Internal Phase Separation Drives Dewetting in Polymer Blend and Nanocomposite Films

2007 ◽  
Vol 40 (2) ◽  
pp. 384-388 ◽  
Author(s):  
Hyun-joong Chung ◽  
Kohji Ohno ◽  
Takeshi Fukuda ◽  
Russell J. Composto
Keyword(s):  
Phase Separation ◽  
Polymer Blend ◽  
Nanocomposite Films ◽  
Internal Phase

Preparation of Chitin Whisker and Effect to Crystallization of Polylactide

2018 ◽  
Vol 773 ◽  
pp. 82-87
Author(s):  
Nichaphat Passornraprasit ◽  
Wanpen Tachaboonyakiat
Keyword(s):  
Phase Separation ◽  
Transition Temperature ◽  
Nanocomposite Films ◽  
Degree Of Crystallinity ◽  
Thermal Transition ◽  
Hydrolysis Time ◽  
Film Extrusion ◽  
Agglomeration Of Nanoparticles ◽  
Acidolysis Reaction ◽  
The Degree Of Crystallinity

The aim of this study was to investigate the effect of chitin whisker (CW) to the crystallization of polylactide (PLA) nanocomposite films. CW which obtained from acidolysis reaction was compounded with PLA pellets into nanocomposite films by cast film extrusion. The morphology and crystallinity of CW were observed by TEM and XRD, illustrated that the dimension of whisker was affected by hydrolysis time. Increasing of hydrolysis time, the length of whisker was more regular with narrower distribution. Moreover, the crystallinity of whisker was obviously increased after acid hydrolysis. The nanocomposite film showed rough surface compared to pure PLA film due to some agglomeration of nanoparticles. However, CW and PLA were well-mixed with no phase separation. The introduction of 0.1 phr of CW decrease cold-crystallization temperature (Tcc) from about 121 °C to 118 °C and also increase the degree of crystallinity around 10%. There was no difference of thermal transition temperature between pure PLA and nanocomposite films with the addition of CW more than 0.1 phr which inspected by DSC. Despite the transition temperature express insignificantly different, the degree of crystallinity of nanocomposite was increase, indicating that chitin whisker would induce the crystallinity of PLA.

Controlling the internal morphology of aqueous core-PLGA shell microcapsules: promoting the internal phase separation via alcohol addition

2019 ◽  
Vol 24 (6) ◽  
pp. 671-679 ◽  
Author(s):  
Samer R. Abulateefeh ◽  
Ghada K. Al-Adhami ◽  
Mahmoud Y. Alkawareek ◽  
Alaaldin M. Alkilany
Keyword(s):  
Phase Separation ◽  
Internal Morphology ◽  
Internal Phase ◽  
Aqueous Core

Mechanical confinement effects on the phase separation morphology of polymer blend thin films

1998 ◽  
Vol 57 (5) ◽  
pp. 5811-5817 ◽  
Author(s):  
K. Dalnoki-Veress ◽  
J. A. Forrest ◽  
J. R. Dutcher
Keyword(s):  
Thin Films ◽  
Phase Separation ◽  
Polymer Blend ◽  
Confinement Effects

Bio-nanocomposite films based on cellulose nanocrystals filled polyvinyl alcohol/chitosan polymer blend

2015 ◽  
Vol 132 (22) ◽  
pp. n/a-n/a ◽  
Author(s):  
Nassima El Miri ◽  
Karima Abdelouahdi ◽  
Mohamed Zahouily ◽  
Aziz Fihri ◽  
Abdellatif Barakat ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Polymer Blend ◽  
Cellulose Nanocrystals ◽  
Nanocomposite Films

Periodic Porous Stripe Patterning in a Polymer Blend Film Induced by Phase Separation during Spin-Casting

Langmuir ◽  
2008 ◽  
Vol 24 (16) ◽  
pp. 8898-8903 ◽  
Author(s):  
Jae-Kyung Kim ◽  
Kentaro Taki ◽  
Shinsuke Nagamine ◽  
Masahiro Ohshima
Keyword(s):  
Phase Separation ◽  
Polymer Blend ◽  
Blend Film ◽  
Spin Casting ◽  
Polymer Blend Film

Phase Separation Kinetics of a Polymer Blend Modified by Random and Block Copolymer Additives

2001 ◽  
Vol 34 (3) ◽  
pp. 514-521 ◽  
Author(s):  
Bethany Barham ◽  
Kari Fosser ◽  
Gretchen Voge ◽  
Dean Waldow ◽  
Adel Halasa
Keyword(s):  
Phase Separation ◽  
Block Copolymer ◽  
Polymer Blend ◽  
Phase Separation Kinetics ◽  
Kinetics Of ◽  
Separation Kinetics
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