聚甲醛纤维的染色动力学研究
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摘要
选用分散染料分散红S-5BL对聚甲醛(POM)纤维和涤纶(PET纤维)进行染色,通过绘制上染速率曲线,计算出分散红染料在纤维上的扩散系数、染色速率常数及半染时间,比较了二者的染色动力学,并探讨了POM纤维结构与其染色性能的关系。结果表明:与PET纤维相比,在相同的染色温度下,POM纤维的扩散系数和染色速率常数较低,半染时间较大,扩散活化能较大;染色温度为80～95℃,POM纤维的上染量明显高于PET纤维,染色温度为100～110℃时,POM纤维和PET纤维的上染量接近;POM纤维的结晶度和取向度均较高,因而分散红染料分子进入POM纤维内部的能阻较大。
A disperse dyestuff, Disperse Red S-5 BL, was used to dye polyoxymethylene(POM) fibers and polyester(PET) fibers. The diffusivity, dyeing rate constant and half-dyeing time of disperse red dye on fibers were calculated according to the dyeing rate curve. The dyeing kinetics of the fibers were compared and the relationship between the structure and dyeing performance of POM fibers was also discussed. The results showed that as compared with PET fiber at the same dyeing temperature, POM fibers had lower diffusivity and dyeing rate constant, longer half-dyeing time, and higher diffusion activation energy; POM fiber exhibited the obviously higher dye up-take at the dyeing temperature of 80-95 ℃ and close dye up-take at the dyeing temperature of 100-110 ℃; and POM fiber had high crystallinity and degree of orientation, so it was extremely difficult for the molecules of disperse red dye to enter the interior of POM fiber.
A disperse dyestuff, Disperse Red S-5 BL, was used to dye polyoxymethylene(POM) fibers and polyester(PET) fibers. The diffusivity, dyeing rate constant and half-dyeing time of disperse red dye on fibers were calculated according to the dyeing rate curve. The dyeing kinetics of the fibers were compared and the relationship between the structure and dyeing performance of POM fibers was also discussed. The results showed that as compared with PET fiber at the same dyeing temperature, POM fibers had lower diffusivity and dyeing rate constant, longer half-dyeing time, and higher diffusion activation energy; POM fiber exhibited the obviously higher dye up-take at the dyeing temperature of 80-95 ℃ and close dye up-take at the dyeing temperature of 100-110 ℃; and POM fiber had high crystallinity and degree of orientation, so it was extremely difficult for the molecules of disperse red dye to enter the interior of POM fiber.
引文
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[12] Wang Pingyue, Ma Jinfeng. The kinetics of the dyeing and fading of coloured poly(ethylene-2,6-naphthalenedicarboxylate) fiber[J]. Dye Pigment, 1998,37(2):121-127.
[13] Rys P. The interaction of mass diffusion and chemical reaction during finishing and dyeing of textiles[J]. Text Res J, 1973,43(1):24-33.
[14] Ujhelyiova A, Bolhova E, Oravkinova J, et al. Kinetics of dyeing process of blend polypropylene/polyester fibres with disperse dye[J]. Dye Pigment, 2007, 72(2):212-216.
[15] Kim T K, Son Y A, Lim Y J. Thermodynamic parameters of disperse dyeing on several polyester fibers having different molecular structures[J]. Dye Pigment, 2005,67(3):229-234.
[2] 阳知乾,徐德根,叶光斗,等. POM纤维的产业化开发[J]. 合成纤维工业, 2016,39(5):6-9.
[3] 文珍稀. 聚甲醛纤维的制备与表征[D]. 上海:东华大学, 2011.
[4] 王亚涛. 聚甲醛的改性、加工及应用研究[D]. 北京:北京化工大学,2017.
[5] 尚娇娇, 兰建武, 王焕莲. 聚甲醛纤维的染色性能[J]. 印染, 2012,38(16):6-8.
[6] 刘治刚, 高艳, 金华, 等. XRD分峰法测定天然纤维素结晶度的研究[J]. 中国测试, 2015, 41(2):38-41.
[7] Bonart R, Hosemann R. Zur Analyse der Langperiodeninterferenzen[J]. Zeitschrift Für Elektrochemie Berichte Der Bunsengesellschaft Für Physikalische Chemie, 1960,64(2):314-321.
[8] Ujhelyiová A, Bolhová E,Oravkinová J, et al. Kinetics of the dyeing process of blend polypropylene/polyester fibres with disperse dyes[J]. Dye Pigment, 2007,72(2): 212-216.
[9] Eichenauer H, Lindner C, Ott K H. Graft polymers on rubber polymers with a block-like structure: US,4771109[P]. 1988-09-13.
[10] Bledzki A K, Mamun A A, Feldmann M. Polyoxymethylene composites with natural and cellulose fibres: Toughness and heat deflection temperature[J]. Comp Sci Tech, 2012, 72(15): 1870-1874.
[11] Feng Qingzheng, Zhang Yingwei, Sun Changjiang, et al. Development of POM wear-resistant and noise damping composite[J]. Eng Plast Appl, 2013, 41(7):21-25.
[12] Wang Pingyue, Ma Jinfeng. The kinetics of the dyeing and fading of coloured poly(ethylene-2,6-naphthalenedicarboxylate) fiber[J]. Dye Pigment, 1998,37(2):121-127.
[13] Rys P. The interaction of mass diffusion and chemical reaction during finishing and dyeing of textiles[J]. Text Res J, 1973,43(1):24-33.
[14] Ujhelyiova A, Bolhova E, Oravkinova J, et al. Kinetics of dyeing process of blend polypropylene/polyester fibres with disperse dye[J]. Dye Pigment, 2007, 72(2):212-216.
[15] Kim T K, Son Y A, Lim Y J. Thermodynamic parameters of disperse dyeing on several polyester fibers having different molecular structures[J]. Dye Pigment, 2005,67(3):229-234.