scholarly journals Isothermal Crystallization Behavior of the Poly(L-lactide) Block in Poly(L-lactide)-Poly(ethylene glycol) Diblock Copolymers: Influence of the PEG Block as a Diluted Solvent

2006 ◽  
Vol 38 (12) ◽  
pp. 1251-1257 ◽  
Author(s):  
Junliang Yang ◽  
Ting Zhao ◽  
Leijing Liu ◽  
Yunchun Zhou ◽  
Gao Li ◽  
...  
2011 ◽  
Vol 18 (6) ◽  
pp. 2161-2168 ◽  
Author(s):  
Jingru Sun ◽  
Chaoliang He ◽  
Xiuli Zhuang ◽  
Xiabin Jing ◽  
Xuesi Chen

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1156
Author(s):  
Dejia Chen ◽  
Lisha Lei ◽  
Meishuai Zou ◽  
Xiaodong Li

The non-isothermal crystallization kinetics of double-crystallizable poly(ethylene glycol)–poly(l-lactide) diblock copolymer (PEG-PLLA) and poly(ethylene glycol) homopolymer (PEG) were studied using the fast cooling rate provided by a Fast-Scan Chip-Calorimeter (FSC). The experimental data were analyzed by the Ozawa method and the Kissinger equation. Additionally, the total crystallization rate was represented by crystallization half time t1/2. The Ozawa method is a perfect success because secondary crystallization is inhibited by using fast cooling rate. The first crystallized PLLA block provides nucleation sites for the crystallization of PEG block and thus promotes the crystallization of the PEG block, which can be regarded as heterogeneous nucleation to a certain extent, while the method of the PEG block and PLLA block crystallized together corresponds to a one-dimensional growth, which reflects that there is a certain separation between the crystallization regions of the PLLA block and PEG block. Although crystallization of the PLLA block provides heterogeneous nucleation conditions for PEG block to a certain extent, it does not shorten the time of the whole crystallization process because of the complexity of the whole crystallization process including nucleation and growth.


2010 ◽  
Vol 36 (4) ◽  
pp. 456-469 ◽  
Author(s):  
Roudayna Diab ◽  
Misara Hamoudeh ◽  
Olivier Boyron ◽  
Abdelhamid Elaissari ◽  
Hatem Fessi

2015 ◽  
Vol 6 (45) ◽  
pp. 7812-7820 ◽  
Author(s):  
Aydan Dag ◽  
Hongxu Lu ◽  
Martina Stenzel

Poly[(2-(α-d-mannosyloxy)ethyl acrylate)-block-(n-butyl acrylate)], P(ManA-b-BA), and poly[poly(ethylene glycol) methyl ether acrylate]-block-(n-butyl acrylate)], P(OEGMEA-b-BA) diblock copolymers were mixed at various ratios to generate self-assembled structures of different morphologies.


2002 ◽  
Vol 80 (1-3) ◽  
pp. 157-168 ◽  
Author(s):  
Andrea Lucke ◽  
Elisabetta Fustella ◽  
Jörg Teßmar ◽  
Andrea Gazzaniga ◽  
Achim Göpferich

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