EFFECT OF FUNGAL DEGRADATION ON MECHANICAL PROPERTIES OF CELLOPHANE.

S. A. Bradley*, S. H. Carr

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

In the reported experiments, changes in dynamic mechanical properties of cellophane films due either to fungal attack or to hydrochloric acid hydrolysis have been measured. It appears that damage caused by cellulase enzymes that are released from a fungal overgrowth is localized in noncrystalline regions. These effects include a substantial reduction in elastic modulus, a reduction in temperature at which relaxation processes involving chain segmental mobility occur, and a broadening of loss tangent peaks due to segmental mobility and to rotations of methylol groups. Comparing results obtained from cellulase hydrolysis with those obtained from acid hydrolysis, it is clear that enzyme attack proceeds by a characteristic and selective process. Implications regarding the embrittlement often seen to accompany biodegradation are discussed.

Original languageEnglish (US)
Pages (from-to)125-133
Number of pages9
JournalJ Polym Sci Part A-2 Polym Phys
Volume14
Issue number1
DOIs
StatePublished - Jan 1 1976

ASJC Scopus subject areas

  • Engineering(all)

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