摘要:

The technology of composite materials has spread for the past two decades to concrete, one of the most common structural materials. A concrete-polymer composite combines the advantages of both materials to produce properties superior to either single component [1–20]. Traditional construction material, namely portland cement concrete, suffers from serious drawbacks of little or no resistance to chemical attack; rapid freeze–thaw deterioration; low tensile, shear, and bond strengths; and inherent microstructural problems such as air voids and shrinkage cracks [12, 17, 21].

ISSN:1532-1797    

DOI:10.1080/07366578208081057

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

摘要:

Controlled activity or controlled release polymeric systems are becoming increasingly important in a variety of pharmaceutical, medical, and agricultural applications. The macromolecular nature of these delivery systems allows for control of rate of delivery, mobility, and period of effectivness for the biologically active component.

ISSN:1532-1797    

DOI:10.1080/07366578208081058

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

摘要:

Many naturally occurring polyanionic materials are known, each of which possesses its own set of physiological properties. Recently, a variety of synthetic polyanions have become available, and their physiological properties have been compared with the naturally occurring polyanions. Probably the most widely investigated synthetic polyanion is the 1:2 regularly alternating cyclo-copolymer (DIVEMA) (Eq. 1) of divinyl ether (DVE) and maleic anhydride (MA), first discovered in these laboratories in 1951 [1], This material has been investigated extensively, both from the standpoint of its chemical structure [2] and its antitumor activity [3]. Although certain aspects of its structure remain to be determined [4], it has been shown to possess a wide spectrum of biological activity [5] and is an interferon inducer [3]. Many structural modifications of DIVEMA have been synthesized which also possess antitumor activity and interferon-inducing capability [6].

ISSN:1532-1797    

DOI:10.1080/07366578208081059

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

摘要:

The topics of cross-linking methods and network polymers encompass an enormous literature covering many facets of polymer science. This review selects several areas from the broad field of cross-linking which represent more recent technology, particularly that not covered in earlier reviews [1].

ISSN:1532-1797    

DOI:10.1080/07366578208081060

出版商:Taylor & Francis Group    

年代:1982

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:10.1080/07366578208081056

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor