Study of heat of micellization and phase separation for Pluronic aqueous solutions by using a high sensitivity differential scanning calorimetry

2010 ◽  
Vol 288 (18) ◽  
pp. 1687-1696 ◽  
Author(s):  
Hung-Wei Tsui ◽  
Jing-Han Wang ◽  
Ya-Hui Hsu ◽  
Li-Jen Chen
Keyword(s):  
Differential Scanning Calorimetry ◽  
Phase Separation ◽  
Aqueous Solutions ◽  
High Sensitivity ◽  
Scanning Calorimetry

scholarly journals Improved Processing and Properties for Polyphenylene Oxide Modified by Diallyl Orthophthalate Prepolymer

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2016
Author(s):  
Honghua Wang ◽  
Qilin Mei ◽  
Yujie Ding ◽  
Zhixiong Huang ◽  
Minxian Shi
Keyword(s):  
Differential Scanning Calorimetry ◽  
Thermal Properties ◽  
Phase Separation ◽  
Dilution Effect ◽  
Gradual Decrease ◽  
Gel Point ◽  
Dynamic Mode ◽  
Curing Process ◽  
Scanning Calorimetry ◽  
Polyphenylene Oxide

Diallyl orthophthalate (DAOP) prepolymer was investigated as a reactive plasticizer to improve the processability of thermoplastics. The rheology of blends of DAOP prepolymer initiated by 2,3-dimethyl-2,3-diphenylbutane (DMDPB) and polyphenylene oxide (PPO) was monitored during the curing process, and their thermal properties and morphology in separated phases were also studied. Differential scanning calorimetry (DSC) results showed that the cure degree of the reactively plasticized DAOP prepolymer was reduced with increasing PPO due to the dilution effect. The increasing amount of the DAOP prepolymer led to a gradual decrease in the viscosity of the blends and the rheology behavior was consistent with the chemical gelation of DAOP prepolymer in blends. This indicated that the addition of the DAOP prepolymer effectively improved processability. The phase separation occurring during curing of the blend and the transition from the static to dynamic mode significantly influences the development of the morphology of the blend corresponding to limited evolution of the conversion around the gel point.

scholarly journals Thermal Analyses of Polyol-Aqueous Solutions below 0.DEG.C. by Differential Scanning Calorimetry.

1997 ◽  
Vol 44 (5) ◽  
pp. 380-385 ◽  
Author(s):  
Tatsuya URAJI ◽  
Hiroyuki KOHNO ◽  
Kyoko NAKASHIMA ◽  
Makoto SHIMOYAMADA ◽  
Kenji WATANABE
Keyword(s):  
Differential Scanning Calorimetry ◽  
Aqueous Solutions ◽  
Thermal Analyses ◽  
Scanning Calorimetry
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