Factorial Optimization of the Effects of Melt-Spinning Conditions on As-spun Aliphatic-Aromatic Copolyester Fibers I. Spin Draw Ratio, Overall Orientation and Drawability

Younes, Basel; Fotheringham, Alexander; El‐Dessouky, Hassan M.; Haddad, Ghassan

doi:10.1080/00914037.2010.531804

Cited by 9 publications

(6 citation statements)

References 31 publications

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“…Other effects appear from extrusion temperature and quench air speed, which could be related to the effect of these factors on the down draw ratio as has been noted in previous work. 44 Tenacity [Fig. 6(b)] is affected by extrusion temperature, winding speed, metering pump speed, and their interactions T and MPS, T and WS, and WS and MPS.…”

Section: Resultsmentioning

confidence: 99%

Factorial optimization of the effects of melt‐spinning conditions on biodegradable as‐spun aliphatic–aromatic copolyester fibers. III. Diameter, tensile properties, and thermal shrinkage

Younes

Fotheringham

2011

J of Applied Polymer Sci

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ABSTRACT:To model the melt-spinning process of biodegradable as-spun linear aliphatic-aromatic copolyester fibers, a fraction factorial experimental design and appropriate statistical analysis for the 32 screening trials involving five control parameters were used. Because of their central role in the production processes and end use textiles, it is important to simulate the mechanical and thermal shrinkage properties of AAC fibers. Concise statistical models of fiber behavior are based on factorial experimental design data. Process's data are collected, analyzed, and mathematical models created to predict the diameter, tenacity, elongation at break, modulus, and thermal shrinkage of the spun fiber in terms of random variables and their associated probability distributions. The theoretical regression models obtained form the main source code in the enhanced forecasting program, which presents the melt-spinning process of aromatic-aliphatic copolyester fibers. Factorial statistical approaches, based on over indicated region levels of meltspinning process parameters, are given in terms of assumptions and theory to produce biodegradable, environmentally friendly fibers for different applications.

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Section: Resultsmentioning

confidence: 99%

Factorial optimization of the effects of melt‐spinning conditions on biodegradable as‐spun aliphatic–aromatic copolyester fibers. III. Diameter, tensile properties, and thermal shrinkage

Younes

Fotheringham

2011

J of Applied Polymer Sci

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“…A specially designed spinneret of 30 holes (0.4 mm diameter, l/d=2) was used. Temperature profile and spinning conditions were selected based on statistical analysis and results of previous studies [38][39][40][41]. The temperature of feeding zone was kept above 100 o C to prevent any moisture from forming.…”

Section: Extrusion Of As-spun Fibre Sample By Melt Spinningmentioning

confidence: 99%

Statistical analysis of the effect of multi-stage hot drawing on the thermal shrinkage and crystallographic order of biodegradable aliphatic-aromatic co-polyester fibres

2011

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Using statistical experimental design, the effects of multi-stage hot drawing process on thermal shrinkage and crystallographic order of linear aliphatic-aromatic co-polyester fibres were statistically analyzed. Thermal shrinkage and fullwidth half-maximum (FWHM) of an X-ray scattering profile of the fibres have been quantitatively assessed, and the direction of increasing or decreasing the significant process parameters has been characterized. It has been found that the number of drawing stages, drawing temperature and relaxing stage ratio affect the shrinkage and crystallographic order together. Plate temperature and the interaction between drawing stages and drawing temperature or drawing ratio have an effect on thermal shrinkage; Spin finish application and relaxing temperature have an effect on crystallographic order. The data analysis has been characterized with regard to the relationship between the studied factors statistically analyzed and the scientific reasons suggested. Factorial statistical analysis simulates the combination of drawing process parameters and the selected as-spun environmentally friendly biodegradable fibre.

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“…A specially designed spinneret of 30 holes (0.4 mm diameter, L/D = 2) was used. Temperature profile and spinning conditions were selected based on statistical analysis and results of previous work [31][32][33][34]. The temperature of the feeding zone was adjusted to be ≥ 100 o C to prevent any moisture from forming.…”

Section: Extrusion Of As-spun Fiber Sample By Melt Spinningmentioning

confidence: 99%

A Statistical Analysis of the Influence of Multi-Stage Hot-Drawing on the Overall Orientation of Biodegradable Aliphatic-Aromatic Co-Polyester Fibers

Younes

Fotheringham

El‐Dessouky

et al. 2013

Journal of Engineered Fibers and Fabrics

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Biodegradable as-spun linear aliphatic-aromatic co-polyester (AAC) fibers were processed under a fractional factorial design as a function of hot-drawing conditions using appropriate experimental and statistical methodology. The multi-stage hot-drawing process and overall orientation of the biodegradable AAC fibers were characterized and statistically analyzed. The results obtained showed that the most effective and significant parameters influencing fiber overall orientation are the draw ratio and the drawing temperature. Birefringence is affected positively by draw ratio and plate temperature, and negatively by drawing temperature, the interaction between drawing stage and relaxation temperature, relaxation temperature and the interaction between draw ratio and spin finish. From results and analysis, a combination of factor levels was designed for controlling the birefringence of the material studied using the regression equations obtained. A new forecasting statistical model has been suggested for optimizing the drawing process effect. Such optimized (AAC) fibers could be used in agricultural, horticultural and other textile applications.

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Factorial Optimization of the Effects of Melt-Spinning Conditions on As-spun Aliphatic-Aromatic Copolyester Fibers I. Spin Draw Ratio, Overall Orientation and Drawability

Cited by 9 publications

References 31 publications

Factorial optimization of the effects of melt‐spinning conditions on biodegradable as‐spun aliphatic–aromatic copolyester fibers. III. Diameter, tensile properties, and thermal shrinkage

Factorial optimization of the effects of melt‐spinning conditions on biodegradable as‐spun aliphatic–aromatic copolyester fibers. III. Diameter, tensile properties, and thermal shrinkage

Statistical analysis of the effect of multi-stage hot drawing on the thermal shrinkage and crystallographic order of biodegradable aliphatic-aromatic co-polyester fibres

A Statistical Analysis of the Influence of Multi-Stage Hot-Drawing on the Overall Orientation of Biodegradable Aliphatic-Aromatic Co-Polyester Fibers

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