Structural characteristics of silica sonogels prepared with additions of isopropyl alcohol
Article Abstract:
A study obtained wet silica gels with ~1.4 x [10.sup.-3] mol SiO2/[cm.sup.3] and ~92 vol % liquid phase from sonohydrolysis of tetraethoxysilane (TEOS) with different additions of isopropyl alcohol (IPA). It was found that the fundamental role of isopropyl alcohol on the structure of the resulting aerogels is to decrease the porosity and the pore mean size as R changes from pure TEOS to R = 4.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Interaction of ethylene oxide-propylene oxide copolymers with ionic surfactants studied by calorimetry: random versus block copolymers
Article Abstract:
Calorimetric methods are used for studying the interaction of random and block ethylene oxide (EO)-propylene oxide (PO) copolymers with ionic surfactants. The isothermal titration calorimetry (ITC) has shown that the interaction of surfactant with block copolymers is more intense than that with a random copolymer of similar composition.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2008
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Isothermal calorimetric investigation of the interaction of poly(N-isopropylacrylamide) and ionic surfactants
Article Abstract:
The reciprocal action of poly(N-isopropylacrylamide) (PNIPAM) with anionic and cationic surfactants is studied using isothermal titration calorimetry. The results conclude that the interaction of PNIPAM with ionic surfactants is considerably influenced by temperature.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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