14.6 Diene Polymers: Natural and Synthetic Rubbers
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Polymer additives: III. Surface property and processing modifiersStevens, Malcolm P. The final installment of a three-part paper on the subject of polymer additives. Some of the properties these additives bring to polymers are: anti-blocking agents, anti-fogging agents, antistatic agents, coupling and releasing agents, blowing and crosslinking agents, defoaming agents, emulsifiers, and heat stabilizers. Stevens, Malcolm P. J. Chem. Educ.1993, 70, 713.
Polymerization |
Materials Science |
Applications of Chemistry |
Consumer Chemistry
Identifying polymers through combustion and density Blumberg, Avrom A. Using analytical chemistry class experiences as a way to not only quantitatively and qualitatively analyze substances, but also to gain practical experience with characteristic chemical reactions of those substances. Blumberg, Avrom A. J. Chem. Educ.1993, 70, 399.
Addition PolymersEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Polymerization
Condensation PolymersEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Polymerization
Copoly; A Tool for Understanding Copolymerization and Monomer Sequence Distribution of CopolymersMassoud Miri, Juan A. Morales-Tirado The study of the composition and monomer sequence distribution of binary copolymers is often complicated because of the many definitions of representative properties for the sequence distribution, the numerous calculations required, and occasionally the abstract treatment of the statistical processes describing the copolymer formation. Copoly resolves these issues with a user-friendly, highly visual interface to perform all calculations. Using Microsoft Excel and Word, Copoly is compatible with Windows and Mac OS. In Copoly the students enter up to five independent data parameters using the Data Input Window, and immediately see the results. To obtain diagrams for a copolymerization obeying a second-order Markovian process, the fraction of one monomer, A, and the reactivity ratios, rA, rB, rA´ and rB´ need to be entered; for a first-order Markovian process only the first three of these are required. For a Bernoullian- or zeroth-order Markovian process only A and rA are required. The results are displayed on separate sheets labeled: 1. Copolymerization Diagrams, 2. Dyads and Triads, 3. Sequence Length Distribution, 4. Simulated Copolymer Design, and 5. Summary.
