SAXS/WAXS/DSC studies on crystallization of a polystyrene-b-poly(ethylene oxide)-b-polystyrene triblock copolymer with lamellar morphology and low glass transition temperature

2003 ◽  
Vol 39 (11) ◽  
pp. 2091-2098 ◽  
Author(s):  
Jun-Ting Xu ◽  
Jian-Jun Yuan ◽  
Si-Yuan Cheng
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ethylene Oxide ◽  
Triblock Copolymer ◽  
Dsc Studies ◽  
Lamellar Morphology ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Dynamic relaxation of polystyrene/poly(ethylene oxide) blends above glass transition temperature

2007 ◽  
Vol 56 (8) ◽  
pp. 4798
Author(s):  
Wu Xue-Bang ◽  
Shang Shu-Ying ◽  
Xu Qiao-Ling ◽  
Shui Jia-Peng ◽  
Zhu Zhen-Gang
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ethylene Oxide ◽  
Dynamic Relaxation ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Miscibility and Thermal Properties of Bacterial Poly(3-Hydroxybutyrate-co-3-hydroxyhexanoate)/Poly(Ethylene oxide) Blends

2012 ◽  
Vol 602-604 ◽  
pp. 772-775 ◽  
Author(s):  
Chang Kun Ding ◽  
Bo Wen Cheng ◽  
Qiong Wu
Keyword(s):  
Glass Transition ◽  
Thermal Properties ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ethylene Oxide ◽  
Biomedical Applications ◽  
Scanning Calorimetry ◽  
Poly Ethylene Oxide ◽  
Complete Miscibility ◽  
Poly Ethylene

The miscibility and thermal properties of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)/poly(ethylene oxide) blends were investigated by differential scanning calorimetry (DSC). The results indicated that PHBHHx showed complete miscibility with PEO for PHBHHx/PEO 95/5, 90/10 and 80/20 blends as evidenced by the single composition-dependent glass transition temperature and the depression of the melting temperature of PHBHHx. However, PHBHHx showed partial miscibility with PEO for the other three blends as shown by the existence of unchanged composition independent glass transition temperature. The incorporation of PEO may improve the performances of PHBHHx to meet the different need in biomedical applications.

Cluster–Micelle Transition of a Thermo- and Photoresponsive ABC Triblock Copolymer in an Ionic Liquid

2019 ◽  
Vol 72 (2) ◽  
pp. 155
Author(s):  
Aya Saruwatari ◽  
Kei Hashimoto ◽  
Ryota Tamate ◽  
Ryoji Usui ◽  
Hisashi Kokubo ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Transition Temperature ◽  
Ethylene Oxide ◽  
Uv Irradiation ◽  
Low Temperatures ◽  
Triblock Copolymer ◽  
Abc Triblock Copolymer ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Azobenzene Groups

We report the photocontrollable micelle–cluster transition of an ABC-type triblock copolymer in an ionic liquid (IL). Polystyrene-b-poly(ethylene oxide)-b-poly(4-phenylazobenzyl acrylamide-r-N-isopropylacrylamide) (PSt-b-PEO-b-P(AzoBnAm-r-NIPAm)) was synthesised, where PSt is IL-phobic, PEO is IL-philic, and P(AzoBnAm-r-NIPAm) is photo- and thermoresponsive in the IL. At high temperatures, the triblock copolymer forms micelles with PSt cores; furthermore, at low temperatures, micelles self-assemble into clusters induced by the aggregation of P(AzoBnAm-r-NIPAm). Under UV irradiation, the micelles form clusters at lower temperatures than that in the dark because of the change in the solubility of P(AzoBnAm-r-NIPAm) induced by photoisomerisation of the azobenzene groups, indicating that this triblock copolymer has a photocontrollable micelle–cluster transition temperature.

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