Skip to main content

The influence of water on the elastic modulus of paper. Part I: Extension of the H-bond theory

Publication ,  Journal Article
Zauscher, S; Caulfield, DF; Nissan, AH
Published in: Tappi Journal
December 1, 1996

In Part I, the theory of hydrogen-bond-dominated solids is extended to explain phenomena concerning the elastic behavior of paper, based on the postulate that the number dencity of effective hydrogen bonds, normalized to on average bond stiffness, is higher for ultrasonic modulus measurements than for quasi-static measurements. This leads to the predictions: (I) The measured elastic modulus of a sheet of paper will depend upon whether the modulus is measured quasi-statically using load-elongation methods of ultrasonically using the time of flight method, and that the ultrasonic modulus, Es, will exceed the quasi-static modulus, Er, (Es > Er). (2) The rate of change of modulus with increasing moisture content, w, follows the rule: In[E] = A - (C.I.) w, where the negative slope of the curve In[E] vs. w is constant over a wide this of moisture contents. But again this slope will also differ whether measured quasi-statically or ultrasonically, with (C.I.)s > (C.I.)r. (3) Moreover, the extended theory predicts that the ratio of moduli at zero moisture content is related to the ratio of slopes by the expression: {[Es]r} / [Es]}3 =[(C.I.) + I] / [(C.I.) + I].

Duke Scholars

Published In

Tappi Journal

ISSN

0734-1415

Publication Date

December 1, 1996

Volume

79

Issue

12

Start / End Page

178 / 182

Related Subject Headings

  • Forestry
  • 4104 Environmental management
  • 3007 Forestry sciences
  • 0705 Forestry Sciences
  • 0502 Environmental Science and Management
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Zauscher, S., Caulfield, D. F., & Nissan, A. H. (1996). The influence of water on the elastic modulus of paper. Part I: Extension of the H-bond theory. Tappi Journal, 79(12), 178–182.
Zauscher, S., D. F. Caulfield, and A. H. Nissan. “The influence of water on the elastic modulus of paper. Part I: Extension of the H-bond theory.” Tappi Journal 79, no. 12 (December 1, 1996): 178–82.
Zauscher S, Caulfield DF, Nissan AH. The influence of water on the elastic modulus of paper. Part I: Extension of the H-bond theory. Tappi Journal. 1996 Dec 1;79(12):178–82.
Zauscher, S., et al. “The influence of water on the elastic modulus of paper. Part I: Extension of the H-bond theory.” Tappi Journal, vol. 79, no. 12, Dec. 1996, pp. 178–82.
Zauscher S, Caulfield DF, Nissan AH. The influence of water on the elastic modulus of paper. Part I: Extension of the H-bond theory. Tappi Journal. 1996 Dec 1;79(12):178–182.

Published In

Tappi Journal

ISSN

0734-1415

Publication Date

December 1, 1996

Volume

79

Issue

12

Start / End Page

178 / 182

Related Subject Headings

  • Forestry
  • 4104 Environmental management
  • 3007 Forestry sciences
  • 0705 Forestry Sciences
  • 0502 Environmental Science and Management