Odd−Even Effect in Free Radical Polymerization of Optically Active 2,5-Bis[(4‘-alkoxycarbonyl)- phenyl]styrene

2008 ◽  
Vol 41 (5) ◽  
pp. 1594-1597 ◽  
Author(s):  
Junge Zhi ◽  
Zhiguo Zhu ◽  
Anhua Liu ◽  
Jiaxi Cui ◽  
Xinhua Wan ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Optically Active

Polymerization and Chiroptical Behavior of Polymethacrylamides Bearing a Bulky Oxazoline Pendant

2014 ◽  
Vol 887-888 ◽  
pp. 688-692
Author(s):  
Zheng Fu ◽  
Hong Wei ◽  
Chao Yuan ◽  
Zhong Wen Li
Keyword(s):  
Rare Earth ◽  
Free Radical ◽  
Radical Polymerization ◽  
Lewis Acid ◽  
Rare Earth Metal ◽  
Lewis Acids ◽  
Earth Metal ◽  
Free Radical Polymerization ◽  
Optically Active ◽  
Circular Dichroïsm

The radical polymerization of optically active methacrylamide derivatives, N-[o-(4-phenyl-4,5-dihydro-1,3-oxazol-2-yl) phenymethacrylamide ((R)-PhOPMAM) and N-[o-(4-isopropyl-4,5-dihydro-1,3-oxazol-2-yl) phenymethacrylamide ((S)-PriOPMAM), were carried out under various conditions. The effect of the Lewis acid, that is, rare earth metal trifluoromethanesulfonates on the free-radical polymerization were examined under different solvents. The Lewis acids are effective in enhancing the isotacticity in the polymerization of (S)-PriOPMAM. The same phenomenon were not happened in the polymerization of (R)-PhOPMAM. The polymerization characteristics and the chiroptical behavior of the resultant polymers have been examined by using circular dichroism (CD), UVVis, and NMR spectroscopies.

Polymerization and Chiroptical Behavior of N-[o-(4-isopropyl-4,5-dihydro-1,3-oxazol-2-yl) phenyl] Methacrylamide

2013 ◽  
Vol 477-478 ◽  
pp. 1187-1191 ◽  
Author(s):  
Zheng Fu ◽  
Hong Wei ◽  
Yang Ding ◽  
Chao Yuan
Keyword(s):  
Rare Earth ◽  
Circular Dichroism ◽  
Free Radical ◽  
Radical Polymerization ◽  
Lewis Acid ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Free Radical Polymerization ◽  
Optically Active ◽  
Circular Dichroïsm

The radical polymerization of optically active methacrylamide derivative, N-[o-(4-isopropyl-4,5-dihydro -1,3-oxazol-2-yl)phenyl] methacrylamide ((S)-MeOPMAM), was carried out under various conditions. The effect of Lewis acid, that is, rare earth metal trifluoromethanesulfonates on the free-radical polymerization were examined under different solvents. The polymerization in the presence of rare earth metal trifluoromethanesulfonates produced isotactic-rich polymers compared with those obtained without the Lewis acid. The polymerization characteristics and the chiroptical behavior of the resultant polymers have been examined by using circular dichroism (CD), UV–Vis, and NMR spectroscopies.

Synthesis and characterization of optically active helical vinyl polymers via free radical polymerization

2009 ◽  
Vol 47 (9) ◽  
pp. 2408-2421 ◽  
Author(s):  
Junge Zhi ◽  
Yan Guan ◽  
Jiaxi Cui ◽  
Anhua Liu ◽  
Zhiguo Zhu ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Optically Active ◽  
Synthesis And Characterization ◽  
Vinyl Polymers

Non-isothermal Kinetics of Free Radical Polymerization of 2-Phenylethyl (Meth)acrylate

2018 ◽  
Vol 8 (3) ◽  
pp. 585-594
Author(s):  
Khdbudin Mulani ◽  
Ravindra Ghorpade ◽  
Surendra Ponrathnam ◽  
Nayaku Chavan ◽  
Kamini Donde
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Isothermal Kinetics ◽  
Kinetics Of

Critically evaluated rate coefficients for free-radical polymerization, 3. Propagation rate coefficients for alkyl methacrylates

2000 ◽  
Vol 201 (12) ◽  
pp. 1355-1364 ◽  
Author(s):  
Sabine Beuermann ◽  
Michael Buback ◽  
Thomas P. Davis ◽  
Robert G. Gilbert ◽  
Robin A. Hutchinson ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Propagation Rate ◽  
Rate Coefficients ◽  
Alkyl Methacrylates

Oxygen-Initiated Free-Radical Polymerization of Alkyl Acrylates at High Temperatures

2021 ◽  
Author(s):  
Shi Liu ◽  
Lauren Chua ◽  
Ahmad Arabi Shamsabadi ◽  
Patrick Corcoran ◽  
Abhirup Patra ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
High Temperatures ◽  
Free Radical Polymerization ◽  
Alkyl Acrylates

One-Pot Free Radical Polymerization/Hydroxyl-Isocyanate Reaction: A Facile Strategy to Synthesize Hyperbranched Glycopoly(MaM/IM) with Tunable Structures

2021 ◽  
Author(s):  
Qian Zhou ◽  
Yuangong Zhang ◽  
Liping Fang ◽  
Hao Guan ◽  
Xin Wen ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
One Pot
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