Results 321 to 330 of about 415,263 (341)
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Polymer, 1993
Abstract Four methods for the nitration of polystyrene are compared: (i) direct nitration with a nitric acid/sulfuric acid mixture; (ii) nitration in carbon tetrachloride with acetyl nitrate; (iii) nitration in N , N ′-dimethylformamide with a nitric acid/sulfuric acid mixture; and (iv) nitration in 3-nitrotoluene with a nitric acid/sulfuric acid ...
Anthony V. Cuncliffe +3 more
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Abstract Four methods for the nitration of polystyrene are compared: (i) direct nitration with a nitric acid/sulfuric acid mixture; (ii) nitration in carbon tetrachloride with acetyl nitrate; (iii) nitration in N , N ′-dimethylformamide with a nitric acid/sulfuric acid mixture; and (iv) nitration in 3-nitrotoluene with a nitric acid/sulfuric acid ...
Anthony V. Cuncliffe +3 more
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Polystyrene modifications. II. Ring‐substituted polystyrenes
Journal of Applied Polymer Science, 1963AbstractRing‐substituted styrenes were prepared and polymerized. They usually had higher glass transition temperatures than polystyrene. In some disubstituted systems the Tg was an additive function of the individual groups. Crystallinities of methyl‐substituted polymers varied, depending upon the ring positions involved.
W. F. Fowler +3 more
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An overview on biodegradation of polystyrene and modified polystyrene: the microbial approach
Critical Reviews in Biotechnology, 2017Polystyrene is a widely used plastic in many aspects of human life and in industries due to its useful characteristics of low cost, light weight, ease of manufacture, versatility, thermal efficiency, durability, and moisture resistance. However, polystyrene is very stable and extremely hard to degrade in the environment after disposal.
Ho, Ba Thanh +2 more
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Faraday Discussions of the Chemical Society, 1974
Abstract Model polystyrene networks have been prepared, at different concentrations in an inert solvent, in such a way that the number of crosslinks is accurately known, and the topology of the network can be varied in a controlled way. The contribution of various network defects to the modulus of the network has been examined.
Geoffrey Allen +2 more
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Abstract Model polystyrene networks have been prepared, at different concentrations in an inert solvent, in such a way that the number of crosslinks is accurately known, and the topology of the network can be varied in a controlled way. The contribution of various network defects to the modulus of the network has been examined.
Geoffrey Allen +2 more
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Stress-Birefringence in Polystyrene
Nature, 1950THE photo-elastic properties of polystyrene at temperatures above its softening point have been investigated earlier1,2, and it has been found that under these conditions the stress-birefringence is in the opposite direction from that found for most other materials.
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Miscibility behaviour of polystyrene and polystyrene derivatives
Die Makromolekulare Chemie, Rapid Communications, 1986Markus Antonietti +2 more
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The Morphology of Polystyrene-Polybutadiene-Polystyrene Three-Block Copolymers
Macromolecules, 1975PEDEMONTE, ENRICO +1 more
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