Characterization of commercial polybutylenes. part II. Crystallinity and tensile properties

Shaw, J. P.; Gilbert, Marianne

doi:10.1080/00222349108219479

Cited by 7 publications

(1 citation statement)

References 11 publications

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“…They then used density and wide angle X-ray techniques to show that applied stresses enhance the Form II to Form I transition. Shaw and Gilbert (1991) produced compression-molded samples from 8 different grades of material containing PB-1 and other olefins; in a later paper (1994) they also produced fibers from these 8 polymers. They showed that the presence of other olefins (as a comonomer or a blend) affects the sample crystallinity and, hence, the physical properties of the sample.…”

Section: Poly(1-butene)mentioning

confidence: 99%

Melt-Spun Polybutylene Fibers and Nonwovens

Ortiz

Shambaugh

2005

International Nonwovens Journal

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Polybutylene (PB-1) fibers were spun at spinning speeds of 250-2500 m/min. A tensile tester was used to analyze the stress-strain behavior of these fibers. In addition, birefringence and the effect of aging were examined. A DMA (dynamic mechanical analyzer) was used to measure the storage modulus and loss modulus of the fibers. Nonwoven mats of the fibers were prepared and compression tests were run on these mats. The properties of the polybutylene fibers and mats were compared with the properties of common polypropylene fibers and mats.

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Section: Poly(1-butene)mentioning

confidence: 99%

Melt-Spun Polybutylene Fibers and Nonwovens

Ortiz

Shambaugh

2005

International Nonwovens Journal

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Polymers of Higher Olefins

Kissin¹

2000

Kirk-Othmer Encyclopedia of Chemical Technology

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The article describes polymeric materials derived from the higher α‐olefins with carbon atom numbers of four or higher as well as polymers of cycloolefins. Crystalline polymers of higher α‐olefins belong to two classes of stereoregular polymers, isotactic and syndiotactic. Isotactic polymers are produced with two types of catalysts, heterogeneous Ziegler‐Natta catalysts and bridged metallocene catalysts. Other metallocene catalysts produce either crystalline syndiotactic polymers or amorphous atactic polymers. Higher α‐olefins can also be polymerized with cationic initiators to amorphous oligomeric materials. Cycloolefins are polymerized by two different mechanisms: the ring‐opening metathesis reaction catalyzed by tungsten or molybdenum compounds, and polymerization reactions without ring opening catalyzed by metallocenes. Two isotactic polymers of higher α‐olefins, poly(1‐butene) and poly(4‐methyl‐1‐pentene), as well as oligomers of linear α‐olefins and polymers of certain cycloolefins (polydicyclopentadiene, polyoctenamers, and norbornene elastomers) are produced commercially. Crystalline poly(1‐butene) is used to manufacture pipe, tubing, and blown film. Crystalline poly(4‐methyl‐1‐pentene) is a highly transparent plastic used for the manufacture of medical and chemical laboratory equipment as well as a variety of injection‐molded articles. Liquid oligomers of higher linear α‐olefins produced with cationic initiators have found wide applications as base oils in the formulation of various industrial lubricants; among other applications, they are used in synthetic lubricating oils for cars, transformer oils, and transmission and crankcase fluids. Polymers of cyclooctene are mostly used as components in rubber and compositions based on PVC or polystyrene. Cured liquid‐molding resins based on polydicyclopentadiene are used for the manufacture of automotive parts for trucks, snowmobiles, wheel loaders, and recreational vehicles.

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Polymers of Higher Olefins

Kissin

2005

Kirk-Othmer Encyclopedia of Chemical Technology

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This article describes polymeric materials derived from higher olefins, α‐olefins with carbon atom numbers 4 and higher, and from cycloolefins. Both higher α‐olefins and cycloolefins can produce homopolymers and copolymers with lighter olefins, mostly with ethylene. Crystalline polymers of higher α‐olefins belong to two classes of stereoregular polymers, isotactic and syndiotactic. Isotactic polymers are produced with two types of catalysts, heterogeneous Ziegler–Natta catalysts and some bridged metallocene catalysts. Other types of metallocene catalysts produce either crystalline syndiotactic polymers or amorphous atactic polymers. Higher α‐olefins can also be polymerized with cationic initiators to amorphous oligomeric materials. Cycloolefins are polymerized via two different mechanisms: the ring‐opening metathesis reaction catalyzed with tungsten, ruthenium, or molybdenum compounds, and polymerization reactions without cycle opening catalyzed with metallocene complexes. Several types of polymers and copolymers of higher α‐olefins and cycloolefins are produced commercially: Isotactic crystalline poly(1‐butene) (PB) and poly(4‐methyl‐1‐pentene) (PMP). Oligomers of linear α‐olefins, viscous liquids. Copolymers of cycloolefins, such as cyclopentene or norbornene, and ethylene, tough amorphous transparent plastics. Polymers of cycloolefins, poly(dicyclopentadiene), poly(cyclooctene), and poly(norbornene). Copolymers of higher α‐olefins with ethylene containing from 6 to 50 wt% of higher α‐olefins. Due to high commercial significance of these materials, they are described in a separate article, “Polyethylene, Linear Low Density”. Crystalline PB is used to manufacture pipe, tubing, and blown film. Crystalline PMP is a highly transparent plastic. It is used for the manufacture of medical equipment, chemical laboratory equipment, and a variety of injection‐molded articles. Liquid oligomers of higher linear α‐olefins produced with cationic initiators have found wide applications as base oils in the formulation of various industrial lubricants. They are used in synthetic lubricating oils for cars, transformer oils, transmission and crankcase fluids, etc. Copolymers of cycloolefins and ethylene are amorphous materials with high glass points. They are used as transparent specialty plastics with high toughness. Polymer of cyclooctene is an elastic material of low crystallinity; it is mostly used as a component in rubber, poly (vinyl chloride) (PVC)‐ and poly (styrene) (PS)‐based compositions. Cured liquid‐molding resins based on poly(dicyclopentadiene) are used for the manufacture of automotive parts for trucks, snowmobiles, wheel loaders, and recreational vehicles.

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Characterization of commercial polybutylenes. part II. Crystallinity and tensile properties

Cited by 7 publications

References 11 publications

Melt-Spun Polybutylene Fibers and Nonwovens

Melt-Spun Polybutylene Fibers and Nonwovens

Polymers of Higher Olefins

Polymers of Higher Olefins

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