Abstract To investigate the influence of cross-linking/sulfonation on the viscosity stability, adhesion, film properties and desizability of corn starch for ameliorating its end-use ability in application of warp sizing, a series of itaconic acid cross-linked and sulfonated starch (IACLSS) samples with different levels of cross-linking (LCL) and degrees of substitution (DS) were synthesized by the cross-linking of acid-converted starch (ACS) with itaconic acid (IA) and subsequent sulfonation with NaHSO3. The apparent viscosity and viscosity stability were determined and adhesion was evaluated using a standardized method (FZ/T 15,001–2008). Film properties were also estimated in terms of tensile strength, breaking elongation, bending endurance, and moisture regain and the desizability of the IACLSS samples was investigated by measuring the time required to break the films in hot water. The experimental results showed that cross-linking/sulfonation was capable of improving the viscosity stability of cooked starch paste, enhancing the adhesion of starch to cotton and polyester fibers, increasing breaking elongation, bending endurance and moisture regain of starch film as well as decreasing its tensile strength, thereby stabilizing paste viscosity, ameliorating the adhesion to fibers and diminishing film brittleness. In addition, modification could reduce the time required to break the films in 80 °C water, indicating that modification favored the desizing of starch in hot water. Increasing sulfonation levels whilst decreasing the LCL values favored improvement in stability and desizability, enhancement in the adhesion to cotton and polyester fibers, and decrease in brittleness. The IACLSS showed potential in the applications of cotton and polyester sizing.

中文翻译：

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交联/磺化以改善用于经纱施胶的玉米淀粉的糊稳定性、粘附性和薄膜性能

摘要 研究交联/磺化对玉米淀粉的粘度稳定性、附着力、成膜性和退浆性的影响，以改善其在经纱施胶应用中的最终使用能力，一系列衣康酸交联磺化淀粉（ IACLSS) 样品通过酸转化淀粉 (ACS) 与衣康酸 (IA) 的交联和随后的 NaHSO3 磺化来合成具有不同交联水平 (LCL) 和取代度 (DS) 的样品。使用标准化方法 (FZ/T 15,001–2008) 测定表观粘度和粘度稳定性并评估附着力。还根据拉伸强度、断裂伸长率、弯曲耐久性、通过测量在热水中破膜所需的时间来研究 IACLSS 样品的回潮率和退浆性。实验结果表明，交联/磺化能够提高熟淀粉糊的粘度稳定性，增强淀粉对棉和涤纶纤维的附着力，提高淀粉膜的断裂伸长率、抗弯强度和回潮率，降低淀粉膜的回潮率。拉伸强度，从而稳定糊剂粘度，改善对纤维的附着力并减少薄膜脆性。此外，改性可以减少在 80°C 水中破膜所需的时间，表明改性有利于淀粉在热水中的退浆。增加磺化水平同时降低 LCL 值有利于提高稳定性和退浆性，增强对棉和聚酯纤维的附着力，并降低脆性。IACLSS 显示出在棉和涤纶上浆应用中的潜力。