Synthesis, structure and film-forming properties of poly(butyl methacrylate)-poly(methacrylic acid) core-shell latex

Polymer ◽  
1994 ◽  
Vol 35 (8) ◽  
pp. 1779-1786 ◽  
Author(s):  
Haeng-Boo Kim ◽  
Yongcai Wang ◽  
Mitchell A. Winnik
Keyword(s):  
Methacrylic Acid ◽  
Butyl Methacrylate ◽  
Core Shell ◽  
Film Forming

Preparation and Property Study of Core-Shell Ambient-Temperature Crosslinkable Polyacrylate Binder

2013 ◽  
Vol 469 ◽  
pp. 3-6 ◽  
Author(s):  
Mu Li ◽  
Xiao Song Lin ◽  
Xiao Yu Li ◽  
Hai Qiao Wang
Keyword(s):  
Ambient Temperature ◽  
Butyl Acrylate ◽  
Core Shell ◽  
Drying Time ◽  
Acrylic Polymer ◽  
Force Microscopy ◽  
Atomic Force ◽  
Transmission Electron ◽  
Film Forming ◽  
Water Based

As the binder of waterborne inks, the capability of acrylic polymer has great influences on the quality of inks. In this contribution, structured latex particles with a poly (stryrene-butyl acrylate-methacrylate) core and a poly (butyl acrylate-methyl methacrylate-methacrylic acid-diacetone acrylamide (DAAM)) shell, which can be used as binders of water-based ink, were prepared by emulsion polymerization. The emulsion can cure in the course of film forming at ambient temperature through the reaction between DAAM and the adipic acid dihydrazide (ADH). Fourier transform infrared spectroscopy (FTIR), differential scanning calorimeter (DSC), transmission electron microscopy (TEM), atomic force microscopy (AFM) were used to characterize the structures and study the properties of the latices. The drying time of the crosslinking latices was investigated. In addition, influences of DAAM monomer dosage and the mole ratio of DAAM to ADH on the mechanical properties of self-crosslinkable core-shell latices were also discussed. It was found that the core-shell crosslinkable particles with a low glass transition temperature (Tg) core and a high Tg shell have better film properties and would be more applicable to binders of water-based ink for plastic film, in comparison with those particles with a high Tg core and a low Tg shell.

scholarly journals A Nonaqucous Potentiometric Titration Study of the Dissociation of t-Butyl Methacrylate-Methacrylic Acid Copolymers

2003 ◽  
Vol 19 (5) ◽  
pp. 775-777
Author(s):  
Kiyoharu NAKATANI ◽  
Jun YAMASHITA ◽  
Tomomi SEKINE ◽  
Minoru TORIUMI ◽  
Toshiro ITANI
Keyword(s):  
Potentiometric Titration ◽  
Methacrylic Acid ◽  
Butyl Methacrylate ◽  
Methacrylic Acid Copolymers ◽  
Titration Study

Preparation of Core-Shell Particles Consisted of Polysiloxane and Styrene-Butyl Methacrylate by High Internal Phase Emulsion

2014 ◽  
Vol 1033-1034 ◽  
pp. 996-1001
Author(s):  
Shao Jin Jia ◽  
Zhen Qi Zhang ◽  
Zhen Gang Ding ◽  
Xiao Tian Hou ◽  
Ping Kai Jiang
Keyword(s):  
Weight Ratio ◽  
Continuous Phase ◽  
Butyl Methacrylate ◽  
Core Shell ◽  
Water Contact ◽  
High Internal Phase Emulsion ◽  
Transmission Electron ◽  
Internal Phase ◽  
Shell Particles ◽  
Shell Composite

A core-shell composite polymer was produced by the method of high internal phase emulsion polymerization. The continuous phase of emulsion contained styrene(St), butyl methacrylate(BMA), octamethylcylotetrasiloxane(D4), and azobisisobutyronitrile (AIBN) which worked as an initiator. The block copolymers with St, BMA, D4 units are particularly promising for surface modification and hydrophobicity. The core-shell structure is proved by the use of Transmission electron microscopy (TEM). In addition, the water contact angle increased with the increasing weight ratio of D4. The results show that the concentrated emulsion system has good stability and the water resistance of the polymer has been improved greatly.

scholarly journals Human Erythrocyte-Like Transformation of Synthetic Polymer Vesicles

2021 ◽  
Author(s):  
Eri Yoshida
Keyword(s):  
Methacrylic Acid ◽  
Human Erythrocyte ◽  
Bilayer Membrane ◽  
Synthetic Polymer ◽  
Butyl Methacrylate ◽  
Temperature Changes ◽  
Polymer Vesicles ◽  
Membrane Perforation ◽  
Response To Temperature ◽  
Spherical Vesicles

Abstract This paper describes that synthetic polymer vesicles undergo a human erythrocyte-like transformation in response to temperature changes. The normally biconcave discoid erythrocytes, i.e., the discocytes, are transformed into various shapes by their environmental stresses. Field emission scanning electron microscopy (FE-SEM) demonstrates that the spherical vesicles consisting of poly(methacrylic acid)-block-poly(n-butyl methacrylate-random-methacrylic acid), PMAA-b-P(BMA-r-MAA), transform into echinocyte-like crenate vesicles due to expansion by the component copolymers in being freed from the vesicle surface when heated in an aqueous methanol solution. An increase in the vesicle concentration transforms the spherical vesicles into stomatocyte-like cup-shaped vesicles via the membrane perforation or double invaginations followed by membrane coupling and fusion. Light scattering studies reveal the reversibility and repeatability of the transformations. These findings indicate that the erythrocyte transformations are attributed to the inherent property of the bilayer membrane. The polymer vesicles are helpful for a better understanding of the biomembrane.

Effect of methacrylic acid and pendant vinyl groups on the mechanical properties of highly stretchable core–shell nanostructured films deposited from water

2021 ◽  
Author(s):  
James Turton ◽  
Stephen Worrall ◽  
Muhamad S. Musa ◽  
Amir H. Milani ◽  
Yichao Yao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Methacrylic Acid ◽  
Core Shell ◽  
Nanostructured Films ◽  
Highly Stretchable

The mechanical properties of these highly stretchable, water deposited elastomers can be tuned by varying MAA content and vinyl functionalisation.

The Preparation of Core/Shell Particles with Siloxane in the Shell

2005 ◽  
Vol 13 (7) ◽  
pp. 721-726
Author(s):  
Shunsheng Cao ◽  
Xiaobo Deng ◽  
Bailing Liu
Keyword(s):  
Dispersion Medium ◽  
Average Diameter ◽  
Butyl Methacrylate ◽  
Core Shell ◽  
The Core ◽  
Transmission Electron ◽  
Seeding Method ◽  
Emulsion Polymerisation ◽  
Shell Particles ◽  
Methacryloxypropyl Trimethoxysilane

Core-shell microspheres ranging in average diameter from 12.829 to 15.039 μm, with a poly butyl methacrylate (BMA) core, and a poly 3-(methacryloxypropyl)-trimethoxysilane (MATS) shell, were prepared with methanol as the dispersion medium, by a successive seeding method under kinetically controlled conditions. To date, although some of particles (PSi/PA) have been prepared by seeded emulsion polymerisation, only a few core/shell (PA/PSi) microspheres have been reported the literatures. To prepare core/shell (PA/PSi), the core was first synthesized by dispersion polymerisation and to form seeds; addition of MATS monomer was started after 90~95% conversion of the BMA. The reaction was prolonged for another 12 h to achieve complete consumption of MATS monomer. Microspheres; containing hydrophilic PBMA as the core and hydrophobic PMATS as the shell, were successfully formed through the free radical of surface in the core. The particles morphology and size distribution were examined using a Transmission electron microscope and a Malvern Master Sizer/E particle size analyser, respectively.

Layer-by-layer polyelectrolyte complex coated poly(methacrylic acid) nanogels as a drug delivery system for controlled release: structural effects

RSC Advances ◽  
2014 ◽  
Vol 4 (99) ◽  
pp. 56323-56331 ◽  
Author(s):  
Xiaorui Li ◽  
Pengcheng Du ◽  
Peng Liu
Keyword(s):  
Drug Delivery ◽  
Controlled Release ◽  
Drug Delivery System ◽  
Delivery System ◽  
Methacrylic Acid ◽  
Polyelectrolyte Complex ◽  
Core Shell ◽  
Layer By Layer ◽  
Structural Effects

The structure of core–shell nanogels@polyelectrolyte complex microspheres was optimized as a drug delivery system for controlled release.

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