Thermodynamics of polyolefin blends: small-angle neutron scattering studies with partially deuterated chains

Nicholson, James; Finerman, Terry M.; Crist, Buckley

doi:10.1016/0032-3861(90)90314-o

Cited by 43 publications

(29 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…C defines the miscibility between linear C 4 unit in LPE and branched C 4 unit in poly(1‐butene). A series of separate SANS experiments with the same series of copolymers indicated that the copolymer equation correctly describes the relation between the interaction parameter and the composition of copolymer 16. Therefore, this method was thought to be used for the evaluation of interaction parameter of random copolymer blends.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Melt‐state miscibility of poly(ethylene‐co‐1‐octene) and linear polyethylene

Shin

Nam

Bang

et al. 2007

J of Applied Polymer Sci

View full text Add to dashboard Cite

On purpose to examine the effect of branch length on the miscibility of polyolefin blends, miscibility behavior of linear polyethylene/poly(ethylene-co-1-octene) blend was studied and compared to that of linear polyethylene/poly(ethylene-co-1-butene) blend. Miscibility of the blend was determined by observing the morphology quenched from the melt, and by using the relation between interaction parameter and copolymer composition. When the weight composition and molecular weight was the same, poly(ethylene-co-1-octene) was slightly more miscible with linear polyethylene than poly(ethylene-co-1-butene) was.

show abstract

Section: Resultsmentioning

confidence: 99%

“…To elucidate the effect of branch length on the miscibility of branched PE to LPE, the result is compared with that of LPE/EB blend obtained by Rhee and Crist 9, 16. Since their result is based on C 4 units, there needs a conversion of C 4 units to C 8 units for comparison.…”

Section: Resultsmentioning

confidence: 99%

Melt‐state miscibility of poly(ethylene‐co‐1‐octene) and linear polyethylene

Shin

Nam

Bang

et al. 2007

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Recently, much work has been done to prove the liquid–liquid phase separation of blends of linear polyethylene (LPE) and SCB polyethylene by using very complicated techniques, such as TEM (bulk and thin film samples), rheological and diffusion rate measurements, and small angle neutron scattering (SANS) 8–11. Due to its inter‐ and intra‐molecular heterogeneity, SCBPE is actually a blend of molecules with different branching contents 12.…”

Section: Resultsmentioning

confidence: 99%

Phase separation in semicrystalline polymer blends and copolymers studied via thermal segregation and crystallization kinetics

Zhang

Peng

et al. 2000

Polym. Int.

View full text Add to dashboard Cite

“…Blends of iPP/EPR were immiscible with as low as 8 wt% ethylene in EPR. Crist and coworkers [97,98] studied blends of linear PE with hydrogenated polybutadiene with SANS to determine the interaction parameter as a function of ethyl branches.…”

Section: Neutron Scatteringmentioning

confidence: 99%

Rubber–Plastic Blends: Structure–Property Relationship

Datta

2016

Encyclopedia of Polymer Blends

View full text Add to dashboard Cite

Blends of rubbers and plastics have both an extensive history and a variety of applications, since blends retain most of the stiffness of thermoplastics and impart some of the resilience and the impact toughness of rubbers. Most useful blends have morphology of rubber dispersed in the thermoplastic matrix since the reverse does not lead to same degree of utility. The properties of these blends depend on the relative ratio of the rubber and the plastic and, more importantly, on the morphology of the dispersion. A very large research effort has been made in an attempt to control and determine the morphology and the interface of the rubber and the plastic as well as understand the effect of the rubber dispersion on the properties of the blend. Blends are important commercially since they allow the development of unique properties from the same constituents with small changes in the relative amounts or the dispersion. The conventional prac tice of blend formation is the melt mixing of the components although, in some cases, a polymerization process that enables the direct production of the binary blend is possible. These direct production processes are efficient since they pro duce the desired morphology and the required polymers in a single step. Blends have become extremely important for the development of polyolefin rubbers and plastics since a large variety can be mixed in a wide composition ratio to produce novel properties. These blends are easily made and have stable dispersion during processing due to only small thermodynamic differences between the various polyolefins compared with engineering thermoplastics. This chapter describes the physics and the chemistry and more importantly the relationship between the structure of the blend and its properties. This area has been continually progressed [1] and reviewed [2]. Progress arises from new materials and new technologies for making rubber-plastic blends. The area of polyethylene blends cited above is an important development. The Encyclopedia of Polymer Blends: Volume 3: Structure, First Edition. Edited by Avraam I. Isayev.

show abstract

Thermodynamics of polyolefin blends: small-angle neutron scattering studies with partially deuterated chains

Cited by 43 publications

References 31 publications

Melt‐state miscibility of poly(ethylene‐co‐1‐octene) and linear polyethylene

Melt‐state miscibility of poly(ethylene‐co‐1‐octene) and linear polyethylene

Phase separation in semicrystalline polymer blends and copolymers studied via thermal segregation and crystallization kinetics

Rubber–Plastic Blends: Structure–Property Relationship

Contact Info

Product

Resources

About