摘要:

In the previous paper of this series we considered corrosive degradation of polydiene elastomers subjected to tensile stresses. In this paper other polymer materials will be considered, in particular, semicrystalline polymers in a highly elastic state, viz., high-density polyethylene (HDPE), low-density polyethylene (LDPE), isotactic polypropylene (PP), polyamides of different chemical structure, PE/PP mixtures, and a few others. Besides, data for polymers in the glassy state will also be presented, although they are of lesser interest in regard of the effect of structural strains on reactivity because of the long relaxation times involved.

ISSN:1532-1797    

DOI:10.1080/07366578708078818

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

In the previous review cyclic molecules (model compounds) in reactions not involving ring opening and physical properties of stressed polymers were considered.

ISSN:1532-1797    

DOI:10.1080/07366578708078819

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

Knowledge of polymer composites goes back to antiquity, yet their most spectacular boom, from a scientific point of view, began during the 1960s when their microstructure was studied as it relates to their properties. Modern technology demands newer materials in place of conventional engineering materials. Although concrete is an excellent building material, its use is subject to certain limitations. These include its relatively low tensile strength, a tendency to crack with changes in temperature coupled with moisture absorption, and deterioration due to chemical and physical attack under various environmental conditions. Polymer composites, on the other hand, have outstanding strength and durability which offer several advantages over those of conventional materials.

ISSN:1532-1797    

DOI:10.1080/07366578708078820

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

Although known for a long time, the chloromethyla-tion reaction was applied to polystyrene and its copolymers only toward the middle of this century.

ISSN:1532-1797    

DOI:10.1080/07366578708078821

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

Poly (vinyl chloride) (PVC) is commercially one of the most important thermoplastics in the world today. Its growth rate averaged 7% per annum in the 1970s. In 1980 it was the second largest volume thermoplastic used in the United States (the first being low-density polyethylene (LDPE) and was the lowest priced among the five leading plastics: LDPE, PVC, high-density polyethylene (HDPE), polypropylene (PP), and polystyrene (PS).

ISSN:1532-1797    

DOI:10.1080/07366578708078822

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

Among the various types of copolymerization, graft copolym-erization has attracted considerable attention among applied polymer chemists. Graft copolymerization is a process of copolymerization of one kind of monomer in its polymeric state with another polymer which may be either synthetic or natural. So a graft copolymer is a high polymer whose molecule consists of two or more polymeric parts of different composition, chemically united together. Graft copolymerization onto textile fibers is a challenging field of research with unlimited future prospects [1-10]. This is attractive to chemists as a means of modifying macromolecules since, in general, degradation is minimized. The desirable properties of the polymer are retained, and copolymerization Drovides additional properties throuerh the added polymer.

ISSN:1532-1797    

DOI:10.1080/07366578708078823

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:1532-1797    

DOI:10.1080/07366578708078817

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor