Melt-Spun Polybutylene Fibers and Nonwovens

Ortiz, Diana L.; Shambaugh, Robert L.

doi:10.1177/1558925005os-1400405

Cited by 3 publications

(4 citation statements)

References 16 publications

(5 reference statements)

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“…DSC scans for the highest and lowest polymer flowrates (the extremes) are shown in Figure 12. The melting peak that corresponds to the hexagonal form of PB-1 (Form I; see Ortiz and Shambaugh, 2005) shifted from a temperature of 121.9 o C for a flowrate of 0.23 g/min to a temperature of 114.1 o C for a flowrate of 1.00 g/min. Figure 12.…”

Section: Dsc Resultsmentioning

confidence: 99%

“…The polypropylene had a MFR of 88, an M w of 165,000 g/mol, and a polydispersity of 4. Further details on these polymers are contained tin the paper by Ortiz and Shambaugh (2005).…”

Section: Methodsmentioning

confidence: 99%

“…Lee and Chen added that the mechanism for this synergism is unclear. In a recent paper, Ortiz and Shambaugh (2005) spun pure polybutylene (PB-1) fibers at spinning speeds of 250-2500 m/min. A tensile tester was used to analyze the stress-strain behavior of these fibers.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Fibers Produced from Blends of Polybutylene and Polypropylene

Shambaugh

Ortiz

2007

Journal of Engineered Fibers and Fabrics

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Other crystalline polymer pairs have been studied wherein a synergism was found in their mechanical properties. For example, PP/HDPE was studied by Noel and Carley (1975) in a wide range of compositions. They found that very low amounts of HDPE caused a maximum in the tensile modulus and strength of the blends. They concluded that, when the HDPE component is less than 10%, the HDPE acts as a stiffener. In contrast, small amounts of PP were found to make the blend ductile. Stell et al. (1976) studied polymer blends of PS/HDPE in stretched films. These authors found that the mechanical properties of the films (tensile strength and elongation at break) were best when the films were quenched right after hot stretching. Blends of polybutylene (PB-1) and polypropylene were used to produce fibers at spinning speeds of 800-2100 m/min. Concentrations ranged from 0% PP to 100% PP. The stress-strain behavior of the resultant fibers was examined, and the fibers were analyzed for crystallinity via DSC (differential scanning calorimetry). Fibers produced from blends of PB-1/PP show mechanical properties that are in between the properties of the pure polymers. The tensile strength of 50% PB-1 fibers is comparable to the tensile strength of pure PP fibers. Fibers produced from blend compositions of 25 and 75% have higher tensile strengths than pure PP fibers, although these blend compositions have lower tensile strengths than pure PB fibers. The present study is concerned with crystalline blends of PB-1/PP and characterization of the fibers produced from these blends. Although this type of blend has been studied over the years, especially in the form of thin films and molded samples, there is little research on the characteristics of fibers formed from this particular blend. Foglia (1969) concluded that the PB-1/PP blends are "highly compatible in all proportions under normal operating conditions". In later studies, Siegmann (1979; 1982) examined the interactions of both components and found that the presence of PP in PB depresses the melting temperature of both components in the blend. From thermal analysis he found that PP and PB-1 seemed to crystallize separately with no evidence of cocrystallization. In addition, he reported that the crystallinity ratio of PB-1/PP is not linear with respect to percentage of composition. Siegmann also ran X-ray analyses that supported his conclusion that crystallinity ratio is not linear with respect to composition percentage. In addition, the X-ray results showed that the crystalline size did not change with the ratio of the polymers present in the blend. Siegmann suggested that the morphology of the blends changes from spherulite to branched crystallites as the composition changes.

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Section: Dsc Resultsmentioning

confidence: 99%

“…The polypropylene had a MFR of 88, an M w of 165,000 g/mol, and a polydispersity of 4. Further details on these polymers are contained tin the paper by Ortiz and Shambaugh (2005).…”

Section: Methodsmentioning

confidence: 99%

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Characterization of Fibers Produced from Blends of Polybutylene and Polypropylene

Shambaugh

Ortiz

2007

Journal of Engineered Fibers and Fabrics

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“…They found that higher spinning speeds caused an increase in crystallinity during the annealing step. Ortiz et al [ 33 ] showed that melt-spun PB-1 fiber has high modulus and toughness compared with polypropylene or polyester fiber when being spun at similar speeds (250–2500 m/min) and the properties of polybutene-1 nonwoven mats prepared with them changed less on aging. The crystallization behavior of PB-1 fiber membrane was studied by Lee et al [ 34 ] using electrospinning.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Tensile Properties of Melt-Spun Filaments of Polybutene-1 and Butene-1/Ethylene Copolymer

Li,

Qiao,

Zhang

et al. 2023

Polymers

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Polybutene-1 with form I crystals exhibits excellent creep resistance and environmental stress crack resistance. The filaments of polybutene-1 and its random copolymer with 4 mol% ethylene co-units were produced via extrusion melt spinning, which are expected to be in form I states and show outstanding mechanical properties. The variances in microstructure, crystallization–melting behavior, and mechanical properties between homopolymer and copolymer filaments were analyzed using SEM, SAXS/WAXD, DSC, and tensile tests. The crystallization of form II and subsequent phase transition into form I finished after the melt-spinning process in the copolymer sample while small amounts of form II crystals remained in homopolymer filaments. Surprisingly, copolymer filaments exhibited higher tensile strength and Young’s modulus than homopolymer filaments, while the homopolymer films showed better mechanical properties than copolymer films. The high degree of orientation and long fibrous crystals play a critical role in the superior properties of copolymer filaments. The results indicate that the existence of ethylene increases the chain flexibility and benefits the formation of intercrystalline links during spinning, which contributes to an enhancement of mechanical properties. The structure–property correlation of melt-spun PB-1 filaments provides a reference for the development of polymer fibers with excellent creep resistance.

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Effect of cross-sectional shape on the behaviour of cationic dyeable poly(ethylene terephthalate) fibres

Koc

Düzyer

Berger

et al. 2012

Textile Research Journal

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The effects of cross-sectional shape on the properties of cationic dyeable poly(ethylene terephthalate) fibres were investigated. Three different cross sections, namely tetra channel, snowflake and hollow, were used. Tensile test results showed that the hollow cross section has the highest breaking strength, while the snowflake has the lowest. In terms of thermal properties, no significant difference was observed. However, some differences in their morphology and surface topography were seen. According to birefringence studies, the hollow cross section has the highest overall orientation, while tetra has the lowest. In addition to this, hollow cross section gives the highest roughness value.

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Melt-Spun Polybutylene Fibers and Nonwovens

Cited by 3 publications

References 16 publications

Characterization of Fibers Produced from Blends of Polybutylene and Polypropylene

Characterization of Fibers Produced from Blends of Polybutylene and Polypropylene

Microstructure and Tensile Properties of Melt-Spun Filaments of Polybutene-1 and Butene-1/Ethylene Copolymer

Effect of cross-sectional shape on the behaviour of cationic dyeable poly(ethylene terephthalate) fibres

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