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Adsorption of photoactive amphiphilic polymers onto hydrophobic polymer films. Polystyrene-block-poly(2-vinylnaphthalene)-block-poly(methacrylic acid)

Journal Article · · Langmuir; (United States)
DOI:https://doi.org/10.1021/la00018a037· OSTI ID:6980684
; ; ;  [1]
  1. Univ. of Texas, Austin, TX (United States)
+ Show Author Affiliations
Diblock polystyrene-block-poly(methacrylic acid) polymers have been synthesized using anionic polymerization techniques incorporating an average of one naphthalene per polymer at either the beginning of the polystyrene block or at the junction between the polystyrene and poly(methacrylic acid) blocks. These polymers have been shown in earlier work to form stable micelles in solvent mixtures from 80:20 dioxane/H[sub 2]O to pure water. In the present paper we have examined the ability of these polymers to adsorb on polystyrene films and have used photophysical techniques to deduce the exposure of the naphthalene group to the aqueous phase. Scanning electron microscopy images demonstrate that the intact micelle adsorbs onto the polystyrene surface and can achieve a nearly close-packed monolayer coverage. The micelles adhere tenaciously to the polystyrene film and lower the contact angle of water from ca. 90[degree] for untreated polystyrene to 30-40[degree] after surface adsorption. The naphthalene groups at the polystyrene-poly(methacrylic acid) junction are partially exposed to the aqueous phase while the naphthalene at the poly(styrene) end is totally protected. 21 refs., 6 figs., 5 tabs.
DOE Contract Number:
FG03-93ER14337
OSTI ID:
6980684
Journal Information:
Langmuir; (United States), Journal Name: Langmuir; (United States) Vol. 10:6; ISSN LANGD5; ISSN 0743-7463
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
ADSORPTION
CHEMICAL REACTIONS
COMPILED DATA
COPOLYMERS
DATA
DIOXANE
ELECTRON MICROSCOPY
FILMS
FLUORESCENCE
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
INFORMATION
LUMINESCENCE
MATERIALS
MICELLAR SYSTEMS
MICROSCOPY
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERIZATION
POLYMERS
POLYOLEFINS
POLYSTYRENE
POLYVINYLS
QUENCHING
SCANNING ELECTRON MICROSCOPY
SORPTION
SYNTHESIS
SYNTHETIC MATERIALS
WATER