Polymeric Hydrocarbons with Pendant Groups
Amorphous atactic polymers with bulky pendant groups, such as polystyrene (PS), which has the following repeating unit, Open image in new window are less flexible at ordinary temperatures than low-density polyethylene (ldpe) or high-density polyethylene (hdpe). In addition to its steric hindrance effect, the flat phenyl group in PS also increases the intermolecular forces because of its weak polarity. However, the kinetic energy at higher temperatures exceeds the weak intermolecular forces, so this commercial polymer is a readily moldable thermoplastic.
KeywordsVinyl Chloride Solubility Parameter Polyvinyl Acetal Linear Expansion Pendant Group
Unable to display preview. Download preview PDF.
- R. B. Bishop, Practical Polymerization for Polystyrene, CBI, Boston, Mass. (1971).Google Scholar
- R. H. Burgess, Manufacture and Processing of PVC, Macmillan, New York (1981).Google Scholar
- L. Nass, Encyclopedia of PVC, Dekker, New York, Vol. 1 (1976), Vols. 2 and 3 (1977).Google Scholar
- J. G. Pritchard, Polyvinyl Alcohol, Gordon and Breach, New York (1970).Google Scholar
- H. Raech, Allylic Resins and Monomers, Krieger, Melbourne, Fla. (1965).Google Scholar
- I. D. Rubin, Poly(One-Butene), Its Preparation and Properties, Gordon and Breach, New York (1968).Google Scholar
- C. E. Schildknecht, Allyl Compounds and Their Polymers: Including Polyolefins, Wiley, New York (1973).Google Scholar
- R. B. Seymour, Plastics vs. Corrosives, Wiley, New York (1982).Google Scholar
- R. B. Seymour, Modern Plastics Technology, Reston Publishing, Reston, Va. (1975).Google Scholar
- R. A. Wessling, ed., Polyvinylidene Chloride, Gordon and Breach, New York (1977).Google Scholar