Microwave-assisted ring-opening polymerization of ?-caprolactone

2002 ◽  
Vol 40 (11) ◽  
pp. 1749-1755 ◽  
Author(s):  
L. Q. Liao ◽  
L. J. Liu ◽  
C. Zhang ◽  
F. He ◽  
R. X. Zhuo ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Microwave Assisted

Thermoforming starch-graft-polycaprolactone biocomposites via one-pot microwave assisted ring opening polymerization

2009 ◽  
Vol 113 (5) ◽  
pp. 2973-2979 ◽  
Author(s):  
Peter R. Chang ◽  
Ziyan Zhou ◽  
Peihu Xu ◽  
Yun Chen ◽  
Shaofeng Zhou ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
One Pot ◽  
Microwave Assisted

Microwave-assisted ring-opening polymerization of poly (glycolic acid-co-lactic acid) copolymers

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Guang Li ◽  
Na Zhao ◽  
Wei Bai ◽  
Dong Liang Chen ◽  
Cheng Dong Xiong
Keyword(s):  
Lactic Acid ◽  
Ring Opening ◽  
Glycolic Acid ◽  
Raw Materials ◽  
Irradiation Time ◽  
Ring Opening Polymerization ◽  
Feed Ratio ◽  
Microwave Assisted Synthesis ◽  
Component Ratio ◽  
Microwave Assisted

AbstractThe microwave-assisted synthesis of poly(glycolic acid-co-lactic acid) (PGLA) copolymers by ring-opening polymerization of glycolide (GA) and L-lactide (L-LA) was studied. The microwave irradiation time and feed ratios on the molecular weights, as well as the thermal properties of the copolymers were discussed. These copolymers were characterized by 1H-NMR, GPC and DSC. It was found that the largest molecular weight ([η]: 0.8745 dL/g) of PGLA5050 was obtained at the irradiation time of 5 min. The color of the copolymers changed from white to light brown, and the yield was higher with the extension of the irradiation time. The molar component ratio of GA in PGLA (FG) was higher than the initial GA feed ratio (nGA) in the raw materials. As the nGA content increased, the glass transition temperature (Tg) of the copolymers decreased and the melting temperature (Tm) of the copolymers increased.

Microwave-Assisted Cationic Ring-Opening Polymerization of 2-Oxazolines:  A Powerful Method for the Synthesis of Amphiphilic Triblock Copolymers

2006 ◽  
Vol 39 (14) ◽  
pp. 4719-4725 ◽  
Author(s):  
Richard Hoogenboom ◽  
Frank Wiesbrock ◽  
Haiying Huang ◽  
Mark A. M. Leenen ◽  
Hanneke M. L. Thijs ◽  
...  
Keyword(s):  
Ring Opening ◽  
Triblock Copolymers ◽  
Ring Opening Polymerization ◽  
Powerful Method ◽  
Microwave Assisted ◽  
Cationic Ring Opening Polymerization
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