摘要:

AbstractRecent progress in basic science and technological innovation is described for three areas of research in the IRC at Leeds University; melt spun high modulus polyethylene fibres, hydrostatic extrusion and die drawing.

ISSN:1022-1360    

DOI:10.1002/masy.19951000103

出版商:Hüthig&Wepf Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractA brief survey of biomaterials and of the approaches to modify their surface is given. By means of specific examples of polymers and polymer blends the chemical modification of the surface by means of wet‐chemical processes as well by plasma treatment and the consequences for endothelial cell proliferation, fibronectin adsorption, hydrophilicity, surface tension and zeta‐potential are described. The results are correlated with standard parameters of measuring hemocompatibility and a compatibility window is indica

ISSN:1022-1360    

DOI:10.1002/masy.19951000104

出版商:Hüthig&Wepf Verlag    

年代:1995

数据来源: WILEY

ISSN:1022-1360    

DOI:10.1002/masy.19951000105

出版商:Hüthig&Wepf Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractIt is shown that by low frequency measurements in hydrophilic polymers only one state of water is observed. Water behave as a classical plasticizer and ice melting in polymer is similar to ice melting in binary simple mixture. The non crystallizable water in these systems is explained by the Tg regulation effect. In oriented swollen polymers, only one state of water is observed in the time scale ∼ 1/ωq= 10−5s by deuterium NMR. This technique gives information on the mean orientation of D2O molecules in the oriented polymer and on the fraction of mobile water molecules. The concept of bound and unbound water is not relevant for explaining the DSC and D‐NMR r

ISSN:1022-1360    

DOI:10.1002/masy.19951000106

出版商:Hüthig&Wepf Verlag    

年代:1995

数据来源: WILEY

ISSN:1022-1360    

DOI:10.1002/masy.19951000107

出版商:Hüthig&Wepf Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractA novel hydrogel has been used for intracorneal implantation, in order to correct refractive errors of the eye. Our hydrogel is a polyanionic copolymer of acrylonitrile and sodium methallylsulfonate material (AN 69, made by HOSPAL, France). We describe here its formation, chemico‐physical and biological properties (in vitro and in vivo), and its biomechanical behaviour when implanted into the corne

ISSN:1022-1360    

DOI:10.1002/masy.19951000108

出版商:Hüthig&Wepf Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractLaser inscription of thermoplastic materials is a rapidly growing field. Therefore, materials must be developed, which were laser‐markable. For doing this in an efficient way, analytical techniques must be used to understand the mechanism of different processes during laser inscriptio

ISSN:1022-1360    

DOI:10.1002/masy.19951000109

出版商:Hüthig&Wepf Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractAn attractive application field for optical polymers is seen in telecom systems, both for interconnection and switching. Based on selected system applications specific requirements for materials selection and processing of polymer based optical devices are given.

ISSN:1022-1360    

DOI:10.1002/masy.19951000110

出版商:Hüthig&Wepf Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractIn organic systems, radiation‐ and photo‐induced electron transfer reactions result in the first step in the formation of radical cations. With pulse radiolysis and laser photolysis experiments radical cations of phenols could be indirectly characterized whereas radical cations of sterically hindered amines (HALS compounds) could be directly obser

ISSN:1022-1360    

DOI:10.1002/masy.19951000111

出版商:Hüthig&Wepf Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractTransport properties of additives in polymers were studied by measuring the diffusion rate and solubility of different antioxidants in ethylene polymers. Correlation was found between the diffusion rate and the fractional free‐volume of the noncrystalline phase of polymer, as well as the specific volume of diffusant. The measured solubility values were evaluated by the extended thermodynamic theory of solution of solid

ISSN:1022-1360    

DOI:10.1002/masy.19951000112

出版商:Hüthig&Wepf Verlag    

年代:1995

数据来源: WILEY