Effects of Some Surfactants as Stabilizers to Reduce the Phase Separation Rates of Blended Pastes for Warp Sizing

Abstract

Reducing the phase-separation rates of starch/PVA blend pastes for warp sizing by adding a small amount of surfactant as a stabilizer is investigated. The effects of reducing the separation rates or raising the stability of the blended pastes are evaluated in terms of initial demixing time and volume percentage of phase separation. Surfactants such as sodium dodecylsulfate, sodium dodecylsulfonate, Tween 20, and Span 20 are individually evaluated. The type and amount of the surfactant strongly affect the phase-separation rates or the paste stability. Sodium dodecylsufate and sodium dodecylsulfonate effectively retard phase separation and enhance paste stability, whereas Tween 20 and Span 20 do not. Increasing the amount of sodium dodecylsulfate favorably reduces the separation rates. Moreover, the effects of starch content and PVA type on the separation are also investigated.

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References

Athar, T. , Acrylic Size for Polyester Cotton Blends, Textile Res. J. 53(12), 791-792 (1983).

Brockway, C.E. , Efficiency and Frequency of Grafting of Methyl Methacrylate to Granular Corn Starch, J. Appl. Polym. Sci. Part A 2(8), 3721-3731 (1964 ).

Bruckmann, R., Schoepke, H., Wirth, T., et al., Alkyl (Meth)acrylate Copolymer Preparation and Use, European patent 450 437, 1991-10-9.

Coleman, M.M. , Serman, C.J. , Bhagwager , D.E. , and Painter, P.C. , A Practical Guide to Polymer Miscibility , Polymer 31(7), 1187-1203 (1990).

Gajdos, E. , Saceanu, E. , Rusescu, D. , et al., Manufacture of Thermosetting Acrylic Sizes for Volvair Textiles, RO 104 491, 1994-7-10.

Shen, G.L. , An Experiment on Sizing Compatibility, Cott. Textile Technol. 17(2), 21-23 (1989).

Thomas, H.L. , Brock, P.N. , Jr., and Moore , G.W. , Applying Surfactants/Salt Auxiliaries as Lubricating Agents in Warp Sizing, Am. Dyest. Rep. 86(8), 19-26 (1997).

Chen, X.C. , ''Technological Design of the Weaving Process," 2nd ed., Beijing: Textile Industry Press, 1991, pp. 309-312.

Zhu, Z.F. , Influence of Oxidation Extent of Starch on the Paste Compatibility of Oxidized-acetylated Cornstarch with PVA, Cott. Textile Technol. 28(2), 26-30 (2000).

10.

Zhu, Z.F. , Study on the Method for Evaluating the Separation Behavior of Polyvinyl Alcohol-Starch Pastes, J. China Textile Univ. Eng. Ed. (in press).

11.

Zhu, Z.F. , Li, Y.H. , Influence of Starch Variety on the Separation Behaviors of the Blended Pastes of Polyvinyl Alcohol with Starches, Cott. Textile Technol. 28(9), 24-27 (2000).

12.

Zhu, Z.F. , and Zhuo, R.X. , Degree of Substitution of the Ionized Starches and Their Adhesive Capacity to Polyester/Cotton Fibers, J. China Textile Univ. Eng. Ed. 14(1), 43-48 (1997).