Preparation, structure, and properties of two-phase co-continuous polymer blends

1988 ◽  
Vol 28 (12) ◽  
pp. 796-805 ◽  
Author(s):  
Isabel S. Miles ◽  
Andrew Zurek
Keyword(s):  
Polymer Blends ◽  
Structure And Properties ◽  
Two Phase

Influence of selective filling on rheological properties and phase inversion of two-phase polymer blends

Polymer ◽  
2002 ◽  
Vol 43 (16) ◽  
pp. 4467-4477 ◽  
Author(s):  
Sandra Steinmann ◽  
Wolfram Gronski ◽  
Christian Friedrich
Keyword(s):  
Polymer Blends ◽  
Rheological Properties ◽  
Phase Inversion ◽  
Two Phase

The Structure and Properties of Polyamide/Liquid Crystal Polymer Blends

2012 ◽  
Vol 52 (8) ◽  
pp. 1064-1072 ◽  
Author(s):  
Youbing Li ◽  
Wen Shi ◽  
Zhenzhen Sun ◽  
Yan Pan ◽  
Xumin Sheng ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Polymer Blends ◽  
Liquid Crystal Polymer ◽  
Structure And Properties ◽  
Crystal Polymer

Polymer/Clay Nanocomposites Produced by Dispersing Layered Silicates in Thermoplastic Melts

2021 ◽  
pp. 1002-1030
Author(s):  
S. S. Pesetskii ◽  
S. P. Bogdanovich ◽  
V. N. Aderikha
Keyword(s):  
Polymer Blends ◽  
Hybrid Composites ◽  
Structural Features ◽  
Layered Silicates ◽  
Clay Nanocomposites ◽  
Structure And Properties ◽  
High Modulus ◽  
Thermoplastic Polymers ◽  
Technological Factors ◽  
Melt Compounding

Results of the studies of technology, structural features and properties of polymer/clay nanocomposites (n-PCM) prepared by melt compounding of thermoplastic polymers are systematized. Special attention is given to the analysis of the effect of nanoclays modification with surfactants on properties of nanocomposites and preparation features of nanomaterials based on polar, non-polar thermoplastics and polymer blends. Effect of technological factors and special compounding regimes in the technology of n-PCM with advanced technical characteristics is considered. Results of the original studies of the structure and properties of the hybrid composites, filled by high modulus fibers in addition to nanoclays, are presented.

Morphology Evolution in Immiscible Polymer Blends during Compounding

2006 ◽  
Author(s):  
Chang Dae Han
Keyword(s):  
Melting Point ◽  
Polymer Blends ◽  
Rheological Properties ◽  
Morphology Evolution ◽  
Two Phase ◽  
Immiscible Polymers ◽  
Blend Morphology ◽  
Twin Screw ◽  
Buss Kneader ◽  
Batch Mixer

Polymer researchers have had a long-standing interest in understanding the evolution of blend morphology when two (or more) incompatible homopolymers or copolymers are melt blended in mixing equipment. In industry, melt blending is conducted using either an internal (batch) mixer (e.g., a Banbury mixer or a Brabender mixer) or a continuous mixer (e.g., a twin-screw extruder or a Buss kneader). There are many factors that control the evolution of blend morphology during compounding, the five primary ones being (1) blend composition, (2) rheological properties (e.g., viscosity ratio) of the constituent components, (3) mixing temperature, which in turn affects the rheological properties of the constituent components, (4) the duration of mixing in a batch mixer or residence time in a continuous mixer, and (5) rotor speed in a batch mixer or screw speed in a continuous mixer (i.e., local shear rate or shear stress). When two immiscible polymers are compounded in mixing equipment, two types of blend morphology are often observed: dispersed morphology and co-continuous morphology. Numerous investigators have reported on blend morphology of immiscible polymers, and there are too many papers to cite them all here. Some investigators (Han 1976, 1981; Han and Kim 1975; Han and Yu 1972; Nelson et al. 1977; van Oene 1978) examined blend morphology to explain the seemingly very complicated rheological behavior of two-phase polymer blends, and others (Favis and Therrien 1991; He et al. 1997; Ho et al. 1990; Miles and Zurek 1988; Scott and Macosko 1995; Shih 1995; Sundararaj et al. 1992, 1996) investigated blend morphology as affected by processing conditions. Today, it is fairly well understood from experimental studies under what conditions a dispersed morphology or a co-continuous morphology may be formed, and whether a co-continuous morphology is stable, giving rise to an equilibrium morphology, or whether it is an unstable intermediate morphology that eventually is transformed into a dispersed morphology (Lee and Han 1999a, 1999b, 2000). Let us consider the morphology evolution in an immiscible blend consisting of two semicrystalline polymers, A and B, in a compounding machine, and let us assume that the melting point (Tm,A) of polymer A is lower than the melting point (Tm,B) of polymer B.

Influence of calcium carbonate filler and mixing type process on structure and properties of styrene-acrylonitrile/ethylene-propylene-diene polymer blends

2012 ◽  
Vol 126 (4) ◽  
pp. 1257-1266 ◽  
Author(s):  
Ljerka Kratofil Krehula ◽  
Anita Ptiček Siročić ◽  
Zvonimir Katančić ◽  
Jasenka Jelenčić ◽  
Vera Kovačević ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Polymer Blends ◽  
Structure And Properties ◽  
Ethylene Propylene ◽  
Type Process ◽  
Carbonate Filler ◽  
Styrene Acrylonitrile

Structure and Properties of Blends of Polycarbonate and Poly(Ethylene-Terephthalate-Co-p-Hydroxybenzoate): Phase Diagram and Mechanical Behavior

1989 ◽  
Vol 171 ◽  
Author(s):  
Robert Kosfeld ◽  
Frank Schubert ◽  
Michael Hess ◽  
Witold Brostow
Keyword(s):  
Phase Diagram ◽  
Liquid Crystal ◽  
Thermal Behavior ◽  
Polymer Blends ◽  
Ethylene Terephthalate ◽  
Structure And Properties ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Equilibrium Phases ◽  
Polymer Liquid Crystal

ABSTRACTThe investigation of the thermal behavior of polymer blends leads to phase diagrams which involve Important information about the system. From these diagrams, equilibrium as well as non-equilibrium phases can be deduced and ranges of miscibility or partial miscibility of the polymers become obvious. Hence the diagrams are of a great value for processing of advanced polymer blends, especially If a polyphasic polymers such as a polymer liquid crystal is one of the constituents of the system.

Sign in / Sign up

Export Citation Format

Share Document