Structure evolution during phase separation and gelation of biopolymer mixtures

2007 ◽  
pp. 298-308 ◽  
Author(s):  
Niklas Lorén ◽  
Anne-Marie Hermansson
Keyword(s):  
Phase Separation ◽  
Structure Evolution

Instantaneous Phase Separation at the Contact Surface in Compression Molding of Immiscible Polymer Blend

2010 ◽  
Author(s):  
Wei Zhang ◽  
Min Li ◽  
Sarang Deodhar ◽  
Donggang Yao ◽  
Jack G. Zhou
Keyword(s):  
Phase Separation ◽  
Compression Ratio ◽  
Contact Surface ◽  
Phase Structure ◽  
Compression Molding ◽  
Continuous Phase ◽  
Structure Evolution ◽  
Compression Rate ◽  
Mold Surface ◽  
Immiscible Polymer

Immiscible polymer blends with a co-continuous phase structure (CPS) can yield synergistic material properties. In this study, a 50/50 wt% PLA/PS blend with CPS was used as a model system to explore the influence of compression molding conditions (including compression rate, compression ratio, and mold surface characteristics) on the final phase structure of the molded part. The microscopic characterization clearly demonstrated the instantaneous formation of a PLA rich layer at the mold contact surface when a high compression ratio and fast compression rate were applied during molding. CFD simulations were performed to numerically study the effects of compression on phase structure evolution in binary blends. If harnessed appropriately, this phase separation process may be utilized for creating innovative material structures.

Deformation-induced structure evolution of poly(butylene terephthalate)/poly(carbonate) blends during uniaxial stretching

CrystEngComm ◽  
2017 ◽  
Vol 19 (45) ◽  
pp. 6858-6868 ◽  
Author(s):  
Wenyang Zhang ◽  
Jingqing Li ◽  
Yingrui Shang ◽  
Hongfei Li ◽  
Shichun Jiang ◽  
...  
Keyword(s):  
Phase Separation ◽  
Structure Evolution ◽  
Large Strains ◽  
Macroscopic Strain ◽  
Uniaxial Stretching ◽  
Butylene Terephthalate ◽  
Leading Role ◽  
Induced Structure ◽  
Poly Carbonate

Phase separation occurs during deformation for all the PBT/PC samples. At large strains, microfibril slippage plays a leading role in the macroscopic strain.

Structure Evolution in Amylopectin/Ethylene Glycol Mixtures by H-bond Formation and Phase Separation Studied with Dielectric Relaxation Spectroscopy

2001 ◽  
Vol 105 (24) ◽  
pp. 5630-5636 ◽  
Author(s):  
A. L. M. Smits ◽  
M. Wübbenhorst ◽  
P. H. Kruiskamp ◽  
J. J. G. van Soest ◽  
J. F. G. Vliegenthart ◽  
...  
Keyword(s):  
Phase Separation ◽  
Ethylene Glycol ◽  
Dielectric Relaxation ◽  
Bond Formation ◽  
Structure Evolution ◽  
Dielectric Relaxation Spectroscopy

scholarly journals Site-selective doping effect, phase separation, and structure evolution in 1:1:1 triple-cation B-site ordered perovskites Ca4−xSrxGaNbO8

RSC Advances ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 1883-1889
Author(s):  
He Huang ◽  
Pengfei Jiang ◽  
Wenliang Gao ◽  
Rihong Cong ◽  
Tao Yang
Keyword(s):  
Phase Separation ◽  
Doping Effect ◽  
Structure Evolution ◽  
Selective Doping ◽  
Site Selective ◽  
Effect Phase

Sr2+-to-Ca2+ substitution resulted in new 1:1:1 triple-cation B-site ordered perovskites, where the structure difference lies in the orientations of GaO4-tetrahedra.

Structure evolution during phase separation in spin-coated ethylcellulose/hydroxypropylcellulose films

Soft Matter ◽  
2021 ◽  
Author(s):  
Pierre Carmona ◽  
Magnus Röding ◽  
Aila Särkkä ◽  
Christian von Corswant ◽  
Eva Olsson ◽  
...  
Keyword(s):  
Phase Separation ◽  
Drug Release ◽  
Film Thickness ◽  
Spin Coating ◽  
Good Control ◽  
Controlled Drug Release ◽  
Structure Evolution ◽  
Length Scale ◽  
Method Optimization

Porous phase-separated films made of ethylcellulose (EC) and hydroxypropylcellulose (HPC) for controlled drug release were made using spin-coating. The method optimization gave good control over the film thickness and the length scale.

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