Poly(methyl methacrylate-co-ethyl acrylate) latex particles with poly(ethylene glycol) grafts: Structure and film formation
(2007) In Langmuir 23(7). p.3590-3602- Abstract
- Water-based copolymer dispersions were prepared using methyl methacrylate (MMA), ethyl acrylate (EA) (MMA/EA = 1:2), and a series of nonionic polymerizable surfactants, i.e., "surfmers" based on poly(ethylene glycol)-(meth)acrylates. The latexes were compared with the behavior of a conventionally stabilized (nonionic nonylphenol ethoxylate, NP100 with 84 ethylene oxide units) dispersion with the same MMA-EA composition (PMMAEA). A number of techniques were employed in order to characterize structure, dynamics, and film formation properties: solution/solid-state NMR, dynamic/static light scattering (DLS/SLS), differential scanning calorimetry (DSC), tensile/shear mode dynamic mechanical thermal analysis (DMTA), and atomic force microscopy... (More)
- Water-based copolymer dispersions were prepared using methyl methacrylate (MMA), ethyl acrylate (EA) (MMA/EA = 1:2), and a series of nonionic polymerizable surfactants, i.e., "surfmers" based on poly(ethylene glycol)-(meth)acrylates. The latexes were compared with the behavior of a conventionally stabilized (nonionic nonylphenol ethoxylate, NP100 with 84 ethylene oxide units) dispersion with the same MMA-EA composition (PMMAEA). A number of techniques were employed in order to characterize structure, dynamics, and film formation properties: solution/solid-state NMR, dynamic/static light scattering (DLS/SLS), differential scanning calorimetry (DSC), tensile/shear mode dynamic mechanical thermal analysis (DMTA), and atomic force microscopy (AFM). The surfmers were found to be miscible with the MMA-EA copolymer at room temperature, with 46-85 mol % of the reacted surfmer detected at the particle surfaces, and the remaining part buried in the particle bulk. In contrast, the NP100 surfactant formed a separate interphase between the copolymer particles with no mixing detected at room temperature or at 90 degrees C. For a 4.0% dry weight concentration, NP100 phase separated and further crystallized at room temperature over a period of several months. Composition fluctuations related to a limited blockiness on a length scale above similar to 2 nm were detected for PMMAEA particles, whereas the surfmer particles were found to be homogeneous also below this limit. On a particle-particle level, the dispersions tended to form colloidal crystals unless hindered by a broadened particle size distribution or, in the case of PMMAEA, by the action of NP100. Finally, a surface roughness (R-q) master plot was constructed for data above the glass transition temperature (T-g) from T-g + 11 degrees C to T-g + 57 degrees C and compared with the complex shear modulus over 11 frequency decades. Shift factors from the 2 methods obeyed the same Williams-Landel-Ferry (WLF) temperature dependence, thus connecting the long-time surface flattening process to the rheological behavior of the copolymer. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/541194
- author
- Schantz, Staffan ; Carlsson, Hans T. ; Andersson, Thomas ; Erkselius, Stefan LU ; Larsson, Anders and Karlsson, Ola LU
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- REACTIVE SURFACTANTS, C-13 NMR-SPECTROSCOPY, SEQUENCE DISTRIBUTION, HETEROPHASE POLYMERIZATION, ENERGY-TRANSFER, FORMATION BEHAVIOR, COPOLYMER LATEXES, CHAIN-LENGTH 3, PRESSURE-SENSITIVE ADHESIVES, ATOMIC-FORCE MICROSCOPY
- in
- Langmuir
- volume
- 23
- issue
- 7
- pages
- 3590 - 3602
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000245012900016
- scopus:34147198325
- ISSN
- 0743-7463
- DOI
- 10.1021/la062802z
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041), Physical Chemistry 1 (S) (011001006)
- id
- 46eaac74-824e-4d5c-8176-3a3e12f93501 (old id 541194)
- alternative location
- http://pubs3.acs.org/acs/journals/doilookup?in_doi=10.1021/la062802z
- date added to LUP
- 2016-04-01 12:34:44
- date last changed
- 2022-01-27 07:00:45
@article{46eaac74-824e-4d5c-8176-3a3e12f93501, abstract = {{Water-based copolymer dispersions were prepared using methyl methacrylate (MMA), ethyl acrylate (EA) (MMA/EA = 1:2), and a series of nonionic polymerizable surfactants, i.e., "surfmers" based on poly(ethylene glycol)-(meth)acrylates. The latexes were compared with the behavior of a conventionally stabilized (nonionic nonylphenol ethoxylate, NP100 with 84 ethylene oxide units) dispersion with the same MMA-EA composition (PMMAEA). A number of techniques were employed in order to characterize structure, dynamics, and film formation properties: solution/solid-state NMR, dynamic/static light scattering (DLS/SLS), differential scanning calorimetry (DSC), tensile/shear mode dynamic mechanical thermal analysis (DMTA), and atomic force microscopy (AFM). The surfmers were found to be miscible with the MMA-EA copolymer at room temperature, with 46-85 mol % of the reacted surfmer detected at the particle surfaces, and the remaining part buried in the particle bulk. In contrast, the NP100 surfactant formed a separate interphase between the copolymer particles with no mixing detected at room temperature or at 90 degrees C. For a 4.0% dry weight concentration, NP100 phase separated and further crystallized at room temperature over a period of several months. Composition fluctuations related to a limited blockiness on a length scale above similar to 2 nm were detected for PMMAEA particles, whereas the surfmer particles were found to be homogeneous also below this limit. On a particle-particle level, the dispersions tended to form colloidal crystals unless hindered by a broadened particle size distribution or, in the case of PMMAEA, by the action of NP100. Finally, a surface roughness (R-q) master plot was constructed for data above the glass transition temperature (T-g) from T-g + 11 degrees C to T-g + 57 degrees C and compared with the complex shear modulus over 11 frequency decades. Shift factors from the 2 methods obeyed the same Williams-Landel-Ferry (WLF) temperature dependence, thus connecting the long-time surface flattening process to the rheological behavior of the copolymer.}}, author = {{Schantz, Staffan and Carlsson, Hans T. and Andersson, Thomas and Erkselius, Stefan and Larsson, Anders and Karlsson, Ola}}, issn = {{0743-7463}}, keywords = {{REACTIVE SURFACTANTS; C-13 NMR-SPECTROSCOPY; SEQUENCE DISTRIBUTION; HETEROPHASE POLYMERIZATION; ENERGY-TRANSFER; FORMATION BEHAVIOR; COPOLYMER LATEXES; CHAIN-LENGTH 3; PRESSURE-SENSITIVE ADHESIVES; ATOMIC-FORCE MICROSCOPY}}, language = {{eng}}, number = {{7}}, pages = {{3590--3602}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Langmuir}}, title = {{Poly(methyl methacrylate-co-ethyl acrylate) latex particles with poly(ethylene glycol) grafts: Structure and film formation}}, url = {{http://dx.doi.org/10.1021/la062802z}}, doi = {{10.1021/la062802z}}, volume = {{23}}, year = {{2007}}, }