Synthesis of poly(t-butyl methacrylate) macromonomer

Ishizu, Koji; Mitsutani, Kenji; Fukutomi, Takashi

doi:10.1002/pol.1987.140250703

Cited by 28 publications

(28 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The molecular weight distributions of the macro-monomers were broad in comparison with those obtained by anionic polymerization. 16 From 'H-NMR spectrum, the terminal vinylbenzyl group of PBMA macromonomer was apparently confirmed, as shown in the previous study? The peak intensity ratio of the vinyl protons to the methyl protons gives a minimum functionality of PBMA macromonomer.…”

Section: Synthesis Of Macromonomerssupporting

confidence: 66%

Graft copolymers having hydrophobic backbone and hydrophilic branches. X. Preparation and properties of water‐dispersible polyanionic microspheres having poly(methacrylic acid) branches on their surfaces

Riza¹,

Tokura²,

Iwasaki³

et al. 1995

J. Polym. Sci. A Polym. Chem.

View full text Add to dashboard Cite

The free radical copolymerization of poly(t‐butyl methacrylate) (PBMA) macromonomer with styrene in ethanol give monodispersed microspheres with 0.8‐1.6 μm diameter. The resulting microspheres were treated with HCl solution to convert into anionic microspheres having poly(methacrylic acid) chains. ESCA analysis of the microsphere surface suggested that PBMA chains were favorably located on the surface of the microspheres. The particle size of the microspheres decreased with increasing molecular weight and concentration of the macromonomer. Water dispersibilities of the microspheres were evaluated by measuring the relative turbidity of the suspension of microspheres as a function of pH. The results show that they were strongly dependent on pH. © 1995 John Wiley & Sons, Inc.

show abstract

Section: Synthesis Of Macromonomerssupporting

confidence: 66%

Graft copolymers having hydrophobic backbone and hydrophilic branches. X. Preparation and properties of water‐dispersible polyanionic microspheres having poly(methacrylic acid) branches on their surfaces

Riza¹,

Tokura²,

Iwasaki³

et al. 1995

J. Polym. Sci. A Polym. Chem.

View full text Add to dashboard Cite

show abstract

“…The dynamic nature of micelles limits their structural stability, especially under adverse conditions (fluctuating or extreme concentrations, temperatures, or mechanical forces), when physical coagulation forces are not sufficient to maintain their structure 25–27. The stabilization of micelles can be achieved through the formation of chemical bonds between polymer chains 28–36. Several studies concerning the covalent stabilization of polymer micelles have employed the crosslinking of polymer chains within the core region 28–31.…”

Section: Resultsmentioning

confidence: 99%

“…The stabilization of micelles can be achieved through the formation of chemical bonds between polymer chains 28–36. Several studies concerning the covalent stabilization of polymer micelles have employed the crosslinking of polymer chains within the core region 28–31. Although the effect of core crosslinking on the flexibility is unknown, concern can be raised that the resulting increase in core rigidity might impair the ability to perform as shape‐adaptable host structures.…”

Section: Resultsmentioning

confidence: 99%

Nanodroplets of polyisoprene fluid contained within poly(acrylic acid‐co‐acrylamide) shells

Huang

Kowalewski

Wooley

2003

J. Polym. Sci. A Polym. Chem.

View full text Add to dashboard Cite

The preparation and characterization of macromolecular nanostructures possessing an amphiphilic core-shell morphology with a hydrophobic, fluidlike core domain with a low glass-transition temperature are described. The nanostructures were prepared by the self-assembly of polyisoprene-b-poly(acrylic acid) diblock copolymers into polymer micelles, followed by crosslinking of the hydrophilic shell layer via condensation between the acrylic acid functionalities and 2,2Ј-(ethylenedioxy)bis(ethylamine), in the presence of 1-(3Ј-dimethylaminopropyl)-3-ethylcarbodiimide methiodide. The properties of the resulting shell-crosslinked knedel-like (SCK) nanoparticles were dependent on the microstructure and properties of the polyisoprene core domain. SCKs containing polyisoprene with a mixture of 3,4-and 1,2-microstructures underwent little shape distortion upon adsorption from aqueous solutions onto mica or graphite. In contrast, when SCKs were composed of polyisoprene of predominantly cis-1,4-repeat units, the glass-transition temperature was Ϫ65°C, and the nanospheres deformed to a large extent upon adsorption onto a hydrophilic substrate (mica). Adsorption onto graphite gave a less pronounced deformation, as determined by a combination of transmission electron microscopy and atomic force microscopy. Subsequent crosslinking of the core domain (in addition to the initial shell crosslinking) dramatically reduced the fluid nature and, therefore, reduced the SCK shape change.

show abstract

“…A schematic representation of this general methodology is shown in Figure 15.5. One of the very early examples of this concept for the generation of nanospheres utilized a diblock copolymer-poly(styrene)-block-poly(4-vinyl pyridine), labeled PS-b-P4VP [35]. Using a diblock copolymer with a higher weight-fraction of PS (>75 wt%), solvent cast films were shown to contain spherical micellar aggregates with a P4VP core embedded in a PS matrix, as confirmed by TEM studies.…”

Section: Morphology Of Block Copolymersmentioning

confidence: 90%

Nanostructured Polymers

Ramakrishnan

2004

The Chemistry of Nanomaterials

View full text Add to dashboard Cite

Synthesis of poly(t-butyl methacrylate) macromonomer

Cited by 28 publications

References 0 publications

Graft copolymers having hydrophobic backbone and hydrophilic branches. X. Preparation and properties of water‐dispersible polyanionic microspheres having poly(methacrylic acid) branches on their surfaces

Graft copolymers having hydrophobic backbone and hydrophilic branches. X. Preparation and properties of water‐dispersible polyanionic microspheres having poly(methacrylic acid) branches on their surfaces

Nanodroplets of polyisoprene fluid contained within poly(acrylic acid‐co‐acrylamide) shells

Nanostructured Polymers

Contact Info

Product

Resources

About