Thermal behavior of random copolymers of methacrylic acid and tert-butyl methacrylate

1984 ◽  
Vol 17 (5) ◽  
pp. 1010-1012 ◽  
Author(s):  
Juey H. Lai
Keyword(s):  
Thermal Behavior ◽  
Methacrylic Acid ◽  
Butyl Methacrylate ◽  
Random Copolymers ◽  
Tert Butyl

Styrene-tert-butyl methacrylate and styrene-methacrylic acid block copolymers: synthesis and characterization

1992 ◽  
Vol 25 (9) ◽  
pp. 2541-2545 ◽  
Author(s):  
C. Ramireddy ◽  
Zdenek Tuzar ◽  
Karel Prochazka ◽  
S. E. Webber ◽  
Petr Munk
Keyword(s):  
Block Copolymers ◽  
Methacrylic Acid ◽  
Butyl Methacrylate ◽  
Synthesis And Characterization ◽  
Tert Butyl

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

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.

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