Hydrogen bonding in cellulose ester blends

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:538947

Kelley, S S; Davis, M F; Myers, M D ^[1]

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1. National Renewable Energy Lab., Golden, CO (United States)

The miscibility of polymer blends is heavily influenced by the presence of specific interactions, such as hydrogen bonding, between the polymeric components in the blend. Specific interactions between a hydrogen bonding donor, e.g., phenolic hydroxyl, and a hydrogen bonding acceptor, e.g., carbonyl or ether group can be used to create homogeneous polymer blends. The strength of the specific interactions must be sufficiently strong to overcome the unfavorable interactions created by differences in the solubility parameters of the two components. In this study a series of cellulose ester/phenolic polymer blends were evaluated. Three types of cellulose esters and two types of phenolic polymers were used in this study. The chemical structure of both the cellulose ester and the phenolic polymer were varied to determine the effects of changes in the chemical composition on the mixing behavior of the polymers. Miscibility was determined by thermal analysis. Surprisingly, the miscibility of cellulose ester/phenolic polymer blends was not sensitive to changes in the chemical composition of either blend component. Spectroscopic techniques (FTIR and solid state NMR) were used to study the extent of hydrogen bonding between the cellulose ester carbonyls and phenolic hydroxyls. Hydrogen bonding interactions were found to be the driving force responsible for the formation of miscible cellulose ester/phenol polymer blends.

• OSTI ID: 538947
• Report Number(s): CONF-960807--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
CARBONYLS
CELLULOSE ESTERS
CHEMICAL BONDS
CHEMICAL COMPOSITION
HYDROGEN
MIXING
POLYMERS
SOLUBILITY
THERMAL ANALYSIS