Guide Fundamental Principles of Polymeric Materials (3rd Edition)

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Facebook Twitter Pinterest Share. Description Also available on eBook. Click here to purchase from Kobo. About the Author Christopher S. His research interests include stimuli-responsive polymers, composite materials with magnetic nanoparticles, targeted block copolymer micelles, gels and networks for drug delivery, and microencapsulation.

Previously, Dr. Stephen L.

Fundamental principles of polymeric materials (new)

Rosen authored the two previous editions of Fundamental Principles of Polymeric Materials. More Details Contributor: Christopher S.

Free Returns We hope you are delighted with everything you buy from us. However, if you are not, we will refund or replace your order up to 30 days after purchase. Terms and exclusions apply; find out more from our Returns and Refunds Policy. These boundaries are evident in Figure 4. A characteristic Maltese cross pattern appears within each spherulite.

Fundamental Principles of Polymeric Materials Society of Plastics Engineers Monographs

Spherulites are considered to be the polymer analogue of grains in polycrystal- line metals and ceramics. However, as discussed above, each spherulite is really composed of many different lamellar crystals and, in addition, some amorphous material. Polyethylene, polypropylene, polyvinyl chloride, polytetrafluoroethylene, and nylon form a spherulitic structure when they crystallize from a melt.

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These macromolecules may be thought of as being composed of mers, smaller structural entities, which are repeated along the chain. Mer structures of some of the chemically simple polymers e. Molecular weights for high polymers may be in excess of a million. Since all molecules are not of the same size, there is a distribution of molecular weights. Molecular weight is often expressed in terms of number and weight averages. Chain length may also be specified by degree of polymerization, the number of mer units per average molecule.

Several molecular characteristics that have an influence on the properties of polymers were discussed. Linear boundaries form between adjacent spherulites, and within each spherulite appears a Maltese cross. Courtesy F.

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Price, General Electric Company. With regard to behavior at elevated temperatures, polymers are classified as either thermoplastic or thermosetting. The former have linear and branched struc- tures; they soften when heated and harden when cooled. In contrast, thermosets, once having hardened, will not soften upon heating; their structures are crosslinked and network.

Book review: Fundamental Principles of Polymeric Materials, 3rd Edition

When the packing of molecular chains is such as to produce an ordered atomic arrangement, the condition of crystallinity is said to exist. In addition to being entirely amorphous, polymers may also exhibit varying degrees of crystallinity; for the latter case, crystalline regions are interdispersed within amorphous areas.

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Crystallinity is facilitated for polymers that are chemically simple and that have regular and symmetrical chain structures.