the use of N,N-Dimethyl aniline (DMA) or pyridine respectively. The technique of hand lay-up for producing glass reinforced fiber (GRF) is described.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Polymer Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Polymerization

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This article has been cited by 2 ACS Journal articles (2 most recent appear below).

Studying Thermally Induced Chemical and Physical Transformations in Common Synthetic Polymers: A Laboratory Project
Steven C. Hodgson , John D. Orbell and Stephen W. Bigger , John Scheirs
Journal of Chemical Education2000 77 (6), 745
- Studying Thermally Induced Chemical and Physical Transformations in Common Synthetic Polymers: A Laboratory Project
  Steven C. Hodgson , John D. Orbell and Stephen W. Bigger , John Scheirs
  Journal of Chemical Education2000 77 (6), 745
  A simple project is described for introducing students to some experimental procedures commonly used to measure the effects of thermal treatment on synthetic polymers. The thermally induced changes that occur in the commodity polymers low-density ...
  Abstract | Hi-Res PDF | PDF w/ Links
Reticulation Study and Molding of Unsaturated Polyester Composites
Sophie Bistac
Journal of Chemical Education1999 76 (11), 1533
- Reticulation Study and Molding of Unsaturated Polyester Composites
  Sophie Bistac
  Journal of Chemical Education1999 76 (11), 1533
  This paper describes a laboratory experiment involving polyester composites, and especially sheet molding compounds (SMC), to investigate several aspects of composite science. The SMC contain an unsaturated polyester resin (blended with styrene monomer), ...
  Abstract | Hi-Res PDF | PDF w/ Links