Optical anisotropy and conformational analysis of styrene-methyl methacrylate block copolymers in dilute solutions

1991 ◽  
Vol 24 (21) ◽  
pp. 5796-5800 ◽  
Author(s):  
E. Saiz ◽  
G. Floudas ◽  
G. Fytas
Keyword(s):  
Block Copolymers ◽  
Conformational Analysis ◽  
Methyl Methacrylate ◽  
Optical Anisotropy ◽  
Dilute Solutions

Mean-square optical anisotropy of oligo- and poly(methyl methacrylate)s in dilute solutions

1993 ◽  
Vol 26 (15) ◽  
pp. 3742-3749 ◽  
Author(s):  
Yoshio Takaeda ◽  
Takenao Yoshizaki ◽  
Hiromi Yamakawa
Keyword(s):  
Methyl Methacrylate ◽  
Optical Anisotropy ◽  
Mean Square ◽  
Dilute Solutions ◽  
Poly Methyl Methacrylate

scholarly journals Viscoelastic Properties of Melts and Concentrated Solutions of Styrene-Methyl Methacrylate Block Copolymers

1978 ◽  
Vol 6 (1) ◽  
pp. 20-23 ◽  
Author(s):  
Mitsunobu KITAMURA ◽  
Satoshi YAMAMOTO ◽  
Toshiro MASUDA ◽  
Shigeharu ONOGI
Keyword(s):  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Viscoelastic Properties ◽  
Concentrated Solutions

scholarly journals Synthesis of Poly(methyl methacrylate)-b-poly(N-isopropylacrylamide) Block Copolymer by Redox Polymerization and Atom Transfer Radical Polymerization

2018 ◽  
Vol 18 (3) ◽  
pp. 537 ◽  
Author(s):  
Melahat Göktaş ◽  
Guodong Deng
Keyword(s):  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Gel Permeation Chromatography ◽  
High Yield ◽  
Resonance Spectroscopy ◽  
Atom Transfer ◽  
Poly Methyl Methacrylate ◽  
Redox Polymerization

Poly(methyl methacrylate)-b-poly(N-isopropylacrylamide) [PMMA-b-PNIPAM] block copolymers were obtained by a combination of redox polymerization and atom transfer radical polymerization (ATRP) methods in two steps. For this purpose, PMMA macroinitator (ATRP-macroinitiator) was synthesized by redox polymerization of methyl methacrylate and 3-bromo-1-propanol using Ce(NH4)2(NO3)6 as a catalyst. The synthesis of PMMA-b-PNIPAM block copolymers was carried out by means of ATRP of ATRP-macroinitiator and NIPAM at 60 °C. The block copolymers were obtained in high yield and high molecular weight. The characterization of products was accomplished by using multi instruments and methods such as nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, gel permeation chromatography, and thermogravimetric analysis.

Dilute Solutions of Block Copolymers. 1. Diblock Copolymers

1998 ◽  
Vol 31 (13) ◽  
pp. 4342-4349 ◽  
Author(s):  
O. F. Olaj ◽  
B. Neubauer ◽  
G. Zifferer
Keyword(s):  
Block Copolymers ◽  
Diblock Copolymers ◽  
Dilute Solutions

Aromatic thioketone-mediated radical polymerization of methacrylates and the preparation of amphiphilic quasi-block copolymers

2020 ◽  
Vol 11 (18) ◽  
pp. 3251-3259
Author(s):  
Haoyu Yu ◽  
Jianwei Shao ◽  
Dong Chen ◽  
Li Wang ◽  
Wantai Yang
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Radical Polymerization ◽  
Control Radical Polymerization ◽  
Strong Ability

TfXT exhibits strong ability to control radical polymerization of methyl methacrylate and has been used in preparing amphiphilic quasi-block copolymer.

scholarly journals Two-dimensional chromatography of complex polymers. 3. Full analysis of polystyrene-poly(methyl methacrylate) diblock copolymers

e-Polymers ◽  
2002 ◽  
Vol 2 (1) ◽  
Author(s):  
Harald Pasch ◽  
Kibret Mequanint ◽  
Adrian Jörg
Keyword(s):  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Diblock Copolymers ◽  
Size Exclusion ◽  
Molecular Heterogeneity ◽  
Two Dimensional ◽  
Poly Methyl Methacrylate ◽  
Mass Distributions ◽  
Exclusion Chromatography ◽  
Complex Polymers

AbstractPoly(styrene-block-methyl methacrylate)s were fully analyzed by liquid chromatography at the critical point of adsorption (LC-CC) and two-dimensional chromatography. Operating at chromatographic conditions corresponding to the critical points of the homopolymers polystyrene and poly(methyl methacrylate), the block lengths distributions for the different blocks of the block copolymers were determined quantitatively. Information on the amounts and molar mass distributions of homopolymers and coupling products that were identified in the samples as by-products was obtained by on-line coupled 2D chromatography. It was shown that a complete picture of the molecular heterogeneity of block copolymers can be obtained only when information from different chromatographic experiments is combined. Size exclusion chromatography alone is inappropriate for evaluating the molecular heterogeneity of such samples.

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