| 年代：1973 |
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Volume 7 issue 1
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| 1. |
A review of crazing and fracture in thermoplastics |
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Journal of Polymer Science: Macromolecular Reviews,
Volume 7,
Issue 1,
1973,
Page 1-154
R. P. Kambour,
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ISSN:0076-2083
DOI:10.1002/pol.1973.230070101
出版商:Wiley Subscription Services, Inc., A Wiley Company
年代:1973
数据来源: WILEY
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| 2. |
Polymerization systems engineering—a literature review |
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Journal of Polymer Science: Macromolecular Reviews,
Volume 7,
Issue 1,
1973,
Page 155-187
L. T. Fan,
J. S. Shastry,
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摘要:
AbstractThis paper reviews research in the area of polymerization systems engineering. Polymerization systems engineering is divided into six subareas: thermodynamics, modeling and simulation, optimal reactor design, dynamic optimization, stability analysis, and optimal synthesis. Basic concepts of polymerization are presented, and research in these subareas is reviewed. It is concluded that much remains to be done.
ISSN:0076-2083
DOI:10.1002/pol.1973.230070102
出版商:Wiley Subscription Services, Inc., A Wiley Company
年代:1973
数据来源: WILEY
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| 3. |
Cellulose derivatives containing carboxylic acid groups |
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Journal of Polymer Science: Macromolecular Reviews,
Volume 7,
Issue 1,
1973,
Page 189-262
Thomas C. Allen,
John A. Cuculo,
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PDF (3417KB)
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ISSN:0076-2083
DOI:10.1002/pol.1973.230070103
出版商:Wiley Subscription Services, Inc., A Wiley Company
年代:1973
数据来源: WILEY
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| 4. |
Drag reduction in turbulent flow by polymer additives |
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Journal of Polymer Science: Macromolecular Reviews,
Volume 7,
Issue 1,
1973,
Page 263-290
J. L. Lumley,
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PDF (1210KB)
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摘要:
AbstractA brief survey is given of the drag reduction phenomenon, emphasizing the aspects which must be explained by any theory: onset, the existence of intrinsic drag reduction, the Newtonian plug, saturation with increasing concentration, and the maximum drag reduction asymptote. In addition, the polymer properties observed to be favorable are noted. Experimental and theoretical arguments are cited, indicating that sublayer stability arguments are not relevant. Recent evidence is given, linking the onset phenom‐enon to a molecular time scale. The behavior of isolated molecules in flow fields is briefly surveyed, indicating the possibility of large increases in viscosity in relatively rotation free strain rate fields; indirect experimental evidence for such behavior is cited, and it is shown how, by reducing the intensity of the smallest eddies, this can explain the various aspects noted. The maximum drag reduction asymptote is discussed, in connection with recent measurements of turbulent fluctuations in drag reducing flows, and it is shown how both of these may be related to changes in the large eddy structure caused by the polymer induced changes in the small eddie
ISSN:0076-2083
DOI:10.1002/pol.1973.230070104
出版商:Wiley Subscription Services, Inc., A Wiley Company
年代:1973
数据来源: WILEY
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