Accession Number : ADA265304


Title :   Polymer-Polymer Interactions


Descriptive Note : Final rept. 15 Sep 1989-14 Nov 1992


Corporate Author : TEXAS UNIV AT AUSTIN


Personal Author(s) : Sanchez, Isaac C ; Paul, Donald R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a265304.pdf


Report Date : May 1993


Pagination or Media Count : 16


Abstract : Our approach for understanding polymer-polymer interactions is to measure heats of mixing of small molecule analogs. In particular, we have focused on small molecule analogs of polystyrene (PS) and Poly (2, 6 dimethyl phenylene oxide) (PPO). this well-known system is miscible, but the origin of its miscibility has perplexed investigators for over 25 years. Our measurements and associated molecular mechanics/Monte Carlo calculations have firmly established that the two methyl groups on PPO play a significant role in affecting miscibility. We have developed two equation of state models for hydrogen bonding interactions. They represent a significant advance in our understanding of hydrogen bonding interactions in both polymeric and non- polymeric systems. The models have been successfully applied to a variety of systems that include supercritical fluids. solubility of gases in liquid polymers has been treated theoretically using the lattice-fluid model.


Descriptors :   *INTERACTIONS , *POLYSTYRENE , COMPRESSION , MEASUREMENT , POLARIZATION , LIQUIDS , THERMODYNAMICS , GASES , SOLVENTS , HYDROSTATIC PRESSURE , CHLORINATED HYDROCARBONS , HEAT , SOLUBILITY , MIXING , SUPERCRITICAL FLOW , FLUIDS , HYDROCARBONS , MONTE CARLO METHOD , POLYMERS , MOLECULES , HYDROGEN BONDS , MODELS , METHYL RADICALS


Subject Categories : Organic Chemistry
      Polymer Chemistry
      Thermodynamics


Distribution Statement : APPROVED FOR PUBLIC RELEASE