You are here: Home
/ Publication Information
Title: Resolution of molecular weight distributions in slightly pyrolyzed cellulose using the weibull function
Author: Broido, A.; Yow, Hsiukang;
Source: Journal of Applied Polymer Science. 21(6): 1677-1685
Publication Series: Scientific Journal (JRNL)
Description: Even before weight loss in the low-temperature pyrolysis of cellulose becomes significant, the average degree of polymerization of the partially pyrolyzed samples drops sharply. The gel permeation chromatograms of nitrated derivatives of the samples can be described in terms of a small number of mixed size populations—each component fitted within reasonable limits by a Weibull distribution function. The modal value of each component is taken as an integral multiple of a "macromonomer" of nominal degree of polymerization 228.4. Thus, the data are consistent with a model in which the degradation process is assumed to involve bond rupture at specific "weak links" into particularly favored molecular sizes. Such a mechanism provides a plausible alternative to the commonly assumed random breakdown along the length of the molecule.
Keywords: pyrolysis, combustion
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
XML: View XML
Broido, A.; Yow, Hsiukang 1977. Resolution of molecular weight distributions in slightly pyrolyzed cellulose using the weibull function. Journal of Applied Polymer Science. 21(6): 1677-1685.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility