Degradation of poly(D,L-lactic acid)-b-poly(ethylene glycol)-b-poly(D,L-lactic acid) copolymer by electron beam radiation

2009 ◽  
Vol 112 (5) ◽  
pp. 2981-2987 ◽  
Author(s):  
Peikai Miao ◽  
Chun'e Zhao ◽  
Guoliang Xu ◽  
Qiang Fu ◽  
Wenrui Tang ◽  
...  
2007 ◽  
Vol 57 (2) ◽  
pp. 268-274 ◽  
Author(s):  
Jun Li ◽  
Yinglei Zhai ◽  
Bin Zhang ◽  
Liandong Deng ◽  
Yongshen Xu ◽  
...  

2005 ◽  
Vol 98 (5) ◽  
pp. 2116-2122 ◽  
Author(s):  
Liandong Deng ◽  
Aigui Li ◽  
Chunmei Yao ◽  
Duoxian Sun ◽  
Anjie Dong

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Peikai Miao ◽  
Dimeng Wu ◽  
Chun’e Zhao ◽  
Guoliang Xu ◽  
Ke Zeng ◽  
...  

AbstractPoly(D,L-lactic acid)-co-poly(ethylene glycol) copolymer (D,L-PLEG) synthesized by melt polycondensation was irradiated using low energy electron beam (EB) in the presence of triallyl cyanurate (TAC) and tetraallyl pentaerythritol (TAPE) as crosslinking agents. The tensile strength of D,L-PLEG/TAC and D,L-PLEG/TAPE samples increases up to 48 MPa and 28 MPa at dose of 80 kGy and 60 kGy, respectively, and decreases with further increase of dose, whereas the elongation at break decreases continuously with increasing dose. The glass transition temperature (Tg) is improved to some extent due to the formation of molecular chain network. Degradation of D,L-PLEG is retarded with introduction of cross-linked network. The results suggest that the physical properties of crosslinked D,L-PLEG can be adjusted easily by varying irradiation dose.


2004 ◽  
Vol 282 (12) ◽  
pp. 1323-1328 ◽  
Author(s):  
Yan Zhang ◽  
Qizhi Zhang ◽  
Liusheng Zha ◽  
Wuli Yang ◽  
Changchun Wang ◽  
...  

2015 ◽  
Vol 133 (8) ◽  
pp. n/a-n/a ◽  
Author(s):  
Weraporn Pivsa-Art ◽  
Kazunori Fujii ◽  
Keiichiro Nomura ◽  
Yuji Aso ◽  
Hitomi Ohara ◽  
...  

2017 ◽  
Vol 50 (14) ◽  
pp. 5527-5538 ◽  
Author(s):  
Vincent E. G. Diederich ◽  
Thomas Villiger ◽  
Giuseppe Storti ◽  
Marco Lattuada

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